/* ============================================
 * BACKTEST PAGE
 * File: css/components/backtest.css
 * ============================================
 * Styles for Elliott Wave Backtest page
 * Namespace: .bt-*   Bridge vars: --bt-*
 */

/* ── Variable Bridge ──────────────────────── */
:root {
    --bt-bg:          var(--color-bg-primary);
    --bt-bg-card:     var(--color-bg-secondary);
    --bt-bg-muted:    var(--color-bg-tertiary);
    --bt-text:        var(--color-text-primary);
    --bt-text-sub:    var(--color-text-secondary);
    --bt-text-muted:  var(--color-text-muted);
    --bt-border:      var(--color-border);
    --bt-green:       var(--color-positive);
    --bt-green-bg:    var(--color-positive-bg);
    --bt-red:         var(--color-negative);
    --bt-red-bg:      var(--color-negative-bg);
    --bt-blue:        var(--color-accent-primary);
    --bt-blue-bg:     rgba(59,130,246,0.1);
    --bt-amber:       var(--color-neutral);
    --bt-radius:      8px;
    --bt-radius-sm:   4px;
    --bt-shadow:      0 1px 3px rgba(0,0,0,0.08);
}
[data-theme="dark"] {
    --bt-blue-bg:     rgba(59,130,246,0.15);
}

/* ── Page container ───────────────────────── */
.bt-page {
    padding: 16px 20px;
    min-height: 100%;
    background: var(--bt-bg);
    color: var(--bt-text);
    font-size: 13px;
}

.bt-page-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--bt-border);
}
.bt-page-header h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--bt-text);
    margin: 0;
}
.bt-page-header .bt-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 10px;
    background: var(--bt-blue-bg);
    color: var(--bt-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Tab bar ──────────────────────────────── */
.bt-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--bt-border);
    padding-bottom: 0;
}
.bt-tab {
    padding: 7px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--bt-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    letter-spacing: 0.3px;
}
.bt-tab:hover { color: var(--bt-text); }
.bt-tab.active {
    color: var(--bt-blue);
    border-bottom-color: var(--bt-blue);
}

/* ── Controls / Form ──────────────────────── */
.bt-controls {
    display: grid;
    grid-template-columns: 140px 130px 130px 160px 130px auto;
    gap: 10px;
    align-items: end;
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    padding: 14px 16px;
    margin-bottom: 16px;
}
@media (max-width: 900px) {
    .bt-controls {
        grid-template-columns: 1fr 1fr 1fr;
    }
}
.bt-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.bt-field label {
    font-size: 11px;
    font-weight: 600;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.bt-field input, .bt-field select {
    padding: 6px 10px;
    font-size: 12px;
    background: var(--bt-bg);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius-sm);
    color: var(--bt-text);
    outline: none;
    transition: border-color 0.15s;
    width: 100%;
}
.bt-field input:focus, .bt-field select:focus {
    border-color: var(--bt-blue);
}

/* ── Buttons ──────────────────────────────── */
.bt-btn {
    padding: 7px 18px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    border-radius: var(--bt-radius-sm);
    cursor: pointer;
    transition: opacity 0.15s, transform 0.1s;
    letter-spacing: 0.3px;
    white-space: nowrap;
    height: 32px;
    align-self: flex-end;
}
.bt-btn:hover { opacity: 0.88; }
.bt-btn:active { transform: scale(0.97); }
.bt-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.bt-btn-primary {
    background: var(--bt-blue);
    color: #fff;
}
.bt-btn-secondary {
    background: var(--bt-bg-muted);
    color: var(--bt-text);
    border: 1px solid var(--bt-border);
}

/* ── Loading ──────────────────────────────── */
.bt-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px;
    color: var(--bt-text-muted);
    font-size: 13px;
}
.bt-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--bt-border);
    border-top-color: var(--bt-blue);
    border-radius: 50%;
    animation: bt-spin 0.7s linear infinite;
    flex-shrink: 0;
}
@keyframes bt-spin { to { transform: rotate(360deg); } }

/* ── Metrics bar ──────────────────────────── */
.bt-metrics-bar {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}
@media (max-width: 800px) {
    .bt-metrics-bar { grid-template-columns: repeat(3, 1fr); }
}
.bt-metric-card {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    padding: 12px 14px;
    text-align: center;
}
.bt-metric-card .bt-mc-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}
.bt-metric-card .bt-mc-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--bt-text);
    line-height: 1;
}
.bt-metric-card .bt-mc-value.pos { color: var(--bt-green); }
.bt-metric-card .bt-mc-value.neg { color: var(--bt-red); }
.bt-metric-card .bt-mc-sub {
    font-size: 10px;
    color: var(--bt-text-muted);
    margin-top: 3px;
}
.bt-metric-card .bt-mc-note {
    font-size: 9px;
    font-weight: 400;
    color: var(--bt-accent);
    text-transform: none;
    letter-spacing: 0;
    cursor: help;
    border-bottom: 1px dotted var(--bt-accent);
}

/* ── Chart wrap ───────────────────────────── */
.bt-chart-wrap {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    padding: 14px 16px;
    margin-bottom: 16px;
}
.bt-chart-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--bt-text-sub);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.bt-chart-title .bt-chart-period {
    font-size: 11px;
    color: var(--bt-text-muted);
    font-weight: 400;
}
canvas.bt-canvas {
    width: 100%;
    height: 200px;
    display: block;
    border-radius: 4px;
}

/* ── Result header ────────────────────────── */
.bt-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 8px;
}
.bt-result-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--bt-text);
}
.bt-result-meta {
    font-size: 11px;
    color: var(--bt-text-muted);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.bt-result-meta span { white-space: nowrap; }

/* ── Trades table ─────────────────────────── */
.bt-trades-wrap {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    overflow: hidden;
    margin-bottom: 16px;
}
.bt-trades-title {
    padding: 10px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--bt-text-sub);
    border-bottom: 1px solid var(--bt-border);
    background: var(--bt-bg-muted);
}
.bt-trades-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
.bt-trades-table th {
    padding: 8px 12px;
    text-align: left;
    font-size: 10px;
    font-weight: 600;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    background: var(--bt-bg-muted);
    border-bottom: 1px solid var(--bt-border);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}
.bt-trades-table th:hover { color: var(--bt-text); }
.bt-trades-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--bt-border);
    color: var(--bt-text);
    white-space: nowrap;
}
.bt-trades-table tr:last-child td { border-bottom: none; }
.bt-trades-table tr.bt-win td  { background: rgba(34,197,94,0.04); }
.bt-trades-table tr.bt-loss td { background: rgba(239,68,68,0.04); }
.bt-trades-table .bt-pnl-pos { color: var(--bt-green); font-weight: 600; }
.bt-trades-table .bt-pnl-neg { color: var(--bt-red);   font-weight: 600; }
.bt-setup-badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 700;
    background: var(--bt-blue-bg);
    color: var(--bt-blue);
}
.bt-exit-badge {
    font-size: 10px;
    color: var(--bt-text-muted);
}

/* ── By-setup breakdown ───────────────────── */
.bt-by-setup {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 10px;
    margin-bottom: 16px;
}
.bt-setup-card {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    padding: 10px 12px;
    text-align: center;
}
.bt-setup-card .bt-sc-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.bt-setup-card .bt-sc-win {
    font-size: 16px;
    font-weight: 700;
    color: var(--bt-green);
}
.bt-setup-card .bt-sc-detail {
    font-size: 10px;
    color: var(--bt-text-muted);
    margin-top: 3px;
}

/* ── History table ────────────────────────── */
.bt-history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
.bt-history-table th {
    padding: 8px 12px;
    text-align: left;
    font-size: 10px;
    font-weight: 600;
    color: var(--bt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    background: var(--bt-bg-muted);
    border-bottom: 1px solid var(--bt-border);
}
.bt-history-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--bt-border);
    color: var(--bt-text);
}
.bt-history-table tr:last-child td { border-bottom: none; }
.bt-history-table tr:hover td { background: var(--bt-bg-muted); }
.bt-history-table .bt-pnl-pos { color: var(--bt-green); font-weight: 600; }
.bt-history-table .bt-pnl-neg { color: var(--bt-red);   font-weight: 600; }
.bt-sortable { cursor: pointer; user-select: none; }
.bt-sortable:hover { color: var(--bt-accent) !important; }
.bt-sort-active { color: var(--bt-accent) !important; }

/* ── Scan tier row colors ─────────────────── */
.bt-scan-table tr.bt-tier-green td { background: rgba(34,197,94,0.07); }
.bt-scan-table tr.bt-tier-yellow td { background: rgba(234,179,8,0.07); }
.bt-scan-table tr.bt-tier-red td { background: rgba(239,68,68,0.05); opacity: .75; }
.bt-scan-table tr.bt-tier-green:hover td { background: rgba(34,197,94,0.13); }
.bt-scan-table tr.bt-tier-yellow:hover td { background: rgba(234,179,8,0.13); }
.bt-tier-icon { font-size: 11px; margin-left: 4px; opacity: .8; }

/* ── Sector group header ─────────────────── */
.bt-sector-hdr td {
    background: var(--bt-bg-muted) !important;
    color: var(--bt-accent);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 6px 12px !important;
    border-top: 1px solid var(--bt-border);
}

/* ── Scan legend + skip note ─────────────── */
.bt-scan-legend {
    font-size: 10px;
    color: var(--bt-text-muted);
    margin: 4px 0 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.bt-tier-green-dot, .bt-tier-yellow-dot, .bt-tier-dim-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
}
.bt-tier-green-dot  { background: var(--bt-green); }
.bt-tier-yellow-dot { background: #eab308; }
.bt-tier-dim-dot    { background: var(--bt-text-muted); }

.bt-scan-skip {
    font-size: 10px;
    color: var(--bt-text-muted);
    background: rgba(239,68,68,0.08);
    padding: 2px 8px;
    border-radius: 10px;
}

/* ── Group toggle ────────────────────────── */
.bt-toggle-label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    color: var(--bt-text-muted);
    cursor: pointer;
}
.bt-toggle-label input[type=checkbox] { accent-color: var(--bt-accent); }

/* ── Scan panel ───────────────────────────── */
.bt-scan-panel {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    padding: 20px;
}
.bt-scan-panel textarea {
    width: 100%;
    min-height: 120px;
    padding: 10px;
    font-size: 12px;
    font-family: monospace;
    background: var(--bt-bg);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius-sm);
    color: var(--bt-text);
    resize: vertical;
    outline: none;
    box-sizing: border-box;
}
.bt-scan-panel textarea:focus { border-color: var(--bt-blue); }

/* ── Export bar (ĐƠN MÃ result header) ────── */
.bt-export-bar {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-top: 6px;
}
.bt-btn-export {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--bt-accent);
    background: transparent;
    color: var(--bt-accent);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    line-height: 1.4;
}
.bt-btn-export:hover {
    background: var(--bt-accent);
    color: #fff;
}
.bt-btn-export-json {
    border-color: var(--bt-text-muted);
    color: var(--bt-text-muted);
}
.bt-btn-export-json:hover {
    background: var(--bt-text-muted);
    color: #fff;
}

/* ── History sections ─────────────────────── */
.bt-hist-section {
    margin-bottom: 24px;
}
.bt-hist-section-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    color: var(--bt-text-muted);
    padding: 0 0 8px;
    border-bottom: 1px solid var(--bt-border);
    margin-bottom: 12px;
}

/* ── Session card (collapsible scan group) ── */
.bt-session-card {
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    margin-bottom: 8px;
    overflow: hidden;
}
.bt-session-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}
.bt-session-header:hover { background: var(--bt-bg-muted); }
.bt-session-meta {
    display: flex;
    align-items: center;
    gap: 10px;
}
.bt-session-date {
    font-size: 12px;
    font-weight: 600;
    color: var(--bt-text);
}
.bt-session-badge {
    font-size: 10px;
    background: rgba(var(--bt-accent-rgb, 59,130,246), 0.12);
    color: var(--bt-accent);
    padding: 2px 7px;
    border-radius: 10px;
    font-weight: 600;
}
.bt-session-stats {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    color: var(--bt-text-muted);
}
.bt-session-chevron {
    font-size: 10px;
    opacity: .6;
    margin-left: 6px;
}
.bt-session-body {
    border-top: 1px solid var(--bt-border);
    padding: 0;
}
.bt-session-table {
    font-size: 11px;
}
.bt-session-table th, .bt-session-table td {
    padding: 6px 10px !important;
}

/* ── Single run rows (clickable) ─────────── */
.bt-single-row {
    cursor: pointer;
}
.bt-single-row:hover td {
    background: var(--bt-bg-muted);
}

/* ── Empty / error states ─────────────────── */
.bt-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--bt-text-muted);
    font-size: 13px;
}
.bt-empty .bt-empty-icon { font-size: 32px; margin-bottom: 10px; }
.bt-error {
    padding: 12px 14px;
    background: var(--bt-red-bg);
    border: 1px solid var(--bt-red);
    border-radius: var(--bt-radius);
    color: var(--bt-red);
    font-size: 12px;
    margin-bottom: 14px;
}

/* ── Sub-tab bar (Elliott / Strategy) ────── */
.bt-subtab-bar {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}
.bt-subtab {
    padding: 5px 14px;
    font-size: 11px;
    font-weight: 600;
    color: var(--bt-text-muted);
    background: var(--bt-bg-card);
    border: 1px solid var(--bt-border);
    border-radius: var(--bt-radius);
    cursor: pointer;
    transition: all 0.15s;
}
.bt-subtab:hover { color: var(--bt-text); border-color: var(--bt-blue); }
.bt-subtab.active {
    color: #fff;
    background: var(--bt-blue);
    border-color: var(--bt-blue);
}

/* ── Grade pill bar ──────────────────────── */
.bt-grade-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
    padding: 0 2px;
}
.bt-grade-pill {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 12px;
    border: 1px solid var(--bt-border);
    background: var(--bt-bg-card);
    color: var(--bt-text-sub);
}
.bt-grade-pill.bt-grade-a { color: var(--bt-green); border-color: var(--bt-green); }
.bt-grade-pill.bt-grade-b { color: var(--bt-blue);  border-color: var(--bt-blue); }
.bt-grade-pill.bt-grade-f,
.bt-grade-pill.bt-grade-loss { color: var(--bt-red); border-color: var(--bt-red); }
.bt-grade-pill.bt-grade-win  { color: var(--bt-green); border-color: var(--bt-green); }