:root {
    --bg: #fafbfc;
    --surface: #ffffff;
    --border: #e4e7ec;
    --border-strong: #d0d5dd;
    --text: #101828;
    --text-muted: #475467;
    --text-subtle: #667085;
    --text-faint: #98a2b3;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-soft: #eef2ff;
    --pos: #027a48;
    --pos-soft: #ecfdf3;
    --neg: #b42318;
    --neg-soft: #fef3f2;
    --long: #175cd3;
    --long-soft: #eff8ff;
    --short: #b42318;
    --short-soft: #fef3f2;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-md: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.10);
  }
  [data-theme="dark"] {
    --bg: #0b1220;
    --surface: #111827;
    --border: #1f2937;
    --border-strong: #374151;
    --text: #f3f4f6;
    --text-muted: #d1d5db;
    --text-subtle: #9ca3af;
    --text-faint: #6b7280;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-soft: #1e1b4b;
    --pos: #34d399;
    --pos-soft: #052e1e;
    --neg: #f87171;
    --neg-soft: #2e0f0f;
    --long: #60a5fa;
    --long-soft: #0f1e3a;
    --short: #f87171;
    --short-soft: #2e0f0f;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 1px 2px rgba(0, 0, 0, 0.3), 0 2px 6px rgba(0, 0, 0, 0.25);
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background:
      radial-gradient(1200px 600px at 80% -100px, rgba(79, 70, 229, 0.08), transparent 60%),
      radial-gradient(800px 500px at -100px 400px, rgba(2, 122, 72, 0.06), transparent 60%),
      var(--bg);
    background-attachment: fixed;
    color: var(--text);
    font-size: 14px; line-height: 1.5; -webkit-font-smoothing: antialiased;
  }
  .container { max-width: 1280px; margin: 0 auto; padding: 32px 28px 64px; }

  .page-header {
    margin-bottom: 28px; padding-bottom: 20px;
    border-bottom: 1px solid var(--border); position: relative;
  }
  .page-header-row {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
  }
  .brand { display: flex; align-items: center; gap: 14px; }
  .brand-mark {
    width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #ec4899 100%);
    color: #fff; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.25),
                0 2px 4px rgba(79, 70, 229, 0.15);
  }
  .brand-mark svg { width: 22px; height: 22px; }
  .brand h1 { font-size: 22px; }
  .theme-toggle {
    flex-shrink: 0;
    width: 38px; height: 38px; border-radius: 50%;
    background: transparent; border: 1px solid var(--border-strong);
    cursor: pointer; font-size: 16px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); font-family: inherit;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
  }
  .theme-toggle:hover {
    background: var(--accent-soft); border-color: var(--accent); color: var(--accent);
  }
  .theme-toggle .theme-icon-dark { display: none; }
  [data-theme="dark"] .theme-toggle .theme-icon-light { display: none; }
  [data-theme="dark"] .theme-toggle .theme-icon-dark { display: inline; }
  .page-header::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -1px;
    height: 2px;
    background: linear-gradient(90deg, #4f46e5, #7c3aed, #ec4899);
    border-radius: 2px;
  }
  .page-header h1 {
    margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.02em;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    display: inline-block;
  }
  .page-header .sub { margin: 4px 0 0; color: var(--text-subtle); font-size: 13px; }

  .section-label { font-size: 11px; font-weight: 600; color: var(--text-subtle); text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 12px; }

  .uploads { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
  .drop {
    display: flex; flex-direction: column; position: relative;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    padding: 28px 24px;
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
    min-height: 160px;
  }
  .drop::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, #4f46e5, #7c3aed, #ec4899);
    border-radius: var(--radius) var(--radius) 0 0;
    opacity: 0; transition: opacity 0.2s;
  }
  .drop:hover::before, .drop.drag::before { opacity: 1; }
  .drop:hover, .drop.drag {
    border-color: var(--accent); background: var(--accent-soft);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.08);
  }
  .drop.has-file { border-style: solid; border-color: var(--pos); background: var(--pos-soft); }
  .drop.has-file::before { background: linear-gradient(90deg, #12b76a, #027a48); opacity: 1; }
  .drop h3 { margin: 0 0 4px; font-size: 14px; font-weight: 600; color: var(--text); letter-spacing: -0.005em; }
  .drop p { margin: 0; color: var(--text-subtle); font-size: 13px; }
  .drop-body { text-align: center; flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 2px; }
  .drop input[type=file] { display: none; }
  .files-list { margin-top: 16px; font-size: 13px; display: flex; flex-direction: column; gap: 6px; }
  .files-list:empty { margin-top: 0; }
  .files-list .item {
    padding: 8px 12px; display: flex; justify-content: space-between; align-items: center;
    background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text); font-size: 13px;
  }
  .files-list .item strong { font-weight: 600; margin-right: 4px; }
  .files-list .rm {
    color: var(--text-subtle); cursor: pointer; font-size: 16px; line-height: 1;
    padding: 2px 6px; border-radius: 4px; transition: color 0.15s, background 0.15s;
  }
  .files-list .rm:hover { color: var(--neg); background: var(--neg-soft); }

  /* Upload card + inline info tooltip */
  .upload-col { display: flex; flex-direction: column; gap: 8px; }
  .info-wrap { position: relative; display: inline-block; margin-left: 6px; vertical-align: middle; }
  .info-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--surface); border: 1px solid var(--border-strong);
    color: var(--text-subtle); font-size: 10px; font-weight: 700;
    font-style: italic; font-family: Georgia, "Times New Roman", serif;
    cursor: pointer; padding: 0; line-height: 1;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
  }
  .info-btn:hover {
    background: var(--accent-soft); border-color: var(--accent); color: var(--accent);
  }
  .help-tooltip {
    position: absolute; top: calc(100% + 8px); left: 0; z-index: 20;
    width: 340px; max-width: 80vw; text-align: left;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 12px 14px;
    box-shadow: 0 6px 18px rgba(16, 24, 40, 0.12);
    white-space: normal;
  }
  .help-tooltip[hidden] { display: none; }
  .help-tooltip::before {
    content: ""; position: absolute; top: -6px; left: 4px;
    width: 10px; height: 10px;
    background: var(--surface);
    border-top: 1px solid var(--border); border-left: 1px solid var(--border);
    transform: rotate(45deg);
  }
  .help-tooltip .help-text {
    display: block; margin: 0 0 10px; font-size: 13px;
    color: var(--text-muted); line-height: 1.5;
  }
  .help-tooltip img {
    display: block; max-width: 100%; height: auto;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
  }

  .panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
  }
  .panel h2 {
    margin: 0 0 16px; font-size: 15px; color: var(--text);
    font-weight: 600; letter-spacing: -0.005em;
    display: flex; align-items: center; gap: 10px;
  }
  .panel-head {
    display: flex; justify-content: space-between; align-items: center;
    gap: 12px; margin-bottom: 16px;
  }
  .panel-head h2 { margin: 0; }
  .btn .btn-icon-svg {
    width: 14px; height: 14px; flex-shrink: 0; margin-right: 6px;
    vertical-align: -2px;
  }
  .btn { display: inline-flex; align-items: center; }
  .panel h2::before {
    content: ""; display: inline-block;
    width: 3px; height: 16px;
    background: linear-gradient(180deg, #4f46e5, #7c3aed);
    border-radius: 2px;
  }
  .panel h2 .count { color: var(--text-subtle); font-weight: 500; margin-left: 4px; }

  .settings-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 16px; align-items: end; }
  .field { display: flex; flex-direction: column; gap: 6px; }
  .field > label {
    font-size: 12px; color: var(--text-muted); font-weight: 500;
  }
  .field select, .field input[type=number] {
    padding: 8px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
    background: var(--surface); color: var(--text); font-size: 13px; height: 38px;
    font-family: inherit; transition: border-color 0.15s, box-shadow 0.15s;
    appearance: none; -webkit-appearance: none;
  }
  .field select {
    width: 100%;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23667085' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
    background-repeat: no-repeat; background-position: right 10px center; background-size: 16px;
    padding-right: 34px;
  }
  .field select:focus, .field input[type=number]:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
  }
  .field.actions { flex-direction: row; gap: 8px; }
  .field.actions .btn { height: 38px; }
  .settings-note {
    font-size: 11px; color: var(--text-faint);
    margin-top: 10px; line-height: 1.4;
  }

  .summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
  .stat {
    padding: 18px; background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
  }
  .stat .lbl {
    font-size: 12px; color: var(--text-subtle); font-weight: 500;
  }
  .stat .val {
    font-size: 22px; font-weight: 600; margin-top: 6px;
    font-variant-numeric: tabular-nums; letter-spacing: -0.01em; color: var(--text);
  }
  .stat .val.pos, .stat .val.pct-good { color: var(--pos); }
  .stat .val.neg, .stat .val.pct-bad { color: var(--neg); }
  .stat .val.pct-amber { color: #b54708; }

  table { width: 100%; border-collapse: collapse; font-size: 13px; }
  th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
  tr:last-child td { border-bottom: none; }
  th {
    font-weight: 500; font-size: 12px; color: var(--text-subtle); letter-spacing: 0;
    text-transform: none; background: var(--bg); border-bottom: 1px solid var(--border);
    padding-top: 10px; padding-bottom: 10px;
  }
  tbody tr:hover td { background: var(--bg); }
  .num { text-align: right; font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
  .pos { color: var(--pos); }
  .neg { color: var(--neg); }
  .muted { color: var(--text-faint); }

  .tag-long, .tag-short {
    display: inline-block; padding: 2px 8px; border-radius: 999px;
    font-size: 11px; font-weight: 500; letter-spacing: 0;
  }
  .tag-long { color: var(--long); background: var(--long-soft); }
  .tag-short { color: var(--short); background: var(--short-soft); }

  .pct-good { color: var(--pos); }
  .pct-amber { color: #b54708; }
  .pct-bad { color: var(--neg); }

  .empty { color: var(--text-faint); padding: 40px; text-align: center; font-size: 13px; }
  .scroll-x { overflow-x: auto; margin: 0 -22px; padding: 0 22px; }

  .btn {
    background: var(--accent); color: white; border: 1px solid var(--accent);
    padding: 8px 16px; border-radius: var(--radius-sm); cursor: pointer;
    font-size: 13px; font-weight: 500; font-family: inherit;
    transition: background 0.15s, border-color 0.15s;
  }
  .btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
  .btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
  .btn.secondary:hover { background: var(--bg); border-color: var(--border-strong); }
  .btn[disabled] {
    opacity: 0.5; cursor: not-allowed; pointer-events: none;
  }
  .btn.loading {
    position: relative; color: transparent !important;
  }
  .btn.loading::after {
    content: ""; position: absolute; top: 50%; left: 50%;
    width: 14px; height: 14px; margin: -7px 0 0 -7px;
    border: 2px solid rgba(255,255,255,0.4); border-top-color: white;
    border-radius: 50%; animation: btn-spin 0.7s linear infinite;
  }
  @keyframes btn-spin { to { transform: rotate(360deg); } }

  .footnote { font-size: 12px; color: var(--text-faint); margin-top: 14px; }

  /* Quick stats bar */
  .quick-stats {
    display: flex; align-items: center; flex-wrap: wrap; gap: 10px 20px;
    padding: 12px 14px; margin-bottom: 16px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
  }
  .quick-stats[hidden] { display: none; }
  .qs-item {
    display: inline-flex; align-items: baseline; gap: 5px;
    padding: 0; border: 0;
  }
  .qs-lbl {
    font-size: 11px; color: var(--text-subtle); font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.4px; white-space: nowrap;
  }
  .qs-val {
    font-size: 13px; font-weight: 600; color: var(--text);
    font-variant-numeric: tabular-nums; white-space: nowrap;
  }
  .qs-val.pos { color: var(--pos); }
  .qs-val.neg { color: var(--neg); }

  /* Direction chips */
  .dir-chips { display: inline-flex; gap: 6px; flex-wrap: wrap; }
  .controls-spacer { flex: 1; }
  .ctrl.compact { font-size: 12px; gap: 4px; }
  .ctrl.compact input[type="checkbox"] { margin: 0; }

  /* Outlier badge */
  .outlier-badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: 999px;
    font-size: 10px; font-weight: 600; letter-spacing: 0.02em;
    background: #fef3c7; color: #92400e;
    border: 1px solid #fde68a;
    margin-right: 6px;
  }
  [data-theme="dark"] .outlier-badge {
    background: #451a03; color: #fcd34d; border-color: #78350f;
  }

  /* Collapsible trade cards */
  .trade-card { cursor: pointer; }
  .trade-card .collapsible { display: block; overflow: hidden; }
  .trade-card.collapsed .collapsible { display: none; }
  .trade-card .compact-meta {
    display: none; gap: 14px; align-items: center;
    font-size: 12px; color: var(--text-subtle); font-variant-numeric: tabular-nums;
    flex-wrap: wrap;
  }
  .trade-card.collapsed .compact-meta { display: inline-flex; }
  .trade-card.collapsed .trade-card-header {
    padding-bottom: 0; margin-bottom: 0; border-bottom: none;
  }
  .compact-meta .cm-v { color: var(--text); font-weight: 500; }
  .compact-meta .cm-v.pos { color: var(--pos); }
  .compact-meta .cm-v.neg { color: var(--neg); }
  .chev {
    display: inline-block; width: 16px; height: 16px;
    color: var(--text-subtle); transition: transform 0.18s;
    flex-shrink: 0; margin-left: 8px;
  }
  .trade-card.collapsed .chev { transform: rotate(-90deg); }

  /* Skeleton loaders */
  @keyframes skel-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }
  .skel {
    background: linear-gradient(90deg, var(--border) 0%, var(--bg) 50%, var(--border) 100%);
    background-size: 200% 100%;
    animation: skel-shimmer 1.4s ease infinite;
    border-radius: 6px; display: block;
  }
  @keyframes skel-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }

  /* Animated number transitions */
  .stat .val, .qs-val {
    transition: color 0.2s ease;
  }
  .stat .val.animate-in, .qs-val.animate-in {
    animation: number-pop 0.35s ease-out;
  }
  @keyframes number-pop {
    0% { transform: scale(0.96); opacity: 0.6; }
    60% { transform: scale(1.02); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
  }

  /* Highlight flash on trade card (from chart click) */
  @keyframes card-flash {
    0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.0); }
    30% { box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.25); }
    100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
  }
  .trade-card.flash { animation: card-flash 1.6s ease-out; }

  /* Empty state / onboarding */
  .empty-state {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
  }
  .empty-state h2 {
    margin: 0 0 12px; font-size: 15px; font-weight: 600;
    color: var(--text); display: flex; align-items: center; gap: 10px;
  }
  .empty-state h2::before {
    content: ""; display: inline-block;
    width: 3px; height: 16px;
    background: linear-gradient(180deg, #4f46e5, #7c3aed);
    border-radius: 2px;
  }
  .empty-state ol {
    list-style: none; margin: 0; padding: 0; counter-reset: steps;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
  }
  .empty-state ol li {
    counter-increment: steps;
    position: relative; padding: 14px 14px 14px 52px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px; color: var(--text-muted); line-height: 1.5;
  }
  .empty-state ol li::before {
    content: counter(steps);
    position: absolute; left: 14px; top: 14px;
    width: 26px; height: 26px; border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff; font-size: 12px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.25);
  }
  .empty-state strong { color: var(--text); font-weight: 600; }
  .empty-state .chip-i {
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--surface); border: 1px solid var(--border-strong);
    color: var(--text-subtle); font-size: 10px; font-weight: 700;
    font-style: italic; font-family: Georgia, "Times New Roman", serif;
    vertical-align: middle;
  }
  .empty-state.hidden { display: none; }
  .empty-state-toggle {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; margin: 0; padding: 0;
    background: transparent; border: 0; cursor: pointer;
    font: inherit; color: inherit; text-align: left;
  }
  .empty-state-toggle h2 { margin: 0 0 12px; }
  .empty-state.collapsed .empty-state-toggle h2 { margin: 0; }
  .empty-state-chevron {
    color: var(--text-subtle); font-size: 20px; line-height: 1;
    margin-bottom: 12px; transition: transform 0.15s;
  }
  .empty-state.collapsed .empty-state-chevron { transform: rotate(-90deg); margin-bottom: 0; }
  .empty-state.collapsed { padding: 14px 20px; }
  .empty-state.collapsed .empty-state-body { display: none; }

  /* Trade sort + symbol filter controls */
  .trade-controls {
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    margin-bottom: 14px; padding: 10px 14px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    position: sticky; top: 0; z-index: 20;
  }
  .trade-controls[hidden] { display: none; }
  .trade-controls .ctrl {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12px; color: var(--text-subtle); font-weight: 500;
  }
  .trade-controls .ctrl select {
    appearance: none; -webkit-appearance: none;
    padding: 6px 30px 6px 10px; border: 1px solid var(--border-strong);
    border-radius: 6px;
    background-color: var(--surface);
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23667085' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
    background-repeat: no-repeat; background-position: right 8px center; background-size: 14px;
    color: var(--text); font-size: 13px; font-family: inherit;
    transition: border-color 0.15s, box-shadow 0.15s;
  }
  .trade-controls .ctrl select:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
  }
  .symbol-chips {
    display: inline-flex; gap: 6px; flex-wrap: wrap;
    padding-left: 14px; border-left: 1px solid var(--border);
  }
  .ctrl-divider {
    display: inline-block; width: 1px; height: 22px;
    background: var(--border); flex-shrink: 0;
  }
  .chip {
    background: var(--bg); border: 1px solid var(--border-strong);
    color: var(--text-subtle); font-size: 12px; font-weight: 500;
    padding: 5px 11px; border-radius: 999px;
    cursor: pointer; transition: background 0.15s, border-color 0.15s, color 0.15s;
    font-family: inherit;
  }
  .chip:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
  .chip.active {
    background: var(--accent); border-color: var(--accent); color: #fff;
  }

  /* Trade debug cards */
  .trade-cards { display: flex; flex-direction: column; gap: 14px; }
  .trade-card {
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--surface); padding: 16px 18px;
  }
  .trade-card-header {
    display: flex; align-items: center; gap: 12px;
    padding-bottom: 12px; margin-bottom: 14px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
  }
  .trade-id { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-right: auto; }
  .trade-id .tid-date { color: var(--text-subtle); font-size: 13px; font-weight: 500; }
  .trade-id .tid-sym { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
  .trade-id .tid-qty { color: var(--text-subtle); font-size: 13px; }
  .trade-drift {
    font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums;
    padding: 4px 10px; border-radius: 999px; line-height: 1;
    background: var(--bg); color: var(--text-subtle);
    border: 1px solid var(--border);
  }
  .trade-drift.pct-good { background: var(--pos-soft); color: var(--pos); border-color: var(--pos-soft); }
  .trade-drift.pct-bad  { background: var(--neg-soft); color: var(--neg); border-color: var(--neg-soft); }
  .trade-legs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .leg {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 12px 14px;
  }
  .leg.good { background: var(--pos-soft); border-color: var(--pos-soft); }
  .leg.bad  { background: var(--neg-soft); border-color: var(--neg-soft); }
  .leg-header {
    font-size: 11px; color: var(--text-subtle);
    text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600;
    margin-bottom: 10px;
  }
  .leg-row {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 3px 0; font-size: 13px; gap: 12px;
  }
  .leg-row .lrl { color: var(--text-subtle); font-size: 12px; }
  .leg-row .lrv { font-variant-numeric: tabular-nums; text-align: right; }
  .leg-row.highlight { margin-top: 4px; padding-top: 6px; border-top: 1px dashed var(--border); font-weight: 500; }
  .trade-footer {
    margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border);
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
  }
  @media (max-width: 640px) {
    .trade-footer { grid-template-columns: repeat(2, 1fr); }
  }
  .fstat .flbl { font-size: 11px; color: var(--text-subtle); font-weight: 500; }
  .fstat .fval { font-size: 14px; font-weight: 500; font-variant-numeric: tabular-nums; margin-top: 2px; }

  @media (max-width: 640px) {
    .trade-legs { grid-template-columns: 1fr; }
  }

  /* Results toolbar: tabs on the left, download button on the right */
  .results-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px; flex-wrap: wrap;
    margin-bottom: 20px;
  }
  .btn.small { padding: 6px 12px; font-size: 12px; }
  .dl-icon { display: inline-block; margin-right: 4px; font-weight: 600; }

  /* Avoid splitting trade cards / chart boxes across PDF pages */
  .trade-card, .chart-box, .stat, .panel { break-inside: avoid; page-break-inside: avoid; }

  /* Tabs — segmented control */
  .tabs {
    display: flex; gap: 4px; width: fit-content;
    background: var(--accent-soft); border: 1px solid var(--border);
    border-radius: 10px; padding: 4px;
  }
  .tab {
    background: transparent; border: none;
    padding: 10px 28px;
    font-size: 14px; font-weight: 500; color: var(--text-subtle);
    cursor: pointer; border-radius: 7px;
    transition: background 0.15s, color 0.15s, box-shadow 0.15s;
    font-family: inherit;
  }
  .tab:hover { color: var(--accent); }
  .tab.active {
    background: var(--accent); color: #fff;
    box-shadow: 0 1px 2px rgba(79, 70, 229, 0.2),
                0 2px 6px rgba(79, 70, 229, 0.25);
  }
  .tab-pane.hidden { display: none; }

  /* Charts */
  .charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .chart-box {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 14px 16px;
  }
  .chart-box h3 {
    margin: 0 0 12px; font-size: 13px; font-weight: 600; color: var(--text);
  }
  .chart-wrap { position: relative; height: 240px; }
  @media (max-width: 768px) {
    .charts-grid { grid-template-columns: 1fr; }
  }

  /* Tablet */
  @media (max-width: 1024px) {
    .container { padding: 24px 20px 48px; }
    .settings-row { grid-template-columns: 1fr 1fr; }
    .field.actions { grid-column: 1 / -1; justify-content: flex-start; }
  }

  /* Mobile */
  @media (max-width: 640px) {
    .container { padding: 20px 14px 40px; }
    .page-header { margin-bottom: 20px; padding-bottom: 16px; }
    .page-header h1 { font-size: 18px; }
    .uploads { grid-template-columns: 1fr; gap: 12px; }
    .drop { min-height: 130px; padding: 22px 18px; }
    .settings-row { grid-template-columns: 1fr; gap: 12px; }
    .field.actions { flex-direction: row; }
    .panel { padding: 16px; }
    .panel h2 { font-size: 14px; }
    .summary { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat { padding: 14px 14px 14px 18px; }
    .stat .val { font-size: 18px; }
    th, td { padding: 10px 12px; }
    .scroll-x { margin: 0 -16px; padding: 0 16px; }
  }

  /* Very small phones */
  @media (max-width: 420px) {
    .summary { grid-template-columns: 1fr; }
  }

  /* ---------- History tab ---------- */
  .history-toolbar {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 16px; flex-wrap: wrap; margin-bottom: 16px;
  }
  .history-sub {
    margin: 4px 0 0; color: var(--text-subtle); font-size: 12.5px;
  }
  .history-actions { display: flex; gap: 8px; flex-wrap: wrap; }
  .history-filter-row {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
    margin: 0 0 14px; padding: 10px 12px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12.5px;
  }
  .history-filter-lbl {
    color: var(--text-subtle); text-transform: uppercase;
    letter-spacing: 0.4px; font-size: 11px; font-weight: 600;
  }
  .history-filter-sep { color: var(--text-faint); }
  .history-filter-row input[type="date"] {
    font: inherit; color: var(--text);
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: 6px; padding: 4px 8px;
  }
  .history-filter-row input[type="date"]:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
  }
  .btn-link {
    background: transparent; border: 0; padding: 4px 6px;
    font: inherit; color: var(--accent); cursor: pointer; border-radius: 4px;
  }
  .btn-link:hover { background: var(--accent-soft); }
  .history-filter-meta {
    margin-left: auto; color: var(--text-subtle);
  }
  .history-list { display: flex; flex-direction: column; gap: 10px; }
  .history-empty {
    padding: 28px 20px; text-align: center; color: var(--text-subtle);
    background: var(--bg); border: 1px dashed var(--border-strong); border-radius: var(--radius);
    font-size: 13px;
  }
  .history-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center; gap: 16px;
    padding: 14px 16px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius);
  }
  .history-row.current {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
  }
  .history-label-col { min-width: 0; }
  .history-day-label {
    display: flex; align-items: baseline; gap: 10px;
    padding: 4px 6px;
  }
  .history-day-title { font-weight: 600; color: var(--text); font-size: 14px; }
  .history-day-syms { color: var(--text-subtle); font-size: 12.5px; }
  .history-label-input::placeholder { color: var(--text-faint); font-weight: 500; }
  .history-label-input:hover { background: var(--bg); }
  .history-label-input:focus {
    outline: none;
    background: var(--surface);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
  }
  .history-meta {
    margin-top: 4px; padding-left: 6px;
    display: flex; flex-wrap: wrap; align-items: center;
    gap: 6px 8px;
    color: var(--text-subtle); font-size: 12px;
  }
  .history-meta .hm-time { font-weight: 500; color: var(--text-muted); }
  .history-meta .hm-dot { color: var(--text-faint); }
  .history-meta .hm-sep {
    flex: 0 0 1px; height: 14px;
    background: var(--border-strong); margin: 0 6px;
  }
  .history-badge {
    flex-shrink: 0;
    padding: 2px 8px;
    border-radius: 999px; font-size: 10.5px; font-weight: 600;
    background: var(--accent-soft); color: var(--accent);
    text-transform: uppercase; letter-spacing: 0.3px;
  }
  /* Trade day-group headers on the Analysis pane */
  .trade-day-group { margin-bottom: 22px; }
  .trade-day-group:last-child { margin-bottom: 0; }
  .trade-day-header {
    position: sticky; top: 58px; z-index: 10;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px 18px;
    padding: 14px 16px 14px 20px; margin: 0 0 10px;
    background: var(--accent-soft);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    cursor: pointer; user-select: none;
    transition: filter 0.15s, box-shadow 0.15s;
    overflow: hidden;
  }
  .trade-day-header::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0;
    width: 4px; background: var(--accent);
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  }
  .trade-day-header:hover { filter: brightness(0.98); box-shadow: var(--shadow-md); }
  [data-theme="dark"] .trade-day-header:hover { filter: brightness(1.15); }
  .trade-day-header .chev { margin-left: 4px; color: var(--accent); }
  .trade-day-group.collapsed .trade-day-cards { display: none; }
  .trade-day-group.collapsed .trade-day-header { margin-bottom: 0; }
  .trade-day-group.collapsed .trade-day-header .chev { transform: rotate(-90deg); }
  .tdh-left { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; flex: 1; }
  .tdh-date { font-weight: 700; color: var(--accent); font-size: 14.5px; letter-spacing: 0.1px; }
  .tdh-syms { color: var(--text-muted); font-size: 12px; font-weight: 500; }
  .tdh-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--text-muted); font-size: 12px; }
  .trade-day-cards { display: flex; flex-direction: column; gap: 10px; }
  .trade-day-group .tid-date { display: none; }

  .hm { display: inline-flex; align-items: baseline; gap: 5px; }
  .hm-lbl { color: var(--text-subtle); font-size: 11px; text-transform: uppercase; letter-spacing: 0.4px; }
  .hm-val { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
  .hm-val.pos { color: var(--pos); }
  .hm-val.neg { color: var(--neg); }
  .history-row-actions { display: flex; gap: 6px; align-items: center; }
  .btn-icon {
    width: 30px; height: 30px; border-radius: 6px;
    background: transparent; border: 1px solid var(--border-strong);
    color: var(--text-muted); font-size: 16px; line-height: 1;
    cursor: pointer; font-family: inherit;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
  }
  .btn-icon:hover { background: var(--neg-soft); border-color: var(--neg); color: var(--neg); }
  @media (max-width: 560px) {
    .history-row { grid-template-columns: 1fr; gap: 10px; }
    .history-row-actions { justify-content: flex-end; }
  }