:root {
    --primary: #4b6cb7;
    --primary-dark: #1f2937;
    --accent: #f59e0b;
    --bg: #f7f8fa;
    --card: #ffffff;
    --ink: #1a1f2c;
    --muted: #6b7280;
    --shadow: 0 4px 10px rgba(0,0,0,.08);
    --price: #2563eb;
    --intrinsic: #16a34a;
    --vol: rgba(245,158,11,.5);
    --up: #16a34a;
    --down: #dc2626;
    --strat-value: #16a34a;
    --strat-momentum: #f59e0b;
    --strat-contrarian: #a855f7;
    --strat-dca: #2563eb;
    --strat-noise: #6b7280;
}

* { box-sizing: border-box; }

body.sim-body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
}

.sim-header {
    background: var(--primary-dark);
    color: #fff;
    padding: 22px 15px;
    text-align: center;
    box-shadow: var(--shadow);
}
.sim-header h1 { margin: 0; font-size: 1.7em; }
.sim-subtitle { margin: 6px 0 0; color: #cbd5e1; font-weight: 500; }

.sim-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 15px;
    display: grid;
    gap: 15px;
}

.panel {
    background: var(--card);
    border-radius: 12px;
    padding: 15px 18px;
    box-shadow: var(--shadow);
    border-left: 6px solid var(--primary);
}
.panel h2 {
    color: var(--primary-dark);
    margin: 0 0 12px;
    font-size: 1.15em;
    border-bottom: 1px dashed #ddd;
    padding-bottom: 8px;
}

/* Controls */
.ctrl-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px 14px;
}
.ctrl-grid label {
    display: flex;
    flex-direction: column;
    font-size: .85em;
    color: var(--muted);
    gap: 4px;
}
.ctrl-grid input {
    padding: 7px 8px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 1em;
    background: #f9fafb;
    color: var(--ink);
}
.ctrl-grid input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

.btn-row { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.btn-row button {
    padding: 8px 14px;
    border: none;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    font-size: .95em;
    cursor: pointer;
    transition: background .15s;
}
.btn-row button:hover:not(:disabled) { background: #3b5896; }
.btn-row button:disabled { background: #cbd5e1; cursor: not-allowed; }
#btn-reset { background: #6b7280; }
#btn-reset:hover { background: #4b5563; }
#btn-news-good { background: var(--up); }
#btn-news-good:hover { background: #128a3d; }
#btn-news-bad { background: var(--down); }
#btn-news-bad:hover { background: #b91c1c; }

.hint { color: var(--muted); font-size: .85em; margin: 10px 0 0; line-height: 1.5; }
.hint b { color: var(--ink); }

/* Stats */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px 12px;
}
.stat {
    background: #f1f5f9;
    border-radius: 8px;
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
}
.stat .lbl { font-size: .75em; color: var(--muted); }
.stat .val {
    font-size: 1.25em;
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: 2px;
}
.stat.wide { grid-column: span 2; }
.stat.wide .val { font-size: 1em; font-family: ui-monospace, monospace; }
.strategy-card .ticker-breakdown { align-items: flex-start; }

/* Chart */
.chart-panel canvas {
    width: 100%;
    height: auto;
    display: block;
    background: #fafcff;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}
.ticker-charts { display: grid; gap: 10px; }
.ticker-wrap {
    display: flex;
    gap: 8px;
    align-items: stretch;
}
.ticker-chart {
    flex: 1;
    min-width: 0;
    height: 200px !important;
    display: block;
}
.hint .up-txt { color: var(--up); }
.hint .down-txt { color: var(--down); }

/* K 線右邊固定 pod：一策略一格，5 格 20% 各占高度 */
.strat-pod {
    flex: 0 0 160px;
    display: grid;
    grid-template-rows: repeat(5, 1fr);
    gap: 4px;
    height: 200px;
}
.pod-slot {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-left: 3px solid var(--strat-color, #6b7280);
    border-radius: 6px;
    padding: 3px 6px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
    opacity: .5;
    transition: opacity .4s, background-color .8s;
    overflow: hidden;
}
.pod-slot.has-trade { opacity: 1; }
.pod-slot.active { animation: pod-flash 1.1s ease-out; }
@keyframes pod-flash {
    0%   { background: #fef3c7; box-shadow: 0 0 0 2px rgba(245,158,11,.8); }
    100% { background: #fff;    box-shadow: 0 0 0 0 rgba(245,158,11,0); }
}
.pod-slot .pod-strat {
    font-size: .72em;
    font-weight: 700;
    color: var(--strat-color, #6b7280);
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pod-slot .pod-act {
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: .75em;
    color: var(--ink);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pod-slot .pod-act .act-buy { color: var(--up); font-weight: 700; }
.pod-slot .pod-act .act-sell { color: var(--down); font-weight: 700; }
.pod-slot .pod-reason {
    font-size: .68em;
    color: var(--muted);
    font-style: italic;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pod-slot .pod-idle {
    font-size: .72em;
    color: #cbd5e1;
    font-style: italic;
}
@media (max-width: 700px) {
    .ticker-wrap { flex-direction: column; }
    .strat-pod { flex: 0 0 auto; height: auto; grid-template-rows: none; grid-template-columns: repeat(5, 1fr); }
}

/* Decision bubbles — 靈感來自麵包模擬器裡的思考泡泡 */
.bubble-panel { border-left-color: var(--accent); }
.bubble-stream {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px 8px;
    max-height: 380px;
    overflow-y: auto;
    padding: 6px 4px 12px;
}
.bubble {
    position: relative;
    background: #fff;
    border: 2px solid var(--strat-color, #6b7280);
    border-radius: 14px;
    padding: 8px 10px 8px 12px;
    font-size: .82em;
    box-shadow: 0 2px 4px rgba(0,0,0,.06);
    animation: bubble-pop .35s ease-out;
}
.bubble::before {
    content: '';
    position: absolute;
    left: 10px;
    bottom: -8px;
    width: 12px;
    height: 12px;
    background: #fff;
    border-right: 2px solid var(--strat-color, #6b7280);
    border-bottom: 2px solid var(--strat-color, #6b7280);
    transform: rotate(45deg);
    border-bottom-right-radius: 3px;
}
@keyframes bubble-pop {
    from { transform: translateY(-6px) scale(.94); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}
.bubble-head {
    display: flex;
    justify-content: space-between;
    font-size: .82em;
    color: var(--muted);
    margin-bottom: 3px;
}
.bubble-strat { color: var(--strat-color, #6b7280); font-weight: 700; }
.bubble-day { font-family: ui-monospace, monospace; }
.bubble-body { font-family: ui-monospace, SFMono-Regular, monospace; color: var(--ink); }
.bubble-body .act-buy { color: var(--up); font-weight: 700; }
.bubble-body .act-sell { color: var(--down); font-weight: 700; }
.bubble-reason { margin-top: 4px; color: var(--muted); font-style: italic; font-size: .92em; }
.legend, .strategy-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .82em;
    color: var(--muted);
    margin-bottom: 8px;
}
.legend .lg-price { color: var(--price); }
.legend .lg-intrinsic { color: var(--intrinsic); }
.legend .lg-vol { color: var(--accent); }

.strategy-legend .lg {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: ui-monospace, monospace;
    color: var(--ink);
}
.strategy-legend .swatch {
    display: inline-block;
    width: 14px;
    height: 4px;
    border-radius: 2px;
}

/* Strategies grid */
.strategies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}
.strategy-card {
    background: #f1f5f9;
    border-radius: 8px;
    padding: 10px 12px;
    border-left: 4px solid var(--primary);
}
.strategy-card .name {
    font-weight: 700;
    color: var(--primary-dark);
    font-size: .95em;
    margin-bottom: 4px;
}
.strategy-card .row {
    display: flex;
    justify-content: space-between;
    font-size: .8em;
    color: var(--muted);
    padding: 2px 0;
}
.strategy-card .row .v { color: var(--ink); font-weight: 500; font-family: ui-monospace, monospace; }
.strategy-card .row .v.up { color: var(--up); }
.strategy-card .row .v.down { color: var(--down); }
.strategy-card.tag-value { border-left-color: var(--strat-value); }
.strategy-card.tag-momentum { border-left-color: var(--strat-momentum); }
.strategy-card.tag-contrarian { border-left-color: var(--strat-contrarian); }
.strategy-card.tag-dca { border-left-color: var(--strat-dca); }
.strategy-card.tag-noise { border-left-color: var(--strat-noise); }

/* Trade details */
.trade-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}
.trade-block {
    background: #f1f5f9;
    border-radius: 8px;
    padding: 8px 10px;
}
.trade-block-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid;
    padding-bottom: 4px;
    margin-bottom: 4px;
}
.trade-block-name { font-weight: 700; font-size: .95em; }
.trade-block-total { font-size: .78em; color: var(--muted); }
.trade-table {
    width: 100%;
    border-collapse: collapse;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .78em;
}
.trade-table th {
    text-align: right;
    color: var(--muted);
    font-weight: 500;
    padding: 3px 6px;
    border-bottom: 1px dotted #cbd5e1;
}
.trade-table th:first-child { text-align: left; }
.trade-table td {
    text-align: right;
    padding: 3px 6px;
    border-bottom: 1px dotted #e5e7eb;
}
.trade-table td:first-child { text-align: left; color: var(--primary-dark); }
.trade-table tr.buy td:nth-child(2) { color: var(--up); font-weight: 700; }
.trade-table tr.sell td:nth-child(2) { color: var(--down); font-weight: 700; }
.trade-table .muted { color: var(--muted); text-align: center; padding: 8px; }

/* Log */
.log {
    max-height: 220px;
    overflow-y: auto;
    background: #f9fafb;
    border-radius: 8px;
    padding: 10px 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .82em;
    line-height: 1.5;
}
.log .entry { border-bottom: 1px dotted #e5e7eb; padding: 4px 0; }
.log .entry:last-child { border-bottom: none; }
.log .day { color: var(--primary-dark); font-weight: 600; }
.log .up { color: var(--up); }
.log .down { color: var(--down); }
.log .news { color: var(--accent); font-weight: 700; }

.sim-footer {
    text-align: center;
    color: var(--muted);
    padding: 10px 5px 30px;
    font-size: .85em;
}
.sim-footer a { color: var(--primary); }

@media (min-width: 700px) {
    .sim-main { padding: 20px; gap: 18px; }
}