@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700;800&family=Inter:wght@400;500;600;700;800&display=swap');

/* ══════════════════════════════════════════
   Backtest Analyzer v3.5 — sys-tre Design System v2 整合
   v3.4 (2026-05-08): 案 A token マッピング、 階層 1: visual 整合 base
   v3.5 (2026-05-08): 案 B Section + Card 構造 DS 整合、 階層 2: visual 全面 rewrite
                    末尾 cascade override で .sft-bt-* class 内 visual を DS spec 化
                    (section padding-block / dropzone shadow / summary-card stat 化 /
                     chart-card / mini-nav glass / sticky-bar glass / insight DS alert /
                     tables row pattern / verdict glow / WF score gradient + reduced-motion + dark)
   ══════════════════════════════════════════ */

/* ── sys-tre DS v2 token マッピング (= --sft-* を DS --ds-* 値で override) ── */
/* fx-tools-common.css の base 変数を上書きし、 LP / shop / EA カードと統一 */
.sft-bt-wrap {
    font-family: "Noto Sans JP", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* ─ Brand colors (sys-tre DS v2) ─ */
    --sft-primary: #FF7A3D;
    --sft-primary-light: #FF9A6D;
    --sft-primary-dark: #FF5100;
    --sft-blue: #3B82F6;
    --sft-cyan: #06B6D4;          /* DS accent */
    --sft-success: #16A34A;
    --sft-error: #EF4444;
    --sft-warning: #EAB308;
    --sft-gold: #FFD700;          /* DS gold (ranking 限定) */
    --sft-mint: #0F9D6A;          /* DS mint */

    /* ─ Surface / text ─ */
    --sft-text: #1E1810;          /* DS text-primary */
    --sft-text-sub: #575250;      /* DS sub */
    --sft-muted: #8C8480;
    --sft-bg: #FFFFFF;
    --sft-bg-card: #FFFFFF;
    --sft-bg-soft: #F8F6F3;
    --sft-border: rgba(30,24,16,0.08);

    /* ─ Backtest 専用 (DS hue で再定義) ─ */
    --sft-hover-bg: rgba(255,122,61,0.04);
    --sft-hover-bg-strong: rgba(255,122,61,0.08);
    --sft-shadow-sm: rgba(30,24,16,0.06);
    --sft-shadow-md: rgba(30,24,16,0.1);
    --sft-shadow-lg: rgba(30,24,16,0.15);
    --sft-success-bg-subtle: rgba(22,163,74,0.1);
    --sft-success-bg-faint: rgba(22,163,74,0.08);
    --sft-error-bg-subtle: rgba(239,68,68,0.1);
    --sft-error-bg-faint: rgba(239,68,68,0.08);
    --sft-heatmap-neg: rgba(239,68,68,0.6);
    --sft-heatmap-pos: rgba(22,163,74,0.6);
    --sft-focus-shadow: rgba(255,122,61,0.15);

    /* ─ DS radius scale (16-10-50) ─ */
    --sft-radius-card: 16px;
    --sft-radius-chip: 10px;
    --sft-radius-pill: 50px;
    --sft-radius-input: 10px;
}

/* ── Dark mode (DS dark 2 段) ── */
[data-sft-theme="dark"] .sft-bt-wrap,
.sft-bt-wrap[data-sft-theme="dark"] {
    --sft-text: #F0E8DD;
    --sft-text-sub: #B8AFA3;
    --sft-muted: #7E756B;
    --sft-bg: #0D0B09;
    --sft-bg-card: #1E1810;
    --sft-bg-soft: #2A1F18;
    --sft-border: rgba(240,232,221,0.08);
    --sft-shadow-sm: rgba(0,0,0,0.3);
    --sft-shadow-md: rgba(0,0,0,0.5);
    --sft-shadow-lg: rgba(0,0,0,0.7);
}

/* ── ドロップゾーン ── */
.sft-bt-dropzone {
    position: relative;
    border: none;
    border-radius: 20px;
    padding: 56px 32px 48px;
    text-align: center;
    cursor: pointer;
    background: var(--sft-bg-card);
    box-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s ease;
}
/* アニメーション虹グラデーションボーダー */
.sft-bt-dropzone::before {
    content: '';
    position: absolute; inset: 0;
    border-radius: 20px; padding: 2px;
    background: linear-gradient(135deg, var(--sft-primary), var(--sft-primary-light), #3b82f6, var(--sft-primary));
    background-size: 300% 300%;
    animation: sftBtBorderGlow 4s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}
/* ドットメッシュ背景 */
.sft-bt-dropzone::after {
    content: '';
    position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(255,122,61,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    border-radius: 20px;
    pointer-events: none;
}
@keyframes sftBtBorderGlow {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.sft-bt-dropzone:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(255,122,61,0.12), 0 2px 8px rgba(0,0,0,0.06);
}
.sft-bt-dropzone.is-dragover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 12px 40px rgba(255,122,61,0.18);
}
/* アイコン: フローティングアニメ + グラスモーフィック円 */
.sft-bt-dropzone-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 72px; height: 72px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,122,61,0.1), rgba(255,122,61,0.05));
    border: 1px solid rgba(255,122,61,0.15);
    color: var(--sft-primary, #FF7A3D);
    margin-bottom: 20px;
    position: relative; z-index: 1;
    animation: sftBtIconFloat 3s ease-in-out infinite;
}
@keyframes sftBtIconFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-6px); }
}
.sft-bt-dropzone.is-dragover .sft-bt-dropzone-icon {
    animation: sftBtIconPulse 0.6s ease infinite;
    background: linear-gradient(135deg, rgba(255,122,61,0.2), rgba(255,122,61,0.1));
}
@keyframes sftBtIconPulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.1); }
}
/* テキスト + プライバシーバッジ */
.sft-bt-dropzone-text {
    font-size: 17px; font-weight: 700; margin: 0 0 8px;
    color: var(--sft-text); position: relative; z-index: 1;
}
.sft-bt-dropzone-sub {
    font-size: 13px; color: var(--sft-text-muted, #8a8785);
    margin: 0 0 16px; position: relative; z-index: 1;
}
.sft-bt-dropzone-privacy {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 11px; color: var(--sft-text-muted); margin: 0;
    padding: 4px 12px;
    background: rgba(34,197,94,0.06);
    border: 1px solid rgba(34,197,94,0.12);
    border-radius: 20px;
    position: relative; z-index: 1;
}
/* フォーマットバッジ */
.sft-bt-dropzone-formats {
    display: flex; gap: 8px; justify-content: center;
    margin-bottom: 16px; position: relative; z-index: 1;
}
.sft-bt-format-badge {
    font-size: 11px; font-weight: 600; padding: 3px 10px;
    border-radius: 6px;
    background: var(--sft-primary-bg, #FFF5F0);
    color: var(--sft-primary, #FF7A3D);
    border: 1px solid rgba(255,122,61,0.2);
}
/* ダークモード: ドロップゾーン */

/* ── Feature Preview ── */
@keyframes sftFadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.sft-bt-preview {
    margin-top: 32px;
    animation: sftFadeInUp 0.6s ease;
}
.sft-bt-preview-title {
    font-size: 14px; font-weight: 700; text-align: center;
    color: var(--sft-text-muted, #8a8785); margin: 0 0 16px;
    letter-spacing: 0.02em;
}
.sft-bt-preview-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.sft-bt-preview-card {
    position: relative;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 16px;
    padding: 24px 20px 20px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.sft-bt-preview-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    border-radius: 16px 16px 0 0;
}
.sft-bt-preview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.sft-bt-preview-card--metrics::before { background: linear-gradient(90deg, #FF7A3D, #ff9a6c); }
.sft-bt-preview-card--chart::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.sft-bt-preview-card--sim::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.sft-bt-preview-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: 12px;
    margin-bottom: 14px;
}
.sft-bt-preview-icon--metrics { background: rgba(255,122,61,0.1); color: #FF7A3D; }
.sft-bt-preview-icon--chart { background: rgba(34,197,94,0.1); color: #22c55e; }
.sft-bt-preview-icon--sim { background: rgba(59,130,246,0.1); color: #3b82f6; }
.sft-bt-preview-card h4 {
    font-size: 14px; font-weight: 700; margin: 0 0 6px;
    color: var(--sft-text, #1f2937);
}
.sft-bt-preview-card p {
    font-size: 12px; color: var(--sft-text-muted, #8a8785);
    margin: 0 0 14px; line-height: 1.5;
}
/* サンプル指標ミニカード */
.sft-bt-preview-sample {
    display: flex; gap: 8px;
}
.sft-bt-preview-sample-item {
    flex: 1; text-align: center;
    padding: 8px 4px;
    background: var(--sft-bg-card, #fff);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 8px;
}
.sft-bt-preview-sample-label {
    font-size: 10px; color: var(--sft-text-muted, #8a8785);
    margin: 0 0 2px; font-weight: 500;
}
.sft-bt-preview-sample-value {
    font-size: 15px; font-weight: 800; margin: 0;
    color: var(--sft-text, #1f2937);
}
/* SVGミニチャート */
.sft-bt-preview-mini-chart {
    width: 100%; height: 60px;
}
.sft-bt-preview-mini-chart svg { width: 100%; height: 100%; }
/* タグ群 */
.sft-bt-preview-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
}
.sft-bt-preview-tag {
    font-size: 11px; font-weight: 600;
    padding: 4px 10px; border-radius: 20px;
    background: rgba(59,130,246,0.08);
    color: #3b82f6;
    border: 1px solid rgba(59,130,246,0.15);
}
/* ダークモード: Preview */
/* レスポンシブ: Preview */
@media (max-width: 700px) {
    .sft-bt-preview-grid { grid-template-columns: 1fr; }
}

/* ── 使い方ガイド ── */
.sft-bt-guide {
    margin-top: 32px;
    animation: sftFadeInUp 0.6s ease 0.2s both;
}
/* ステップガイド */
.sft-bt-steps {
    display: flex; align-items: flex-start; justify-content: center;
    gap: 0; margin-bottom: 24px;
}
.sft-bt-step {
    display: flex; align-items: flex-start; gap: 12px;
    flex: 1; max-width: 260px;
}
.sft-bt-step-num {
    width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 800;
    background: linear-gradient(135deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
    color: #fff;
}
.sft-bt-step-body h4 {
    font-size: 13px; font-weight: 700; margin: 0 0 4px;
    color: var(--sft-text, #1f2937);
}
.sft-bt-step-body p {
    font-size: 12px; color: var(--sft-text-muted, #8a8785);
    margin: 0; line-height: 1.5;
}
.sft-bt-step-arrow {
    display: flex; align-items: center; padding-top: 6px;
    color: var(--sft-border, #d1d5db); flex-shrink: 0;
}
@media (max-width: 700px) {
    .sft-bt-steps { flex-direction: column; align-items: stretch; gap: 12px; }
    .sft-bt-step { max-width: none; }
    .sft-bt-step-arrow { transform: rotate(90deg); justify-content: center; }
}
/* エクスポートガイド & FAQ — 共通 details スタイル */
.sft-bt-export-guide,
.sft-bt-faq {
    margin-bottom: 12px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 12px;
    overflow: hidden;
}
.sft-bt-export-guide > summary,
.sft-bt-faq > summary {
    padding: 12px 16px;
    font-size: 13px; font-weight: 700;
    color: var(--sft-text, #1f2937);
    cursor: pointer;
    background: var(--sft-card-bg, #f9fafb);
    list-style: none;
    display: flex; align-items: center; gap: 8px;
    -webkit-appearance: none;
    transition: background 0.15s;
}
.sft-bt-export-guide > summary:hover,
.sft-bt-faq > summary:hover {
    background: var(--sft-hover-bg);
}
.sft-bt-export-guide > summary::-webkit-details-marker,
.sft-bt-faq > summary::-webkit-details-marker { display: none; }
.sft-bt-export-guide > summary::marker,
.sft-bt-faq > summary::marker { content: ''; }
.sft-bt-export-guide > summary::before,
.sft-bt-faq > summary::before {
    content: '▸'; font-size: 12px; transition: transform 0.2s;
    color: var(--sft-primary, #FF7A3D);
}
.sft-bt-export-guide[open] > summary::before,
.sft-bt-faq[open] > summary::before {
    transform: rotate(90deg);
}
/* エクスポートガイド内容 */
.sft-bt-export-guide-content { padding: 16px; }
.sft-bt-export-guide-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
@media (max-width: 600px) {
    .sft-bt-export-guide-grid { grid-template-columns: 1fr; }
}
.sft-bt-export-guide-card {
    padding: 16px;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 10px;
}
.sft-bt-export-guide-card h5 {
    font-size: 14px; font-weight: 700; margin: 0 0 12px;
    display: flex; align-items: center; gap: 8px;
    color: var(--sft-text, #1f2937);
}
.sft-bt-export-guide-card ol {
    margin: 0; padding-left: 20px;
    font-size: 12px; line-height: 1.8;
    color: var(--sft-text, #1f2937);
}
/* FAQ内容 */
.sft-bt-faq-content { padding: 16px; }
.sft-bt-faq-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--sft-border, #e5e7eb);
}
.sft-bt-faq-item:last-child { border-bottom: none; padding-bottom: 0; }
.sft-bt-faq-item:first-child { padding-top: 0; }
.sft-bt-faq-item h5 {
    font-size: 13px; font-weight: 700; margin: 0 0 6px;
    color: var(--sft-text, #1f2937);
}
.sft-bt-faq-item p {
    font-size: 12px; margin: 0; line-height: 1.6;
    color: var(--sft-text-muted, #8a8785);
}

/* ── ローディング ── */
.sft-bt-loading {
    display: flex; align-items: center; justify-content: center;
    gap: 10px; padding: 32px; color: var(--sft-muted, #9ca3af); font-size: 14px;
}
.sft-bt-spinner {
    width: 20px; height: 20px; border: 2px solid var(--sft-border, #e5e7eb);
    border-top-color: var(--sft-primary, #FF7A3D); border-radius: 50%;
    animation: sft-bt-spin 0.6s linear infinite;
}
@keyframes sft-bt-spin { to { transform: rotate(360deg); } }

/* ── ファイル管理バー ── */
.sft-bt-file-bar {
    display: flex; align-items: center; gap: 8px;
    flex-wrap: wrap; margin-bottom: 16px;
}
.sft-bt-file-list { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.sft-bt-file-actions { display: flex; gap: 6px; align-items: center; }
.sft-bt-file-chip {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px; font-size: 12px;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 20px;
}
.sft-bt-file-chip.is-active { border-color: var(--sft-primary, #FF7A3D); background: var(--sft-hover-bg-strong); }
.sft-bt-file-remove {
    background: none; border: none; cursor: pointer; font-size: 14px;
    line-height: 1; color: var(--sft-muted, #9ca3af); padding: 4px;
    min-width: 28px; min-height: 28px;
    display: inline-flex; align-items: center; justify-content: center;
}
.sft-bt-file-remove:hover { color: var(--sft-error, #ef4444); }
.sft-bt-add-btn {
    font-size: 12px; padding: 4px 12px;
    border: 1px dashed var(--sft-border, #d1d5db);
    border-radius: 20px; background: none; cursor: pointer;
    color: var(--sft-muted, #9ca3af); transition: border-color 0.2s, color 0.2s;
}
.sft-bt-add-btn:hover { border-color: var(--sft-primary, #FF7A3D); color: var(--sft-primary, #FF7A3D); }

.sft-bt-copy-summary-btn {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 12px; padding: 4px 10px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 20px; background: none; cursor: pointer;
    color: var(--sft-muted, #9ca3af); transition: all 0.2s;
}
.sft-bt-copy-summary-btn:hover { border-color: var(--sft-primary, #FF7A3D); color: var(--sft-primary, #FF7A3D); }
.sft-bt-copy-summary-btn.is-copied { border-color: var(--sft-success, #22c55e); color: var(--sft-success, #22c55e); }

/* ── EA選択タブ ── */
.sft-bt-ea-tabs { margin-bottom: 12px; }

/* ── Section Layout (v3.0 vertical scroll) ── */
.sft-bt-section {
    margin-bottom: 48px;
    scroll-margin-top: 80px;
}
.sft-bt-section-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: var(--sft-text, #0f172a);
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--sft-border, #e2e8f0);
    letter-spacing: -0.02em;
}
.sft-bt-section-heading::before,
.sft-bt-section-heading::after {
    content: none !important;
    display: none !important;
}
.sft-bt-sh-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(255,122,61,0.1), rgba(255,122,61,0.05));
    color: var(--sft-primary, #FF7A3D);
    flex-shrink: 0;
}
.sft-bt-sh-icon svg {
    width: 18px;
    height: 18px;
}

/* ── Mini-nav (sticky left dots) ── */
.sft-bt-mini-nav {
    position: fixed;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 12px 8px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.sft-bt-mn-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--sft-border, #d1d5db);
    transition: all 0.25s;
    position: relative;
    text-decoration: none;
}
.sft-bt-mn-dot.active {
    background: var(--sft-primary, #FF7A3D);
    transform: scale(1.3);
    box-shadow: 0 0 8px rgba(255,122,61,0.4);
}
.sft-bt-mn-dot::after {
    content: attr(data-label);
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--sft-text, #1f2937);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
.sft-bt-mn-dot:hover::after {
    opacity: 1;
}
/* Hide mini-nav on mobile / narrow screens */
@media (max-width: 1100px) {
    .sft-bt-mini-nav { display: none; }
}

/* ── Section-based member gate ── */
.sft-bt-gated {
    position: relative;
    overflow: hidden;
}
.sft-bt-gated > *:not(.sft-bt-gate-overlay):not(.sft-bt-section-heading) {
    filter: blur(6px);
    pointer-events: none;
    user-select: none;
}
.sft-bt-gate-overlay {
    position: absolute;
    inset: 60px 0 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    background: rgba(255,255,255,0.5);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    border-radius: 16px;
}
.sft-bt-gate-overlay-content {
    text-align: center;
    padding: 32px;
}
.sft-bt-gate-overlay-content svg {
    color: var(--sft-primary, #FF7A3D);
    margin-bottom: 12px;
}
.sft-bt-gate-overlay-content p {
    font-size: 16px;
    font-weight: 700;
    color: var(--sft-text, #1f2937);
    margin: 0 0 16px;
}
.sft-bt-gate-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.25s;
    border: none;
    cursor: pointer;
}
.sft-bt-gate-btn--pri {
    background: linear-gradient(135deg, #FF7A3D, #FF9A5A);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255,122,61,0.3);
}
.sft-bt-gate-btn--pri:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,122,61,0.4);
    color: #fff;
}

/* ── Detail metrics grid ── */
.sft-bt-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}
.sft-bt-detail-card {
    background: var(--sft-card-bg, #f9fafb);
    border-radius: 14px;
    padding: 14px 16px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    text-align: center;
}
.sft-bt-detail-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--sft-muted, #9ca3af);
    margin: 0 0 4px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.sft-bt-detail-value {
    font-size: 16px;
    font-weight: 800;
    color: var(--sft-text, #1f2937);
    margin: 0;
}

/* ── サマリーカード ── */
.sft-bt-summary-grid {
    display: grid; grid-template-columns: repeat(6, 1fr);
    gap: 12px; margin-bottom: 16px;
}
.sft-bt-summary-card {
    position: relative;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 14px;
    padding: 18px 14px 16px; text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    animation: sftFadeInUp 0.4s ease both;
}
.sft-bt-summary-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
    opacity: 0.6;
    transition: opacity 0.2s ease;
}
.sft-bt-summary-card:hover::before { opacity: 1; }
.sft-bt-summary-card:nth-child(1) { animation-delay: 0s; }
.sft-bt-summary-card:nth-child(2) { animation-delay: 0.05s; }
.sft-bt-summary-card:nth-child(3) { animation-delay: 0.1s; }
.sft-bt-summary-card:nth-child(4) { animation-delay: 0.15s; }
.sft-bt-summary-card:nth-child(5) { animation-delay: 0.2s; }
.sft-bt-summary-card:nth-child(6) { animation-delay: 0.25s; }
.sft-bt-summary-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(255,122,61,0.08);
}
.sft-bt-summary-label { font-size: 11px; color: var(--sft-muted, #9ca3af); margin: 0 0 6px; font-weight: 500; }
.sft-bt-summary-value { font-size: 22px; font-weight: 800; margin: 0; color: var(--sft-text, #1f2937); letter-spacing: -0.02em; }
.sft-bt-summary-value.is-positive { color: var(--sft-success, #22c55e); }
.sft-bt-summary-value.is-negative { color: var(--sft-error, #ef4444); }
.sft-bt-summary-diff { font-size: 11px; font-weight: 400; margin-left: 4px; }
.sft-bt-summary-diff.is-positive { color: var(--sft-success, #22c55e); }
.sft-bt-summary-diff.is-negative { color: var(--sft-error, #ef4444); }

/* ── アコーディオン ── */
.sft-bt-accordion { margin-bottom: 12px; }
.sft-bt-accordion-toggle {
    display: flex; align-items: center; gap: 8px; width: 100%;
    padding: 8px 12px; border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: var(--sft-radius-md, 10px); background: var(--sft-card-bg, #f9fafb);
    cursor: pointer; font-size: 13px; font-weight: 600;
    color: var(--sft-text, #1f2937); transition: all 0.2s;
}
.sft-bt-accordion-toggle:hover { border-color: var(--sft-primary, #FF7A3D); }
.sft-bt-accordion-toggle:focus-visible {
    outline: 2px solid var(--sft-primary, #FF7A3D); outline-offset: -2px;
}
.sft-bt-accordion-toggle[aria-expanded="true"] .sft-bt-chevron { transform: rotate(180deg); }
.sft-bt-accordion-toggle .sft-bt-chevron { margin-left: auto; transition: transform 0.2s; }
/* 滑らかなアコーディオン開閉 */
.sft-bt-accordion-panel {
    overflow: hidden; transition: max-height 0.3s ease, opacity 0.2s ease;
    max-height: 0; opacity: 0; padding-top: 0;
}
.sft-bt-accordion-panel.is-open {
    max-height: 500px; opacity: 1; padding-top: 12px;
}

/* ── チャート2カラム ── */
.sft-bt-chart-row {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 16px; margin-bottom: 16px;
}
.sft-bt-chart-col { margin-bottom: 0 !important; }
.sft-bt-chart-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ── ピル型ボタン（汎用） ── */
.sft-bt-pill {
    padding: 6px 14px; font-size: 12px; font-weight: 600;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 20px; background: none; cursor: pointer;
    color: var(--sft-muted, #9ca3af); transition: all 0.2s;
}
.sft-bt-pill:hover { border-color: var(--sft-primary, #FF7A3D); color: var(--sft-primary, #FF7A3D); }
.sft-bt-pill:focus-visible {
    outline: 2px solid var(--sft-primary, #FF7A3D); outline-offset: 1px;
}
.sft-bt-pill.active {
    background: var(--sft-primary, #FF7A3D);
    border-color: var(--sft-primary, #FF7A3D);
    color: #fff;
}

/* ── 比較アコーディオン ── */
#sft-bt-compare-accordion .sft-bt-accordion-panel.is-open { max-height: 3000px; }
.sft-bt-compare-badge { font-size: 11px; font-weight: 400; color: var(--sft-muted, #9ca3af); margin-left: 4px; }

/* ── focus-visible 共通 ── */
.sft-bt-inline-select:focus-visible,
.sft-bt-add-btn:focus-visible,
.sft-bt-file-remove:focus-visible,
.sft-bt-filter-reset:focus-visible,
.sft-bt-export-menu button:focus-visible,
.sft-bt-mc-run:focus-visible,
.sft-bt-copy-summary-btn:focus-visible,
.sft-bt-trade-search:focus-visible {
    outline: 2px solid var(--sft-primary, #FF7A3D); outline-offset: 2px;
}

/* ── 比較グループヘッダー ── */
.sft-bt-group-header:hover { background: var(--sft-hover-bg) !important; }
.sft-bt-group-header td { user-select: none; }

/* ── コピーボタン disabled ── */
.sft-bt-copy-summary-btn:disabled {
    opacity: 0.5; cursor: not-allowed; pointer-events: none;
}

/* ── インラインセレクト ── */
.sft-bt-inline-select {
    padding: 2px 8px; font-size: 12px; font-weight: 600;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 6px; background: var(--sft-card-bg, #f9fafb);
    color: var(--sft-text, #1f2937); cursor: pointer;
    margin-left: 8px;
}

/* ── What-If フィルタバー ── */
.sft-bt-filter-bar {
    display: flex; flex-wrap: wrap; gap: 12px;
    padding: 16px; margin-bottom: 16px;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: var(--sft-radius-md, 10px);
}
.sft-bt-filter-group { display: flex; flex-direction: column; gap: 4px; min-width: 120px; }
.sft-bt-filter-group label { font-size: 11px; font-weight: 600; color: var(--sft-muted, #9ca3af); }
.sft-bt-range-wrap { display: flex; align-items: center; gap: 4px; }
.sft-bt-range { width: 80px; accent-color: var(--sft-primary, #FF7A3D); }
.sft-bt-weekday-toggles, .sft-bt-dir-toggles { display: flex; gap: 2px; }
.sft-bt-toggle {
    padding: 3px 8px; font-size: 11px; font-weight: 600;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 4px; background: none; cursor: pointer;
    color: var(--sft-muted, #9ca3af); transition: all 0.15s;
}
.sft-bt-toggle:focus-visible { outline: 2px solid var(--sft-primary, #FF7A3D); outline-offset: 1px; }
.sft-bt-toggle.active {
    background: var(--sft-primary, #FF7A3D);
    border-color: var(--sft-primary, #FF7A3D);
    color: #fff;
}
.sft-bt-input-sm {
    width: 80px; padding: 3px 6px; font-size: 12px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 4px; background: var(--sft-card-bg, #f9fafb);
    color: var(--sft-text, #1f2937);
}
.sft-bt-input-sm:focus {
    outline: none; border-color: var(--sft-primary, #FF7A3D);
    box-shadow: 0 0 0 2px var(--sft-focus-shadow);
}
.sft-bt-lot-range, .sft-bt-date-range, .sft-bt-outlier-range {
    display: flex; align-items: center; gap: 4px;
}
.sft-bt-filter-actions { display: flex; align-items: flex-end; gap: 8px; }
.sft-bt-filter-reset {
    padding: 4px 12px; font-size: 12px; font-weight: 600;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 6px; background: none; cursor: pointer;
    color: var(--sft-muted, #9ca3af); transition: all 0.2s;
}
.sft-bt-filter-reset:hover { border-color: var(--sft-error, #ef4444); color: var(--sft-error, #ef4444); }
.sft-bt-filter-badge {
    font-size: 12px; font-weight: 600;
    color: var(--sft-primary, #FF7A3D);
}

/* ── モンテカルロ ── */
.sft-bt-mc-controls {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 16px; flex-wrap: wrap;
}
.sft-bt-mc-controls label { font-size: 13px; font-weight: 600; }
.sft-bt-mc-run {
    padding: 6px 20px; font-size: 13px; font-weight: 700;
    background: var(--sft-primary, #FF7A3D); color: #fff;
    border: none; border-radius: 8px; cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}
.sft-bt-mc-run:hover { opacity: 0.85; }
.sft-bt-mc-run:active { transform: scale(0.97); }
.sft-bt-mc-run:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.sft-bt-mc-progress { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 200px; }
.sft-bt-mc-progress-bar {
    flex: 1; height: 6px; background: var(--sft-border, #e5e7eb);
    border-radius: 3px; overflow: hidden;
}
.sft-bt-mc-progress-fill {
    height: 100%; width: 0; background: var(--sft-primary, #FF7A3D);
    border-radius: 3px; transition: width 0.1s;
}
.sft-bt-mc-progress-text { font-size: 12px; font-weight: 600; color: var(--sft-muted, #9ca3af); }
.sft-bt-mc-hint {
    font-size: 12px; color: var(--sft-muted, #9ca3af); margin-bottom: 12px;
    line-height: 1.5;
}
.sft-bt-mc-summary {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px; margin-bottom: 16px;
}
.sft-bt-mc-stat {
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: var(--sft-radius-md, 10px);
    padding: 12px; text-align: center;
}
.sft-bt-mc-stat-label { font-size: 11px; color: var(--sft-muted, #9ca3af); margin: 0 0 4px; }
.sft-bt-mc-stat-value { font-size: 18px; font-weight: 700; margin: 0; }

/* ── 比較テーブル ── */
.sft-bt-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sft-bt-compare-table th,
.sft-bt-compare-table td { white-space: nowrap; padding: 8px 12px; }
.sft-bt-compare-best { background: var(--sft-success-bg-subtle); font-weight: 700; }

/* ── ヒートマップ ── */
.sft-bt-heatmap-wrap { overflow-x: auto; }
.sft-bt-heatmap {
    border-collapse: collapse; width: 100%; font-size: 11px;
}
.sft-bt-heatmap th, .sft-bt-heatmap td {
    padding: 4px 6px; text-align: center; border: 1px solid var(--sft-border, #e5e7eb);
    white-space: nowrap;
}
.sft-bt-heatmap th { font-weight: 600; background: var(--sft-card-bg, #f9fafb); }
.sft-bt-heatmap-legend {
    display: flex; align-items: center; gap: 4px;
    font-size: 10px; color: var(--sft-muted, #9ca3af);
    margin-top: 6px; justify-content: flex-end;
}
.sft-bt-heatmap-legend-bar {
    width: 80px; height: 8px; border-radius: 4px;
    background: linear-gradient(to right, var(--sft-heatmap-neg), transparent, var(--sft-heatmap-pos));
}

/* ── 時間分析テーブル ── */
.sft-bt-time-table {
    width: 100%; border-collapse: collapse; font-size: 12px; margin-bottom: 16px;
}
.sft-bt-time-table th, .sft-bt-time-table td {
    padding: 6px 10px; border-bottom: 1px solid var(--sft-border, #e5e7eb);
    text-align: right;
}
.sft-bt-time-table th { font-weight: 600; text-align: right; background: var(--sft-card-bg, #f9fafb); }
.sft-bt-time-table th:first-child, .sft-bt-time-table td:first-child { text-align: left; }
.sft-bt-time-row-best { background: var(--sft-success-bg-faint); }
.sft-bt-time-row-worst { background: var(--sft-error-bg-faint); }

/* ── 取引テーブル ── */
.sft-bt-trades-controls {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 12px; flex-wrap: wrap;
}
.sft-bt-trades-count { font-size: 12px; color: var(--sft-muted, #9ca3af); }
.sft-bt-trade-table { font-size: 12px; }
.sft-bt-trade-table th, .sft-bt-trade-table td { padding: 6px 8px; white-space: nowrap; }
.sft-bt-trade-table .is-buy { color: var(--sft-blue, #3b82f6); }
.sft-bt-trade-table .is-sell { color: var(--sft-error, #ef4444); }
.sft-bt-trade-table .is-profit, .sft-bt-period-table .is-profit { color: var(--sft-success, #22c55e); }
.sft-bt-trade-table .is-loss, .sft-bt-period-table .is-loss { color: var(--sft-error, #ef4444); }
/* ホバーでzebra stripe */
.sft-bt-trade-table tbody tr:hover { background: var(--sft-hover-bg); }

/* ── ソート可能ヘッダー ── */
.sft-bt-sortable { cursor: pointer; user-select: none; position: relative; }
.sft-bt-sortable:hover { color: var(--sft-primary, #FF7A3D); }
.sft-bt-sortable::after {
    content: '⇅'; display: inline-block; margin-left: 4px;
    font-size: 10px; opacity: 0.3;
}
.sft-bt-sortable.sort-asc::after { content: '▲'; opacity: 1; color: var(--sft-primary, #FF7A3D); }
.sft-bt-sortable.sort-desc::after { content: '▼'; opacity: 1; color: var(--sft-primary, #FF7A3D); }

/* ── エクスポートドロップダウン ── */
.sft-bt-export-dropdown { position: relative; }
.sft-bt-export-menu {
    position: absolute; top: 100%; right: 0; left: auto; z-index: 10;
    min-width: 180px; margin-top: 4px;
    background: var(--sft-card-bg, #fff);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 8px; box-shadow: 0 4px 16px var(--sft-shadow-md);
    overflow: hidden;
}
.sft-bt-export-menu button {
    display: block; width: 100%; padding: 8px 14px;
    font-size: 12px; text-align: left; border: none;
    background: none; cursor: pointer;
    color: var(--sft-text, #1f2937); transition: background 0.15s;
}
.sft-bt-export-menu button:hover { background: var(--sft-hover-bg-strong); }

/* ── ページネーション ── */
.sft-bt-pagination {
    display: flex; justify-content: center;
    gap: 4px; margin-top: 12px; flex-wrap: wrap;
}
.sft-bt-page-btn {
    min-width: 32px; height: 32px; padding: 0 8px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: var(--sft-radius-sm, 6px);
    background: none; cursor: pointer; font-size: 13px;
    color: var(--sft-text, #1f2937);
    transition: background 0.15s, border-color 0.15s;
}
.sft-bt-page-btn:hover { border-color: var(--sft-primary, #FF7A3D); }
.sft-bt-page-btn:focus-visible {
    outline: 2px solid var(--sft-primary, #FF7A3D); outline-offset: 1px;
}
.sft-bt-page-btn.is-active {
    background: var(--sft-primary, #FF7A3D);
    border-color: var(--sft-primary, #FF7A3D);
    color: #fff;
}

/* ── What-If サマリー ── */
.sft-bt-whatif-summary .sft-bt-summary-card { position: relative; }

/* ── トースト通知 ── */
.sft-bt-toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
    padding: 10px 20px; border-radius: 8px; font-size: 13px; font-weight: 600;
    background: var(--sft-text, #1f2937); color: #fff;
    box-shadow: 0 4px 16px var(--sft-shadow-lg);
    z-index: 9999; opacity: 0; transition: opacity 0.3s;
    pointer-events: none;
}
.sft-bt-toast.is-visible { opacity: 1; }

/* ── チャート高さクラス ── */
.sft-bt-chart-h-lg { height: 320px; }
.sft-bt-chart-h-md { height: 260px; }
.sft-bt-chart-h-sm { height: 200px; }

/* ── ツールチップ ── */
.sft-bt-tooltip-trigger {
    display: inline-flex; align-items: center; gap: 3px; cursor: help;
}
.sft-bt-tooltip-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 14px; height: 14px; border-radius: 50%;
    background: var(--sft-border, #e5e7eb); color: var(--sft-muted, #9ca3af);
    font-size: 9px; font-weight: 700; line-height: 1; flex-shrink: 0;
}
[data-tooltip] { position: relative; }
[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute; bottom: calc(100% + 6px); left: 50%;
    transform: translateX(-50%);
    padding: 6px 10px; border-radius: 6px;
    background: var(--sft-text, #1f2937); color: #fff;
    font-size: 11px; font-weight: 400; line-height: 1.4;
    max-width: 280px; white-space: normal;
    z-index: 20; pointer-events: none;
    box-shadow: 0 2px 8px var(--sft-shadow-sm);
}

/* ── トレード検索 ── */
.sft-bt-trade-search {
    padding: 4px 10px; font-size: 12px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 6px; background: var(--sft-card-bg, #f9fafb);
    color: var(--sft-text, #1f2937); width: 160px;
}
.sft-bt-trade-search:focus {
    outline: none; border-color: var(--sft-primary, #FF7A3D);
    box-shadow: 0 0 0 2px var(--sft-focus-shadow);
}

/* ── 空状態メッセージ ── */
.sft-bt-empty-state {
    text-align: center; padding: 48px 24px;
    color: var(--sft-muted, #9ca3af); font-size: 14px;
}
.sft-bt-empty-state svg { margin-bottom: 12px; opacity: 0.5; }

/* ── レスポンシブ ── */
@media (max-width: 900px) {
    .sft-bt-summary-grid { grid-template-columns: repeat(3, 1fr); }
    .sft-bt-chart-row, .sft-bt-chart-grid { grid-template-columns: 1fr; }
    .sft-bt-filter-bar { flex-direction: column; }
}
@media (max-width: 600px) {
    .sft-bt-summary-grid { grid-template-columns: repeat(2, 1fr); }
    .sft-bt-dropzone { padding: 36px 16px 32px; }
    .sft-bt-summary-value { font-size: 16px; }
    .sft-bt-mc-summary { grid-template-columns: repeat(2, 1fr); }
    .sft-bt-filter-group { min-width: 100%; }
    .sft-bt-toggle { min-height: 44px; padding: 6px 10px; }
    .sft-bt-page-btn { min-width: 44px; height: 44px; }
    .sft-bt-file-remove { min-width: 36px; min-height: 36px; }
    .sft-bt-chart-h-lg { height: 220px; }
    .sft-bt-chart-h-md { height: 180px; }
    .sft-bt-detail-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 400px) {
    .sft-bt-summary-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .sft-bt-summary-value { font-size: 14px; }
    .sft-bt-summary-label { font-size: 10px; }
    .sft-bt-chart-h-lg { height: 200px; }
    .sft-bt-chart-h-md { height: 160px; }
    .sft-bt-pill { padding: 5px 10px; font-size: 11px; }
    .sft-bt-input-sm { width: 60px; }
    .sft-bt-filter-group { min-width: 100%; }
    .sft-bt-toggle { min-height: 36px; }
    .sft-bt-page-btn { min-width: 36px; height: 36px; }
    .sft-bt-mc-summary { grid-template-columns: 1fr; }
    .sft-bt-trade-search { width: 100%; }
    .sft-bt-detail-grid { grid-template-columns: 1fr; }
}

/* ── Sticky bar ダークモード ── */

/* ── アコーディオントグルポリッシュ ── */
.sft-bt-accordion-toggle {
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.sft-bt-accordion-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(255,122,61,0.08);
}

/* ── インサイトセクションポリッシュ ── */
.sft-bt-insights {
    padding: 20px;
    border-radius: 16px;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.sft-bt-insight-item {
    transition: transform 0.15s ease;
}
.sft-bt-insight-item:hover {
    transform: translateX(4px);
}

/* ── MC統計カードポリッシュ ── */
.sft-bt-mc-stat {
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.sft-bt-mc-stat::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
    opacity: 0.5;
}
.sft-bt-mc-stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

/* ── セクションタイトル装飾 ── */
.sft-section-title {
    display: flex; align-items: center; gap: 8px;
}
.sft-bt-wrap .sft-section-title::before {
    content: '';
    display: inline-block;
    width: 3px; height: 16px;
    background: linear-gradient(180deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
    border-radius: 2px;
    flex-shrink: 0;
}

/* ── Sticky テーブルヘッダー ── */
.sft-bt-trade-table thead th,
.sft-bt-compare-table thead th {
    position: sticky; top: 0; z-index: 2;
    background: var(--sft-card-bg, #f9fafb);
}

/* ── Skeleton ローディング ── */
.sft-bt-skeleton {
    background: linear-gradient(90deg, var(--sft-border, #e5e7eb) 25%, var(--sft-card-bg, #f0f0f0) 50%, var(--sft-border, #e5e7eb) 75%);
    background-size: 200% 100%;
    animation: sft-bt-skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: var(--sft-radius-md, 10px);
}
.sft-bt-skeleton-card {
    height: 72px;
    border: 1px solid var(--sft-border, #e5e7eb);
    border-radius: var(--sft-radius-md, 10px);
}
@keyframes sft-bt-skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Sticky サマリーバー ── */
.sft-bt-sticky-bar {
    position: sticky; top: 0; z-index: 5;
    display: flex; align-items: center; gap: 16px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sft-border, #e5e7eb);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 2px 8px var(--sft-shadow-sm);
    font-size: 13px; font-weight: 600;
    flex-wrap: wrap;
}
.sft-bt-sticky-metric { display: flex; align-items: center; gap: 4px; }
.sft-bt-sticky-label { color: var(--sft-muted, #9ca3af); font-size: 11px; font-weight: 500; }
.sft-bt-sticky-value { font-size: 14px; font-weight: 700; }

/* ── スマートインサイト ── */
.sft-bt-insights { margin-bottom: 16px; }
.sft-bt-insights-title {
    font-size: 14px; font-weight: 700; margin: 0 0 10px;
    color: var(--sft-text, #1f2937);
}
.sft-bt-insight-list { display: flex; flex-direction: column; gap: 8px; }
.sft-bt-insight-item {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 10px 14px;
    background: var(--sft-card-bg, #f9fafb);
    border: 1px solid var(--sft-border, #e5e7eb);
    border-left: 3px solid var(--sft-primary, #FF7A3D);
    border-radius: var(--sft-radius-md, 10px);
    font-size: 13px; line-height: 1.5;
}
.sft-bt-insight-item.is-positive { border-left-color: var(--sft-success, #22c55e); }
.sft-bt-insight-item.is-negative { border-left-color: var(--sft-error, #ef4444); }
.sft-bt-insight-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.sft-bt-insight-text { flex: 1; }
.sft-bt-insight-label { font-weight: 700; margin-right: 6px; }

/* ── Quick Filter リンク ── */
.sft-bt-quick-filter {
    color: var(--sft-primary, #FF7A3D);
    text-decoration: underline dashed;
    text-underline-offset: 2px;
    cursor: pointer; font-weight: 600;
}
.sft-bt-quick-filter:hover { text-decoration-style: solid; }

/* ── Undo ボタン ── */
.sft-bt-undo-btn {
    display: inline-block; margin-left: 12px;
    padding: 3px 10px; font-size: 12px; font-weight: 700;
    background: none; border: 1px solid #fff; border-radius: 4px;
    color: #fff; cursor: pointer; pointer-events: auto;
}
.sft-bt-undo-btn:hover { background: rgba(255,255,255,0.15); }

/* ── 期間別分析 ── */
.sft-bt-period-table {
    width: 100%; border-collapse: collapse; font-size: 12px; margin-bottom: 16px;
}
.sft-bt-period-table th, .sft-bt-period-table td {
    padding: 8px 10px; border-bottom: 1px solid var(--sft-border, #e5e7eb);
    text-align: right;
}
.sft-bt-period-table th { font-weight: 600; text-align: right; background: var(--sft-card-bg, #f9fafb); }
.sft-bt-period-table th:first-child, .sft-bt-period-table td:first-child { text-align: left; }
.sft-bt-period-warn { background: var(--sft-error-bg-faint); border-left: 3px solid var(--sft-error, #ef4444); }
.sft-bt-period-good { border-left: 3px solid var(--sft-success, #22c55e); }
.sft-bt-period-arrow { font-size: 11px; margin-left: 2px; }
.sft-bt-period-arrow.up { color: var(--sft-success, #22c55e); }
.sft-bt-period-arrow.down { color: var(--sft-error, #ef4444); }
.sft-bt-period-controls {
    display: flex; align-items: center; gap: 8px; margin-bottom: 12px;
}
.sft-bt-period-controls label { font-size: 12px; font-weight: 600; color: var(--sft-muted, #9ca3af); }
.sft-bt-period-alert {
    padding: 10px 14px; margin-top: 12px;
    font-size: 12px; line-height: 1.5;
    background: var(--sft-error-bg-faint);
    border: 1px solid rgba(239,68,68,0.2);
    border-left: 3px solid var(--sft-error, #ef4444);
    border-radius: 0 8px 8px 0;
    color: var(--sft-text, #1f2937);
}

/* ── Print ── */
@media print {
    .sft-bt-dropzone, .sft-bt-preview, .sft-bt-guide, .sft-bt-file-bar, .sft-bt-filter-bar,
    .sft-bt-mc-controls, .sft-bt-trades-controls, .sft-bt-pagination,
    .sft-bt-export-dropdown, .sft-bt-toast, .sft-bt-sticky-bar,
    .sft-bt-add-btn, .sft-bt-file-remove, .sft-bt-mini-nav { display: none !important; }
    .sft-bt-chart-row, .sft-bt-chart-grid { grid-template-columns: 1fr !important; }
    .sft-bt-summary-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .sft-bt-summary-card, .sft-bt-insight-item { page-break-inside: avoid; }
    .sft-bt-section { page-break-inside: avoid; margin-bottom: 24px; }
    .sft-bt-gated > * { filter: none !important; pointer-events: auto !important; user-select: auto !important; }
    .sft-bt-gate-overlay { display: none !important; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    .sft-bt-spinner, .sft-bt-skeleton { animation: none; }
    .sft-bt-preview { animation: none; }
    .sft-bt-accordion-panel, .sft-bt-summary-card, .sft-bt-toast,
    .sft-bt-mc-progress-fill, .sft-bt-chevron, .sft-bt-dropzone,
    .sft-bt-dropzone-icon, .sft-bt-preview-card, .sft-bt-insight-item,
    .sft-bt-mc-stat, .sft-bt-accordion-toggle, .sft-bt-mn-dot,
    .sft-bt-gate-btn { transition: none; }
    .sft-bt-dropzone::before, .sft-bt-dropzone-icon { animation: none; }
    .sft-bt-summary-card { animation: none; }
}

/* ═══════════════════════════════════════
   EA Verdict Score Card
   ═══════════════════════════════════════ */
.sft-bt-verdict { margin-bottom: 32px; }
.sft-bt-verdict-card {
    display: flex; gap: 32px; align-items: center;
    padding: 32px; border-radius: 24px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff; box-shadow: 0 8px 40px rgba(0,0,0,0.15);
    animation: sftFadeInUp 0.6s ease;
}
.sft-bt-verdict-score-wrap { display: flex; flex-direction: column; align-items: center; gap: 12px; flex-shrink: 0; }
.sft-bt-verdict-ring { position: relative; width: 120px; height: 120px; }
.sft-bt-verdict-ring svg { width: 100%; height: 100%; }
.sft-bt-verdict-score {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-size: 36px; font-weight: 900; letter-spacing: -0.03em;
}
.sft-bt-verdict-grade {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 12px;
    font-size: 20px; font-weight: 900; color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.sft-bt-verdict-detail { flex: 1; min-width: 0; }
.sft-bt-verdict-title {
    font-size: 20px; font-weight: 800; margin: 0 0 8px; color: #fff;
    letter-spacing: -0.02em;
}
.sft-bt-verdict-title::before, .sft-bt-verdict-title::after { content: none !important; display: none !important; }
.sft-bt-verdict-comment { font-size: 14px; color: rgba(255,255,255,0.7); margin: 0 0 20px; line-height: 1.6; }
.sft-bt-verdict-bars { display: flex; flex-direction: column; gap: 8px; }
.sft-bt-vbar-head { display: flex; justify-content: space-between; font-size: 12px; margin-bottom: 3px; }
.sft-bt-vbar-label { color: rgba(255,255,255,0.6); font-weight: 600; }
.sft-bt-vbar-val { color: rgba(255,255,255,0.9); font-weight: 700; }
.sft-bt-vbar-track { height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; }
.sft-bt-vbar-fill { height: 100%; border-radius: 3px; transition: width 1s ease-out; }
.sft-bt-verdict-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.sft-bt-vtag {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 5px 14px; border-radius: 20px;
    font-size: 12px; font-weight: 700;
}
.sft-bt-vtag--good { background: rgba(34,197,94,0.1); color: #22c55e; border: 1px solid rgba(34,197,94,0.2); }
.sft-bt-vtag--bad { background: rgba(239,68,68,0.1); color: #ef4444; border: 1px solid rgba(239,68,68,0.2); }
.sft-bt-vtag--warn { background: rgba(234,179,8,0.1); color: #eab308; border: 1px solid rgba(234,179,8,0.2); }
@media (max-width: 700px) {
    .sft-bt-verdict-card { flex-direction: column; text-align: center; padding: 24px; gap: 20px; }
    .sft-bt-verdict-ring { width: 100px; height: 100px; }
    .sft-bt-verdict-score { font-size: 28px; }
    .sft-bt-verdict-title { font-size: 17px; }
    .sft-bt-verdict-tags { justify-content: center; }
}

/* ═══════════════════════════════════════
   Judgment Text & Section Descriptions
   ═══════════════════════════════════════ */
.sft-bt-summary-judge {
    font-size: 11px; margin: 6px 0 0; font-weight: 600;
    line-height: 1.3; letter-spacing: 0.01em;
}
.sft-bt-summary-judge.is-good { color: var(--sft-success, #22c55e); }
.sft-bt-summary-judge.is-warn { color: #eab308; }
.sft-bt-summary-judge.is-bad { color: var(--sft-error, #ef4444); }
.sft-bt-section-desc {
    font-size: 13px; color: var(--sft-muted, #9ca3af);
    margin: -12px 0 20px; line-height: 1.6;
    padding-left: 46px;
}
@media (max-width: 600px) {
    .sft-bt-section-desc { padding-left: 0; font-size: 12px; }
    .sft-bt-summary-judge { font-size: 10px; }
}

/* ═══════════════════════════════════════
   Enhanced Tooltips (multi-line)
   ═══════════════════════════════════════ */
[data-tooltip]:hover::after {
    white-space: normal !important;
    max-width: 260px;
    text-align: left;
    padding: 10px 14px;
    line-height: 1.5;
    font-size: 12px;
    border-radius: 10px;
}

/* ═══════════════════════════════════════
   Click Popover (replaces hover tooltip)
   ═══════════════════════════════════════ */
[data-tooltip]:hover::after { display: none !important; }
.sft-bt-summary-card { overflow: visible !important; }
.sft-bt-tooltip-icon {
    cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--sft-border, #e2e8f0);
    color: var(--sft-muted, #9ca3af);
    font-size: 9px; font-weight: 700; line-height: 1;
    flex-shrink: 0; vertical-align: middle;
    transition: background 0.2s, color 0.2s;
}
.sft-bt-tooltip-icon:hover {
    background: var(--sft-primary, #FF7A3D);
    color: #fff;
}
.sft-bt-popover {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    width: 280px;
    padding: 14px 16px;
    background: #0f172a;
    color: #e2e8f0;
    font-size: 13px;
    font-weight: 400;
    line-height: 1.6;
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    z-index: 100;
    animation: sftPopIn 0.2s ease-out;
    pointer-events: auto;
}
.sft-bt-popover::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: #0f172a;
}
.sft-bt-popover-close {
    position: absolute; top: 6px; right: 8px;
    background: none; border: none; color: #64748b;
    font-size: 16px; cursor: pointer; padding: 2px;
    line-height: 1;
}
.sft-bt-popover-close:hover { color: #fff; }
@keyframes sftPopIn {
    from { opacity: 0; transform: translateX(-50%) translateY(4px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@media (max-width: 600px) {
    .sft-bt-popover {
        width: 240px; font-size: 12px; padding: 12px 14px;
        left: auto; right: -20px; transform: none;
    }
    .sft-bt-popover::after { left: auto; right: 28px; transform: none; }
}

/* ═══════════════════════════════════════
   Storytelling UX — Color Themes & Progressive Disclosure
   ═══════════════════════════════════════ */

/* -- Section color themes (left border accent) -- */
.sft-bt-section--purple { --sec-color: #7c3aed; --sec-bg: rgba(124,58,237,0.04); }
.sft-bt-section--blue { --sec-color: #3b82f6; --sec-bg: rgba(59,130,246,0.04); }
.sft-bt-section--green { --sec-color: #16a34a; --sec-bg: rgba(22,163,74,0.04); }
.sft-bt-section--indigo { --sec-color: #6366f1; --sec-bg: rgba(99,102,241,0.04); }
.sft-bt-section--gray { --sec-color: #6b7280; --sec-bg: rgba(107,114,128,0.04); }

/* -- Collapsible section (details/summary) -- */
details.sft-bt-section {
    border: 1px solid var(--sft-border, #e2e8f0);
    border-left: 4px solid var(--sec-color, var(--sft-primary, #FF7A3D));
    border-radius: 16px;
    background: var(--sec-bg, transparent);
    overflow: hidden;
    transition: box-shadow 0.25s;
}
details.sft-bt-section:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
details.sft-bt-section[open] {
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.sft-bt-section-summary {
    padding: 20px 24px;
    cursor: pointer;
    list-style: none;
    display: block;
}
.sft-bt-section-summary::-webkit-details-marker { display: none; }
.sft-bt-section-summary::marker { content: ''; }
.sft-bt-section-summary .sft-bt-section-heading {
    margin-bottom: 4px;
    border-bottom: none;
    padding-bottom: 0;
}
.sft-bt-section-summary .sft-bt-section-desc {
    margin: 0 0 0 46px;
    padding-left: 0;
}
.sft-bt-expand-hint {
    display: inline-block;
    margin-left: 46px;
    margin-top: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--sec-color, var(--sft-primary, #FF7A3D));
    transition: opacity 0.2s;
}
.sft-bt-expand-hint::after {
    content: ' ▾';
    font-size: 10px;
}
details.sft-bt-section[open] .sft-bt-expand-hint {
    display: none;
}
.sft-bt-section-content {
    padding: 0 24px 24px;
    animation: sftSectionOpen 0.3s ease-out;
}
@keyframes sftSectionOpen {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* -- Section heading icon color by theme -- */
details.sft-bt-section .sft-bt-sh-icon {
    background: linear-gradient(135deg, color-mix(in srgb, var(--sec-color) 15%, transparent), color-mix(in srgb, var(--sec-color) 5%, transparent));
    color: var(--sec-color);
}
/* Fallback for browsers without color-mix */
.sft-bt-section--purple .sft-bt-sh-icon { background: rgba(124,58,237,0.1); color: #7c3aed; }
.sft-bt-section--blue .sft-bt-sh-icon { background: rgba(59,130,246,0.1); color: #3b82f6; }
.sft-bt-section--green .sft-bt-sh-icon { background: rgba(22,163,74,0.1); color: #16a34a; }
.sft-bt-section--indigo .sft-bt-sh-icon { background: rgba(99,102,241,0.1); color: #6366f1; }
.sft-bt-section--gray .sft-bt-sh-icon { background: rgba(107,114,128,0.1); color: #6b7280; }

/* -- Key Takeaways -- */
.sft-bt-takeaways {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 20px;
}
.sft-bt-takeaway {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    animation: sftFadeInUp 0.4s ease both;
}
.sft-bt-takeaway:nth-child(1) { animation-delay: 0.1s; }
.sft-bt-takeaway:nth-child(2) { animation-delay: 0.2s; }
.sft-bt-takeaway:nth-child(3) { animation-delay: 0.3s; }
.sft-bt-takeaway:nth-child(4) { animation-delay: 0.4s; }
.sft-bt-takeaway:nth-child(5) { animation-delay: 0.5s; }
.sft-bt-takeaway svg { flex-shrink: 0; }
.sft-bt-takeaway--good { background: rgba(34,197,94,0.1); color: #16a34a; }
.sft-bt-takeaway--warn { background: rgba(234,179,8,0.1); color: #a16207; }
.sft-bt-takeaway--bad { background: rgba(239,68,68,0.1); color: #dc2626; }

/* -- Chart Insights -- */
.sft-bt-chart-insight {
    font-size: 13px;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 10px;
    margin-bottom: 10px;
    display: none;
}
.sft-bt-chart-insight:not(:empty) { display: block; }
.sft-bt-ci--good { background: rgba(34,197,94,0.08); color: #16a34a; border-left: 3px solid #22c55e; }
.sft-bt-ci--warn { background: rgba(234,179,8,0.08); color: #a16207; border-left: 3px solid #eab308; }
.sft-bt-ci--bad { background: rgba(239,68,68,0.08); color: #dc2626; border-left: 3px solid #ef4444; }
.sft-bt-ci--info { background: rgba(59,130,246,0.08); color: #2563eb; border-left: 3px solid #3b82f6; }

/* -- Responsive -- */
@media (max-width: 600px) {
    details.sft-bt-section { border-radius: 12px; }
    .sft-bt-section-summary { padding: 16px; }
    .sft-bt-section-content { padding: 0 16px 16px; }
    .sft-bt-expand-hint { margin-left: 0; }
    .sft-bt-section-summary .sft-bt-section-desc { margin-left: 0; }
    .sft-bt-takeaway { font-size: 13px; padding: 8px 12px; }
}

/* ═══════════════════════════════════════
   Gauge Bars for Metric Cards
   ═══════════════════════════════════════ */
.sft-bt-gauge { margin: 8px 0 2px; }
.sft-bt-gauge-track {
    position: relative;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, rgba(239,68,68,0.12) 0%, rgba(234,179,8,0.12) 40%, rgba(34,197,94,0.12) 100%);
    overflow: visible;
}
.sft-bt-gauge-fill {
    position: absolute; top: 0; left: 0; height: 100%;
    border-radius: 3px;
    opacity: 0.4;
    transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}
.sft-bt-gauge-dot {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px; height: 12px;
    border-radius: 50%;
    border: 2px solid var(--sft-bg-card, #fff);
    box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    transition: left 1s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 1;
}
@media (max-width: 600px) {
    .sft-bt-gauge-dot { width: 10px; height: 10px; }
}

/* ═══════════════════════════════════════
   Sample Button & Share Bar
   ═══════════════════════════════════════ */
.sft-bt-sample-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 24px; margin-top: 16px;
    font-size: 14px; font-weight: 700;
    background: linear-gradient(135deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
    color: #fff; border: none; border-radius: 50px;
    cursor: pointer; position: relative; z-index: 1;
    box-shadow: 0 4px 16px rgba(255,122,61,0.25);
    transition: all 0.25s;
}
.sft-bt-sample-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,122,61,0.35);
}
.sft-bt-share-bar {
    display: flex; gap: 8px; margin-top: 20px; justify-content: center; flex-wrap: wrap;
}
.sft-bt-share-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px; border-radius: 24px;
    font-size: 13px; font-weight: 600;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.8);
    cursor: pointer; transition: all 0.2s;
    text-decoration: none;
}
.sft-bt-share-btn:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.4);
    color: #fff;
}
.sft-bt-share-btn--copy {
    border-color: rgba(255,255,255,0.15);
}
@media (max-width: 600px) {
    .sft-bt-sample-btn { padding: 8px 20px; font-size: 13px; }
    .sft-bt-share-btn { padding: 6px 14px; font-size: 12px; }
}

/* ==================================================
   Design Upgrade v3.1 - 2026-03-24
   Phase 1: Dark Mode
   Phase 2: Verdict Glow
   Phase 3: Summary Cards + Glassmorphism
   Phase 4: Heatmap Modernization
   Phase 6: Micro-interactions
   ================================================== */

/* ==================================================
   Phase 2: Verdict Card Glow Enhancement
   ================================================== */
.sft-bt-verdict-card {
    --verdict-glow: #22c55e;
    --verdict-glow-rgb: 34,197,94;
    position: relative;
    overflow: hidden;
}

/* Subtle dot pattern background */
.sft-bt-verdict-card::before {
    content: "";
    position: absolute; inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: 0;
}
.sft-bt-verdict-card > * { position: relative; z-index: 1; }

/* Score number gradient */
.sft-bt-verdict-score {
    background: linear-gradient(135deg, var(--verdict-glow), rgba(255,255,255,0.9));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 12px rgba(var(--verdict-glow-rgb), 0.4));
}

/* Ring gauge glow */
.sft-bt-verdict-ring svg circle:last-child {
    filter: drop-shadow(0 0 8px rgba(var(--verdict-glow-rgb), 0.5));
}

/* Grade badge glow */
.sft-bt-verdict-grade {
    box-shadow: 0 4px 12px rgba(0,0,0,0.2),
                0 0 20px rgba(var(--verdict-glow-rgb), 0.3);
}

/* Bar fill overlay gradient */
.sft-bt-vbar-fill {
    background-image: linear-gradient(90deg, rgba(255,255,255,0.15), transparent);
    background-blend-mode: overlay;
}

/* ==================================================
   Phase 3: Summary Card Differentiation + Glassmorphism
   ================================================== */

/* Glassmorphic summary cards */
.sft-bt-summary-card {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
@supports (backdrop-filter: blur(8px)) {
    .sft-bt-summary-card {
        background: rgba(249,250,251,0.7);
        border: 1px solid rgba(255,255,255,0.4);
    }
}

/* Per-metric accent colors */
.sft-bt-summary-card[data-metric="profit"]::before {
    background: linear-gradient(90deg, var(--sft-success, #22c55e), var(--sft-success-dark, #16a34a));
}
.sft-bt-summary-card[data-metric="pf"]::before {
    background: linear-gradient(90deg, var(--sft-primary, #FF7A3D), var(--sft-primary-light, #ff9a6c));
}
.sft-bt-summary-card[data-metric="dd"]::before {
    background: linear-gradient(90deg, var(--sft-error, #ef4444), #f97316);
}
.sft-bt-summary-card[data-metric="winrate"]::before {
    background: linear-gradient(90deg, var(--sft-blue, #3b82f6), #60a5fa);
}
.sft-bt-summary-card[data-metric="trades"]::before {
    background: linear-gradient(90deg, #64748b, #94a3b8);
}
.sft-bt-summary-card[data-metric="sharpe"]::before {
    background: linear-gradient(90deg, #8b5cf6, #a78bfa);
}

/* Hover glow per metric */
.sft-bt-summary-card[data-metric="profit"]:hover { box-shadow: 0 8px 24px rgba(34,197,94,0.1); }
.sft-bt-summary-card[data-metric="dd"]:hover { box-shadow: 0 8px 24px rgba(239,68,68,0.1); }
.sft-bt-summary-card[data-metric="winrate"]:hover { box-shadow: 0 8px 24px rgba(59,130,246,0.1); }
.sft-bt-summary-card[data-metric="sharpe"]:hover { box-shadow: 0 8px 24px rgba(139,92,246,0.1); }
.sft-bt-summary-card[data-metric="trades"]:hover { box-shadow: 0 8px 24px rgba(100,116,139,0.1); }

/* ==================================================
   Phase 4: Heatmap Modernization
   ================================================== */
.sft-bt-heatmap {
    border-collapse: separate;
    border-spacing: 3px;
}
.sft-bt-heatmap td {
    border: none;
    border-radius: var(--sft-radius-sm, 6px);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    font-weight: 600;
    padding: 5px 6px;
}
.sft-bt-heatmap td:hover {
    transform: scale(1.08);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    z-index: 1;
    position: relative;
}
.sft-bt-heatmap th {
    border: none;
    border-radius: var(--sft-radius-sm, 6px);
    padding: 5px 6px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.sft-bt-heatmap-legend-bar {
    height: 10px;
    border-radius: 5px;
    width: 100px;
}

/* ==================================================
   Phase 6: Micro-interactions
   ================================================== */

/* Button ripple effect */
.sft-bt-mc-run,
.sft-bt-sample-btn {
    overflow: hidden;
}
.sft-bt-mc-run::after,
.sft-bt-sample-btn::after {
    content: "";
    position: absolute; inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 10%, transparent 10.01%);
    transform: scale(10); opacity: 0;
    transition: transform 0.5s, opacity 0.8s;
    pointer-events: none;
}
.sft-bt-mc-run:active::after,
.sft-bt-sample-btn:active::after {
    transform: scale(0); opacity: 1; transition: 0s;
}

/* Takeaway staggered entrance */
.sft-bt-takeaway {
    animation: sftFadeInUp 0.4s ease both;
}
.sft-bt-takeaway:nth-child(1) { animation-delay: 0s; }
.sft-bt-takeaway:nth-child(2) { animation-delay: 0.06s; }
.sft-bt-takeaway:nth-child(3) { animation-delay: 0.12s; }
.sft-bt-takeaway:nth-child(4) { animation-delay: 0.18s; }
.sft-bt-takeaway:nth-child(5) { animation-delay: 0.24s; }
/* Scroll-driven reveal — DISABLED: causes opacity:0 freeze */

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .sft-bt-mc-run::after,
    .sft-bt-sample-btn::after { display: none; }
    .sft-bt-heatmap td:hover { transform: none; }
    .sft-bt-takeaway { animation: none; }
}

/* ==================================================
   Phase 7: border-radius Normalization
   ================================================== */

/* Normalize toast, export guide cards to design tokens */
.sft-bt-toast { border-radius: var(--sft-radius-md, 10px); }
.sft-bt-export-guide-card { border-radius: var(--sft-radius-md, 10px); }
.sft-bt-export-menu { border-radius: var(--sft-radius-md, 10px); }
.sft-bt-mc-run { border-radius: var(--sft-radius-md, 10px); }
.sft-bt-popover { border-radius: var(--sft-radius-md, 10px); }

/* Detail cards use lg */
.sft-bt-detail-card { border-radius: var(--sft-radius-lg, 14px); }

/* Filter inputs use sm */
.sft-bt-toggle { border-radius: var(--sft-radius-sm, 6px); }
.sft-bt-input-sm { border-radius: var(--sft-radius-sm, 6px); }
.sft-bt-filter-reset { border-radius: var(--sft-radius-sm, 6px); }
.sft-bt-inline-select { border-radius: var(--sft-radius-sm, 6px); }
.sft-bt-trade-search { border-radius: var(--sft-radius-sm, 6px); }

/* ==================================================
   Phase 8: Mobile Responsive Improvements
   ================================================== */

/* Sticky bar: hide labels on small screens, show only values */
@media (max-width: 480px) {
    .sft-bt-sticky-bar {
        gap: 8px;
        padding: 8px 12px;
    }
    .sft-bt-sticky-label {
        font-size: 8px;
        letter-spacing: 0.02em;
    }
    .sft-bt-sticky-value {
        font-size: 13px;
    }
    /* Hide 3rd and 4th metric on very small screens */
    .sft-bt-sticky-metric:nth-child(n+4) {
        display: none;
    }
}

/* EA tab bar: horizontal scroll with snap */
.sft-bt-ea-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.sft-bt-ea-tabs::-webkit-scrollbar { display: none; }
.sft-bt-ea-tabs .sft-tab-btn {
    scroll-snap-align: start;
    flex-shrink: 0;
}

/* File bar horizontal scroll */
.sft-bt-file-list {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.sft-bt-file-list::-webkit-scrollbar { display: none; }

/* Touch targets: ensure 44px minimum */
@media (max-width: 600px) {
    .sft-bt-accordion-toggle {
        min-height: 44px;
        padding: 10px 12px;
    }
    .sft-bt-filter-reset {
        min-height: 44px;
        padding: 8px 16px;
    }
    .sft-bt-mc-run {
        min-height: 44px;
        padding: 10px 24px;
    }
    .sft-bt-copy-summary-btn {
        min-height: 36px;
        min-width: 36px;
    }
    .sft-bt-export-btn {
        min-height: 44px;
    }
    .sft-bt-share-btn {
        min-height: 40px;
        padding: 8px 16px;
    }
    /* Verdict card: tighter on mobile */
    .sft-bt-verdict-card {
        padding: 20px 16px;
        border-radius: 16px;
    }
}

/* Heatmap scroll indicator */
.sft-bt-heatmap-wrap {
    position: relative;
}
.sft-bt-heatmap-wrap::after {
    content: "";
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 24px;
    background: linear-gradient(to right, transparent, var(--sft-bg-card, #fff));
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}
@media (max-width: 600px) {
    .sft-bt-heatmap-wrap::after {
        opacity: 1;
    }
}

/* ==================================================
   Design Upgrade v3.1 Part 3 — Additional Polish
   ================================================== */

/* -- Tabular numbers for metric values -- */
.sft-bt-summary-value,
.sft-bt-detail-value,
.sft-bt-mc-stat-value,
.sft-bt-sticky-value,
.sft-bt-verdict-score {
    font-family: 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* -- Preview cards: 3D tilt hover -- */
.sft-bt-preview-card {
    transform-style: preserve-3d;
    perspective: 800px;
}
.sft-bt-preview-card:hover {
    transform: translateY(-6px) rotateX(2deg) rotateY(-1deg);
}

/* -- Dropzone: enhanced drag-over state -- */
.sft-bt-dropzone.is-dragover {
    transform: scale(1.01);
}

/* -- File chip polish -- */
.sft-bt-file-chip {
    transition: all 0.2s ease;
}
.sft-bt-file-chip:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.sft-bt-file-chip.is-active {
    box-shadow: 0 0 0 2px rgba(255,122,61,0.2);
}

/* -- Step numbers: subtle pulse on load -- */
@keyframes sftStepPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,122,61,0.3); }
    50% { box-shadow: 0 0 0 8px rgba(255,122,61,0); }
}
.sft-bt-step-num {
    animation: sftStepPulse 2s ease-in-out 1;
}
.sft-bt-step:nth-child(2) .sft-bt-step-num { animation-delay: 0.3s; }
.sft-bt-step:nth-child(3) .sft-bt-step-num { animation-delay: 0.6s; }

/* -- Collapsible section: open glow on left border -- */
details.sft-bt-section[open] {
    border-left-width: 4px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06),
                -4px 0 16px -4px color-mix(in srgb, var(--sec-color, #FF7A3D) 20%, transparent);
}

/* -- Comparison table: zebra + hover -- */
.sft-bt-compare-table tbody tr:nth-child(even) {
    background: var(--sft-hover-bg, rgba(255,122,61,0.02));
}
.sft-bt-compare-table tbody tr:hover {
    background: var(--sft-hover-bg-strong, rgba(255,122,61,0.06));
}

/* -- Section colors dark mode -- */

/* -- Skeleton loading improvement -- */
.sft-bt-skeleton {
    background: linear-gradient(
        90deg,
        var(--sft-border, #e5e7eb) 0%,
        var(--sft-card-bg, #f5f5f5) 20%,
        var(--sft-border, #e5e7eb) 40%,
        var(--sft-border, #e5e7eb) 100%
    );
    background-size: 300% 100%;
}
@keyframes sft-bt-skeleton-pulse {
    0% { background-position: 300% 0; }
    100% { background-position: -300% 0; }
}

/* -- Smooth number transition on summary values -- */
.sft-bt-summary-value {
    transition: color 0.3s ease;
}

/* -- Chart insight cards: icon + subtle left glow -- */
.sft-bt-chart-insight {
    position: relative;
    padding-left: 12px;
}
.sft-bt-chart-insight::before {
    content: "";
    position: absolute;
    left: 0; top: 2px; bottom: 2px;
    width: 3px;
    border-radius: 2px;
}
.sft-bt-ci--good::before { background: var(--sft-success, #22c55e); }
.sft-bt-ci--warn::before { background: #eab308; }
.sft-bt-ci--bad::before { background: var(--sft-error, #ef4444); }
.sft-bt-ci--info::before { background: var(--sft-blue, #3b82f6); }

/* -- Trades table: improved readability -- */
.sft-bt-trade-table tbody tr:nth-child(even) {
    background: rgba(0,0,0,0.015);
}

/* -- MC stat cards: numbered badge -- */
.sft-bt-mc-stat {
    text-align: center;
}
.sft-bt-mc-stat-value {
    font-variant-numeric: tabular-nums;
}

/* -- Section summary hover: subtle lift -- */
.sft-bt-section-summary:hover {
    background: rgba(0,0,0,0.01);
}

/* -- Accordion panel smoother open -- */
.sft-bt-accordion-panel.is-open {
    animation: sftSectionOpen 0.25s ease-out;
}

/* -- Share buttons hover glow -- */
.sft-bt-share-btn:hover {
    box-shadow: 0 2px 12px rgba(255,255,255,0.1);
}

/* -- What-If summary diff: animated flash -- */
@keyframes sftDiffFlash {
    0% { opacity: 0; transform: translateY(-4px); }
    100% { opacity: 1; transform: translateY(0); }
}
.sft-bt-summary-diff {
    animation: sftDiffFlash 0.3s ease-out;
}

/* -- Sticky bar: gradient fade on edges -- */
.sft-bt-sticky-bar {
    position: relative;
}
.sft-bt-sticky-bar::after {
    content: "";
    position: absolute;
    right: 0; top: 0; bottom: 0;
    width: 32px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.8));
    pointer-events: none;
    border-radius: 0 0 12px 0;
}

/* -- prefers-reduced-motion for new animations -- */
@media (prefers-reduced-motion: reduce) {
    .sft-bt-step-num { animation: none; }
    .sft-bt-preview-card:hover { transform: translateY(-4px); }
    .sft-bt-dropzone.is-dragover { transform: none; }
    .sft-bt-summary-diff { animation: none; }
    .sft-bt-accordion-panel.is-open { animation: none; }
}

/* ==================================================
   Design Upgrade v3.1 Part 4 — Final Polish
   ================================================== */

/* -- Custom scrollbar (tables, heatmaps) -- */
.sft-bt-heatmap-wrap::-webkit-scrollbar,
.sft-bt-table-wrap::-webkit-scrollbar,
.sft-bt-trade-table-wrap::-webkit-scrollbar {
    height: 6px;
}
.sft-bt-heatmap-wrap::-webkit-scrollbar-track,
.sft-bt-table-wrap::-webkit-scrollbar-track,
.sft-bt-trade-table-wrap::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}
.sft-bt-heatmap-wrap::-webkit-scrollbar-thumb,
.sft-bt-table-wrap::-webkit-scrollbar-thumb,
.sft-bt-trade-table-wrap::-webkit-scrollbar-thumb {
    background: var(--sft-border, #d1d5db);
    border-radius: 3px;
}
.sft-bt-heatmap-wrap::-webkit-scrollbar-thumb:hover,
.sft-bt-table-wrap::-webkit-scrollbar-thumb:hover,
.sft-bt-trade-table-wrap::-webkit-scrollbar-thumb:hover {
    background: var(--sft-muted, #9ca3af);
}
/* Firefox */
.sft-bt-heatmap-wrap,
.sft-bt-table-wrap,
.sft-bt-trade-table-wrap {
    scrollbar-width: thin;
    scrollbar-color: var(--sft-border, #d1d5db) transparent;
}

/* -- Tooltip redesign: glassmorphic -- */
[data-tooltip]:hover::after {
    background: rgba(15,23,42,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2), 0 0 1px rgba(255,255,255,0.1);
    padding: 8px 14px;
    font-size: 12px;
    line-height: 1.5;
    letter-spacing: 0.01em;
    animation: sftTooltipIn 0.15s ease-out;
}
@keyframes sftTooltipIn {
    from { opacity: 0; transform: translateX(-50%) translateY(4px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Tooltip icon: subtle pulse on hover */
.sft-bt-tooltip-icon {
    transition: all 0.2s ease;
}
.sft-bt-summary-card:hover .sft-bt-tooltip-icon {
    background: var(--sft-primary, #FF7A3D);
    color: #fff;
    transform: scale(1.15);
}

/* -- Dropzone: floating particles (CSS-only) -- */
.sft-bt-dropzone {
    overflow: hidden;
}
.sft-bt-dropzone-particles {
    position: absolute; inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}
.sft-bt-dropzone-particles span {
    position: absolute;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--sft-primary, #FF7A3D);
    opacity: 0.12;
    animation: sftParticleFloat var(--dur, 8s) var(--delay, 0s) infinite ease-in-out;
}
@keyframes sftParticleFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.08;
    }
    25% {
        transform: translate(var(--dx1, 30px), var(--dy1, -40px)) scale(1.5);
        opacity: 0.18;
    }
    50% {
        transform: translate(var(--dx2, -20px), var(--dy2, -70px)) scale(1);
        opacity: 0.12;
    }
    75% {
        transform: translate(var(--dx3, 10px), var(--dy3, -30px)) scale(1.3);
        opacity: 0.15;
    }
}
@media (prefers-reduced-motion: reduce) {
    .sft-bt-dropzone-particles span { animation: none; opacity: 0.06; }
}

/* -- PDF export optimization -- */
@media print {
    /* Force light theme for print */
    .sft-bt-wrap {
        color: #1E1810 !important;
        background: #fff !important;
    }
    .sft-bt-summary-card {
        backdrop-filter: none !important;
        background: #f9fafb !important;
        border: 1px solid #e5e7eb !important;
        box-shadow: none !important;
    }
    .sft-bt-verdict-card {
        background: linear-gradient(135deg, #0f172a, #1e293b) !important;
        box-shadow: none !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    .sft-bt-verdict-score {
        -webkit-text-fill-color: initial !important;
        background: none !important;
        filter: none !important;
    }
    .sft-bt-verdict-card::before { display: none !important; }
    .sft-bt-dropzone-particles { display: none !important; }
    /* Ensure chart backgrounds print */
    canvas {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    /* Force heatmap colors to print */
    .sft-bt-heatmap td {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    /* Verdict tags print */
    .sft-bt-vtag,
    .sft-bt-takeaway {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    /* Gauge bars print */
    .sft-bt-vbar-fill,
    .sft-bt-gauge-fill,
    .sft-bt-gauge-dot {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    /* Section borders */
    details.sft-bt-section {
        border-left-color: var(--sec-color) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    /* Open all collapsed sections for full print */
    details.sft-bt-section {
        display: block !important;
    }
    details.sft-bt-section > .sft-bt-section-content {
        display: block !important;
    }
    .sft-bt-expand-hint { display: none !important; }
    /* Page breaks */
    .sft-bt-verdict,
    .sft-bt-section {
        page-break-inside: avoid;
    }
    .sft-bt-chart-row {
        page-break-inside: avoid;
    }
    /* Remove animations */
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* ═══════════════════════════════════════
   Walk-Forward 解析 (v3.3 — 過最適化検出)
   ═══════════════════════════════════════ */
.sft-bt-section--orange { --sec-color: #FF7A3D; --sec-bg: rgba(255,122,61,0.04); }
.sft-bt-section--orange .sft-bt-sh-icon { background: rgba(255,122,61,0.1); color: #FF7A3D; }

.sft-bt-wf-summary {
    display: flex;
    gap: 16px;
    align-items: stretch;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.sft-bt-wf-score {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border: 2px solid;
    border-radius: 14px;
    min-width: 110px;
    background: var(--sft-bg-card, #fff);
}
.sft-bt-wf-score-num {
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}
.sft-bt-wf-score-label {
    font-size: 11px;
    color: var(--sft-muted, #6b7280);
    margin-top: 6px;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.sft-bt-wf-warning,
.sft-bt-wf-ok {
    flex: 1;
    min-width: 240px;
    padding: 12px 16px;
    border-left: 3px solid;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.6;
}
.sft-bt-wf-warning {
    background: var(--sft-error-bg-faint, rgba(239,68,68,0.06));
    border-left-color: var(--sft-error, #ef4444);
}
.sft-bt-wf-ok {
    background: var(--sft-success-bg-faint, rgba(34,197,94,0.06));
    border-left-color: var(--sft-success, #22c55e);
}
.sft-bt-wf-warning strong,
.sft-bt-wf-ok strong {
    display: inline-block;
    margin-bottom: 4px;
    font-size: 13px;
}
.sft-bt-wf-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    font-variant-numeric: tabular-nums;
}
.sft-bt-wf-table th,
.sft-bt-wf-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--sft-border, rgba(0,0,0,0.06));
}
.sft-bt-wf-table th {
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sft-muted, #6b7280);
    background: var(--sft-bg-card, rgba(0,0,0,0.02));
}
.sft-bt-wf-table tbody tr:hover {
    background: var(--sft-hover-bg, rgba(0,0,0,0.02));
}
.sft-bt-wf-table .sft-bt-pos {
    color: var(--sft-success, #16a34a);
    font-weight: 700;
}
.sft-bt-wf-table .sft-bt-neg {
    color: var(--sft-error, #ef4444);
    font-weight: 700;
}
@media (max-width: 640px) {
    .sft-bt-wf-summary { flex-direction: column; }
    .sft-bt-wf-score { width: 100%; }
    .sft-bt-wf-table { font-size: 12px; }
    .sft-bt-wf-table th, .sft-bt-wf-table td { padding: 8px 10px; }
}

/* ════════════════════════════════════════════════════════════════════
   Phase C-2 階層 2 (v3.5 2026-05-08): DS visual rewrite — 案 B Section + Card 構造 DS 整合
   sys-tre Design System v2 (tokens.css + components.css) spec で visual 全面整合。
   class 名は維持 (.sft-bt-* 既存 selector)、 末尾 cascade override で書き換え。
   階層 3 で .ds-bt-* prefix へ rename + 永続 sub-system 化予定。
   ════════════════════════════════════════════════════════════════════ */

/* ── DS tokens を .sft-bt-wrap scope に inline 定義 (DS 本体無依存・self-contained) ── */
.sft-bt-wrap {
    /* Typography scale */
    --ds-text-display: clamp(2.5rem, 5vw, 4rem);
    --ds-text-h2: clamp(1.5rem, 3vw, 2.25rem);
    --ds-text-h3: clamp(1.25rem, 2vw, 1.5rem);
    --ds-text-h4: 1.125rem;
    --ds-text-stat: clamp(2.5rem, 5vw, 4rem);
    --ds-fw-bold: 700;
    --ds-fw-black: 900;
    --ds-lh-tight: 1.25;
    --ds-lh-heading: 1.4;
    --ds-lh-body: 1.75;
    --ds-ls-tight: -0.02em;
    --ds-ls-wide: 0.05em;

    /* Spacing */
    --ds-section-y: clamp(2.5rem, 6vw, 4.5rem);
    --ds-space-2: 8px; --ds-space-3: 12px; --ds-space-4: 16px;
    --ds-space-5: 20px; --ds-space-6: 24px; --ds-space-8: 32px;
    --ds-space-10: 40px; --ds-space-12: 48px;

    /* Radius */
    --ds-radius-sm: 8px;
    --ds-radius-md: 16px;
    --ds-radius-lg: 24px;
    --ds-radius-xl: 32px;
    --ds-radius-pill: 999px;

    /* Shadow / Glow */
    --ds-shadow-sm: 0 2px 8px rgba(14, 10, 6, .06);
    --ds-shadow-md: 0 8px 32px rgba(14, 10, 6, .10);
    --ds-shadow-lg: 0 16px 48px rgba(14, 10, 6, .14);
    --ds-shadow-pop: 0 8px 32px rgba(14, 10, 6, .18);
    --ds-shadow-float: 0 20px 60px -12px rgba(14, 10, 6, .22);
    --ds-shadow-card-3d: 0 2px 4px rgba(14,10,6,.08), 0 12px 28px -6px rgba(14,10,6,.20);
    --ds-glow-primary: 0 0 24px rgba(255, 122, 61, .35);
    --ds-glow-gold: 0 0 32px rgba(255, 215, 0, .45);
    --ds-glow-teal: 0 0 32px rgba(8, 145, 178, .45);

    /* Gradients */
    --ds-text-gradient-primary: linear-gradient(92deg, #FF7A3D 0%, #FF5100 100%);
    --ds-text-gradient-gold: linear-gradient(92deg, #FFD700 0%, #FFA500 100%);
    --ds-text-gradient-success: linear-gradient(92deg, #22C55E 0%, #15803D 100%);
    --ds-text-gradient-danger: linear-gradient(92deg, #EF4444 0%, #B91C1C 100%);
    --ds-text-gradient-teal: linear-gradient(92deg, #06B6D4 0%, #0E7490 100%);
    --ds-text-gradient-indigo: linear-gradient(92deg, #6366F1 0%, #3730A3 100%);

    /* Motion */
    --ds-dur: 250ms;
    --ds-ease: cubic-bezier(.4, 0, .2, 1);
}

/* ─────────────────────────────────────────
   1. Section layout — DS section-head pattern
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-section,
.sft-bt-wrap details.sft-bt-section {
    padding-block: var(--ds-section-y);
    margin: 0 auto var(--ds-space-6);
    max-width: 1300px;
    border-radius: var(--ds-radius-lg);
    border-left: 4px solid transparent;
    transition: border-color var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-section-heading {
    font-size: var(--ds-text-h2);
    font-weight: var(--ds-fw-black);
    line-height: var(--ds-lh-heading);
    letter-spacing: var(--ds-ls-tight);
    color: var(--sft-text);
    margin: 0 0 var(--ds-space-3);
}
.sft-bt-wrap .sft-bt-section-desc {
    font-size: var(--ds-text-body);
    color: var(--sft-text-sub);
    line-height: var(--ds-lh-body);
    max-width: 720px;
    margin: 0 0 var(--ds-space-10);
}

/* color modifier — DS palette accent line (= EA card 案B pattern 踏襲) */
.sft-bt-wrap .sft-bt-section--purple { border-left-color: #8B5CF6; }
.sft-bt-wrap .sft-bt-section--blue   { border-left-color: var(--sft-blue, #3B82F6); }
.sft-bt-wrap .sft-bt-section--green  { border-left-color: var(--sft-success, #16A34A); }
.sft-bt-wrap .sft-bt-section--indigo { border-left-color: #6366F1; }
.sft-bt-wrap .sft-bt-section--gray   { border-left-color: var(--sft-muted, #8C8480); }
.sft-bt-wrap .sft-bt-section--orange { border-left-color: var(--sft-primary, #FF7A3D); }

/* ─────────────────────────────────────────
   2. Dropzone — DS hero feature card pattern
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-dropzone {
    border-radius: var(--ds-radius-xl);
    box-shadow: var(--ds-shadow-card-3d);
    padding: clamp(48px, 8vw, 80px) clamp(24px, 4vw, 48px) clamp(40px, 6vw, 64px);
    transition: transform var(--ds-dur) var(--ds-ease),
                box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-dropzone:hover {
    transform: translateY(-4px);
    box-shadow: var(--ds-shadow-float), var(--ds-glow-primary);
}
.sft-bt-wrap .sft-bt-dropzone-icon {
    color: var(--sft-primary);
    filter: drop-shadow(0 8px 16px rgba(255,122,61,0.3));
}
.sft-bt-wrap .sft-bt-dropzone-text {
    font-size: var(--ds-text-h3);
    font-weight: var(--ds-fw-black);
    letter-spacing: var(--ds-ls-tight);
    line-height: var(--ds-lh-heading);
    color: var(--sft-text);
}
.sft-bt-wrap .sft-bt-dropzone-sub {
    font-size: var(--ds-text-body);
    color: var(--sft-text-sub);
    line-height: var(--ds-lh-body);
}
.sft-bt-wrap .sft-bt-format-badge {
    border-radius: var(--ds-radius-pill);
    font-weight: var(--ds-fw-bold);
    letter-spacing: var(--ds-ls-wide);
    text-transform: uppercase;
}
.sft-bt-wrap .sft-bt-sample-btn {
    border-radius: var(--ds-radius-pill);
    font-weight: var(--ds-fw-bold);
    letter-spacing: var(--ds-ls-wide);
    transition: transform var(--ds-dur) var(--ds-ease),
                box-shadow var(--ds-dur) var(--ds-ease);
    box-shadow: var(--ds-shadow-sm);
}
.sft-bt-wrap .sft-bt-sample-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--ds-shadow-pop), var(--ds-glow-primary);
}

/* ─────────────────────────────────────────
   3. Summary cards — DS stat-card pattern (大数字 gradient + variant 6 色)
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--ds-space-5);
    margin-bottom: var(--ds-space-8);
}
.sft-bt-wrap .sft-bt-summary-card {
    position: relative;
    padding: clamp(20px, 2.5vw, 32px);
    border-radius: var(--ds-radius-lg);
    background: linear-gradient(180deg, var(--sft-bg-card) 0%, var(--sft-bg-soft) 100%);
    border: 1px solid var(--sft-border);
    box-shadow: var(--ds-shadow-card-3d);
    overflow: hidden;
    isolation: isolate;
    transition: transform var(--ds-dur) var(--ds-ease),
                box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-summary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--ds-shadow-float);
}
.sft-bt-wrap .sft-bt-summary-card .sft-bt-summary-label {
    display: block;
    margin: 0 0 var(--ds-space-3);
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-fw-bold);
    color: var(--sft-text-sub);
    letter-spacing: var(--ds-ls-wide);
    line-height: 1.4;
}
.sft-bt-wrap .sft-bt-summary-card .sft-bt-summary-value {
    display: block;
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: var(--ds-fw-black);
    line-height: 1;
    letter-spacing: var(--ds-ls-tight);
    background: var(--ds-text-gradient-primary);
    -webkit-background-clip: text;
            background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    font-variant-numeric: tabular-nums;
    margin: 0;
}
/* metric-specific gradient variants (= sft-bt-net-profit / pf / dd / winrate / trades / sharpe) */
.sft-bt-wrap .sft-bt-summary-card #sft-bt-net-profit { background: var(--ds-text-gradient-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sft-bt-wrap .sft-bt-summary-card #sft-bt-pf         { background: var(--ds-text-gradient-gold);    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sft-bt-wrap .sft-bt-summary-card #sft-bt-dd         { background: var(--ds-text-gradient-danger);  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sft-bt-wrap .sft-bt-summary-card #sft-bt-winrate    { background: var(--ds-text-gradient-success); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sft-bt-wrap .sft-bt-summary-card #sft-bt-trades     { background: var(--ds-text-gradient-indigo);  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sft-bt-wrap .sft-bt-summary-card #sft-bt-sharpe     { background: var(--ds-text-gradient-teal);    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ─────────────────────────────────────────
   4. Chart card (.sft-calc-card) — DS card pattern
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-calc-card {
    border-radius: var(--ds-radius-lg);
    box-shadow: var(--ds-shadow-card-3d);
    background: var(--sft-bg-card);
    border: 1px solid var(--sft-border);
    transition: box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-calc-card:hover {
    box-shadow: var(--ds-shadow-pop);
}
.sft-bt-wrap .sft-section-title {
    font-size: var(--ds-text-h4);
    font-weight: var(--ds-fw-black);
    letter-spacing: var(--ds-ls-tight);
    line-height: var(--ds-lh-heading);
    color: var(--sft-text);
}

/* ─────────────────────────────────────────
   5. Mini-nav (sticky dots) — DS pill + glass pattern
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-mini-nav {
    border-radius: var(--ds-radius-pill);
    box-shadow: var(--ds-shadow-pop);
    background: var(--ds-glass-bg, rgba(255,255,255,0.85));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--sft-border);
    transition: box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-mini-nav:hover {
    box-shadow: var(--ds-shadow-float);
}
.sft-bt-wrap .sft-bt-mn-dot {
    transition: transform var(--ds-dur) var(--ds-ease),
                background var(--ds-dur) var(--ds-ease),
                box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-mn-dot.active {
    background: var(--sft-primary);
    box-shadow: var(--ds-glow-primary);
    transform: scale(1.3);
}

/* ─────────────────────────────────────────
   6. Sticky summary bar — DS sticky-cta pattern
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-sticky-bar {
    border-radius: var(--ds-radius-pill);
    box-shadow: var(--ds-shadow-pop), 0 0 0 1px rgba(255,255,255,0.5) inset;
    background: var(--ds-glass-bg, rgba(255,255,255,0.85));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--sft-border);
    padding: var(--ds-space-3) var(--ds-space-6);
    font-variant-numeric: tabular-nums;
}
.sft-bt-wrap .sft-bt-sticky-label {
    font-size: var(--ds-text-xs, 12px);
    font-weight: var(--ds-fw-bold);
    color: var(--sft-text-sub);
    letter-spacing: var(--ds-ls-wide);
}
.sft-bt-wrap .sft-bt-sticky-value {
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-fw-black);
    color: var(--sft-text);
}

/* ─────────────────────────────────────────
   7. Insights — DS alert pattern (info / success / warning / danger)
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-insights {
    background: rgba(255,122,61,0.04);
    border-radius: var(--ds-radius-md);
    padding: var(--ds-space-4) var(--ds-space-5);
    border-left: 3px solid var(--sft-primary);
}
.sft-bt-wrap .sft-bt-insights-title {
    font-size: var(--ds-text-h4);
    font-weight: var(--ds-fw-black);
    letter-spacing: var(--ds-ls-tight);
    line-height: var(--ds-lh-heading);
    color: var(--sft-text);
}
.sft-bt-wrap .sft-bt-insight-item {
    border-radius: var(--ds-radius-sm);
    padding: var(--ds-space-3) var(--ds-space-4);
    font-size: var(--ds-text-body);
    line-height: var(--ds-lh-body);
    background: var(--sft-bg-card);
    border: 1px solid var(--sft-border);
    border-left-width: 3px;
    transition: transform var(--ds-dur) var(--ds-ease),
                box-shadow var(--ds-dur) var(--ds-ease);
}
.sft-bt-wrap .sft-bt-insight-item:hover {
    transform: translateX(2px);
    box-shadow: var(--ds-shadow-sm);
}
.sft-bt-wrap .sft-bt-insight-item.is-positive { border-left-color: var(--sft-success, #16a34a); }
.sft-bt-wrap .sft-bt-insight-item.is-negative { border-left-color: var(--sft-error, #ef4444); }
.sft-bt-wrap .sft-bt-insight-item.is-warning  { border-left-color: var(--sft-warning, #eab308); }
.sft-bt-wrap .sft-bt-insight-icon {
    font-size: 18px;
    line-height: 1;
}
.sft-bt-wrap .sft-bt-insight-label {
    font-weight: var(--ds-fw-black);
    color: var(--sft-text);
}

/* ─────────────────────────────────────────
   8. Tables — DS row pattern (trade / time / WF 共通)
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-trade-table,
.sft-bt-wrap .sft-bt-time-table,
.sft-bt-wrap .sft-bt-wf-table {
    border-radius: var(--ds-radius-md);
    overflow: hidden;
    box-shadow: var(--ds-shadow-sm);
    background: var(--sft-bg-card);
    font-variant-numeric: tabular-nums;
}
.sft-bt-wrap .sft-bt-trade-table th,
.sft-bt-wrap .sft-bt-time-table th,
.sft-bt-wrap .sft-bt-wf-table th {
    font-weight: var(--ds-fw-black);
    letter-spacing: var(--ds-ls-wide);
    background: var(--sft-bg-soft);
}
.sft-bt-wrap .sft-bt-trade-table tbody tr,
.sft-bt-wrap .sft-bt-time-table tbody tr,
.sft-bt-wrap .sft-bt-wf-table tbody tr {
    transition: background var(--ds-dur) var(--ds-ease);
}

/* ─────────────────────────────────────────
   9. Verdict card — DS shadow-pop + glow (重視点 visual upgrade)
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-verdict-card {
    border-radius: var(--ds-radius-xl);
    box-shadow: var(--ds-shadow-card-3d), var(--ds-glow-primary);
}
.sft-bt-wrap .sft-bt-verdict-score {
    font-family: var(--ds-font-en, "Inter", sans-serif);
    font-weight: var(--ds-fw-black);
    letter-spacing: var(--ds-ls-tight);
}

/* ─────────────────────────────────────────
   10. Walk-Forward score — DS gradient + glow
   ───────────────────────────────────────── */
.sft-bt-wrap .sft-bt-wf-score {
    border-radius: var(--ds-radius-lg);
    box-shadow: var(--ds-shadow-card-3d);
    background: linear-gradient(180deg, var(--sft-bg-card) 0%, var(--sft-bg-soft) 100%);
}
.sft-bt-wrap .sft-bt-wf-score strong {
    background: var(--ds-text-gradient-primary);
    -webkit-background-clip: text;
            background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    font-weight: var(--ds-fw-black);
}

/* ─────────────────────────────────────────
   11. Reduced motion — 全 DS transition 解除
   ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .sft-bt-wrap .sft-bt-dropzone,
    .sft-bt-wrap .sft-bt-summary-card,
    .sft-bt-wrap .sft-calc-card,
    .sft-bt-wrap .sft-bt-mini-nav,
    .sft-bt-wrap .sft-bt-sticky-bar,
    .sft-bt-wrap .sft-bt-insight-item,
    .sft-bt-wrap .sft-bt-sample-btn {
        transition: none;
    }
    .sft-bt-wrap .sft-bt-dropzone:hover,
    .sft-bt-wrap .sft-bt-summary-card:hover,
    .sft-bt-wrap .sft-bt-sample-btn:hover {
        transform: none;
    }
}

/* ─────────────────────────────────────────
   12. Dark mode override — DS dark token
   ───────────────────────────────────────── */
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-mini-nav,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-sticky-bar {
    background: rgba(30,24,16,0.85);
    border-color: rgba(240,232,221,0.08);
}
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-summary-card,
[data-sft-theme="dark"] .sft-bt-wrap .sft-calc-card,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-wf-score {
    background: linear-gradient(180deg, rgba(42,33,25,0.95), rgba(30,24,16,0.98));
}
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-insight-item {
    background: rgba(30,24,16,0.6);
}
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-trade-table,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-time-table,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-wf-table {
    background: rgba(30,24,16,0.6);
}
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-trade-table th,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-time-table th,
[data-sft-theme="dark"] .sft-bt-wrap .sft-bt-wf-table th {
    background: rgba(42,33,25,0.95);
}