/* ============================================================
   Quant Trading Bot — Design System ("Trading Desk" theme)
   ------------------------------------------------------------
   Dark terminal aesthetic, dense glanceable hierarchy.
   Every later UI task (D-2..D-7, E-1) consumes the custom
   properties in :root — do not rename or remove them.
   Offline-friendly: system font stacks only, no webfonts.
   ============================================================ */

/* === Design tokens === */
:root {
    /* Surface */
    --bg-base: #0a0e14;            /* page background, near-black */
    --bg-panel: #11161f;           /* cards / panels */
    --bg-panel-raised: #1a212e;    /* hover states, raised elements */
    --border-subtle: #232b3a;      /* hairline borders */

    /* Text */
    --text-primary: #e6e9ef;
    --text-secondary: #9aa4b2;
    --text-muted: #6b7686;
    --font-mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, "Liberation Mono", monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Semantics */
    --color-pos: #2fbf71;          /* gains / up */
    --color-neg: #ef4444;          /* losses / down */
    --color-neutral: #8b96a8;      /* flat / unchanged */
    --color-accent: #4d9fff;       /* links / CTAs */
    --color-warn: #f5a623;
    --color-danger: #ef4444;

    /* Breaker / status */
    --status-ok: #2fbf71;
    --status-tripped: #ef4444;
    --status-paused: #f5a623;

    /* Scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-panel: 0 1px 3px rgba(0, 0, 0, 0.45);
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 13px;        /* dense base for data-heavy UI */
    --font-size-lg: 15px;
    --font-size-xl: 18px;
    --font-size-2xl: 22px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
}
h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-base); }
a { color: var(--color-accent); }
code { font-family: var(--font-mono); font-size: 0.9em; }

/* === Numbers === */
/* Monospace tabular numerals for all data; color by sign. */
.num {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}
.num.pos { color: var(--color-pos); }
.num.neg { color: var(--color-neg); }
/* Legacy sign classes (app.js emits these) — kept in sync with .num.pos/.neg */
.positive { color: var(--color-pos); }
.negative { color: var(--color-neg); }

/* === Navbar === */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-5);
    height: 52px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-subtle);
}
.nav-brand a { color: var(--text-primary); text-decoration: none; font-weight: 700; font-size: var(--font-size-lg); }
.nav-links { display: flex; gap: var(--space-5); }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: var(--font-size-sm); transition: color 0.15s; }
.nav-links a:hover { color: var(--text-primary); }
.nav-status { display: flex; align-items: center; gap: var(--space-2); }

/* === Badges (status pills) === */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge-ok { background: rgba(47, 191, 113, 0.15); color: var(--status-ok); }
.badge-tripped { background: rgba(239, 68, 68, 0.15); color: var(--status-tripped); }
.badge-paused { background: rgba(245, 166, 35, 0.15); color: var(--status-paused); }

/* Bot run-state pill in the navbar — app.js rewrites this className live. */
.status-badge {
    padding: 3px 12px;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.status-badge.running { background: rgba(47, 191, 113, 0.15); color: var(--status-ok); }
.status-badge.stopped { background: rgba(239, 68, 68, 0.15); color: var(--color-danger); }

/* === Container === */
.container { max-width: 1280px; margin: 0 auto; padding: var(--space-5) var(--space-4); }

/* === Footer === */
.footer {
    text-align: center;
    padding: var(--space-5);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--border-subtle);
}
.footer a { color: var(--color-accent); text-decoration: none; }

/* === Panels (core card unit) === */
.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-panel);
    overflow: hidden;
}
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}
.panel-header h2, .panel-header h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}
.panel-body { padding: var(--space-4); }

/* === Dashboard grid scaffold === */
.grid-dashboard {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-4);
}
.grid-dashboard > * { grid-column: span 12; min-width: 0; }
.grid-dashboard > .span-6 { grid-column: span 6; }
.grid-dashboard > .span-4 { grid-column: span 4; }
.grid-dashboard > .span-8 { grid-column: span 8; }

/* === Ticker strip (top-of-dashboard symbol/price marquee) === */
.ticker-strip {
    overflow: hidden;
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    margin-bottom: var(--space-4);
}
.ticker-track {
    display: inline-flex;
    gap: var(--space-6);
    white-space: nowrap;
    padding: var(--space-2) var(--space-4);
    animation: ticker-scroll 30s linear infinite;
}
.ticker-strip:hover .ticker-track { animation-play-state: paused; }
.ticker-item { display: inline-flex; gap: var(--space-2); align-items: baseline; }
.ticker-symbol { color: var(--text-secondary); font-size: var(--font-size-sm); font-weight: 600; }
.ticker-price { color: var(--text-primary); font-size: var(--font-size-sm); }
@keyframes ticker-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* === Stat cards (big glanceable metrics) === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}
.stat-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    box-shadow: var(--shadow-panel);
    padding: var(--space-4);
}
.stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.stat-value {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-top: var(--space-1);
}
.stat-sub { font-size: var(--font-size-sm); color: var(--text-muted); font-weight: 400; }
.stat-delta { font-size: var(--font-size-sm); font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.stat-delta.pos { color: var(--color-pos); }
.stat-delta.neg { color: var(--color-neg); }
.stat-card.positive .stat-value { color: var(--color-pos); }
.stat-card.negative .stat-value { color: var(--color-neg); }

/* === Wizard === */
.wizard { max-width: 800px; margin: 0 auto; }
.wizard-header { text-align: center; margin-bottom: var(--space-5); }
.wizard-header h1 { margin-bottom: var(--space-2); }
.wizard-header p { color: var(--text-secondary); }

.wizard-progress {
    display: flex; justify-content: space-between; margin-bottom: var(--space-5);
    position: relative;
}
.wizard-progress::before {
    content: ''; position: absolute; top: 16px; left: 0; right: 0;
    height: 2px; background: var(--border-subtle);
}
.progress-step {
    display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
    position: relative; z-index: 1;
}
.step-num {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 50%;
    background: var(--bg-panel); border: 2px solid var(--border-subtle);
    color: var(--text-muted); font-weight: 700; font-size: var(--font-size-sm);
}
.progress-step.active .step-num { border-color: var(--color-accent); color: var(--color-accent); }
.progress-step.done .step-num { background: var(--status-ok); border-color: var(--status-ok); color: #fff; }
.step-label { font-size: var(--font-size-xs); color: var(--text-muted); }
.progress-step.active .step-label { color: var(--text-primary); }

.wizard-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-panel);
    padding: var(--space-5);
}
.wizard-card h2 { margin-bottom: var(--space-2); }
.wizard-card p { color: var(--text-secondary); margin-bottom: var(--space-3); }
.wizard-card ul { margin-left: var(--space-5); margin-bottom: var(--space-3); color: var(--text-secondary); }
.wizard-card li { margin-bottom: var(--space-1); }

.wizard-actions {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: var(--space-5); gap: var(--space-3);
}

/* === Forms === */
.form-stack { display: flex; flex-direction: column; gap: var(--space-4); }
.form-row { display: flex; gap: var(--space-3); }
.form-group { display: flex; flex-direction: column; gap: var(--space-1); flex: 1; }
.form-group label { font-weight: 600; font-size: var(--font-size-sm); color: var(--text-secondary); }
.form-group input, .form-group select, .form-group textarea {
    background: var(--bg-base); border: 1px solid var(--border-subtle); color: var(--text-primary);
    padding: var(--space-2) var(--space-3); border-radius: var(--radius); font-size: var(--font-size-base);
    font-family: var(--font-sans);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--color-accent);
}
.form-group textarea { font-family: var(--font-mono); font-size: var(--font-size-sm); }
.form-group small { color: var(--text-muted); font-size: var(--font-size-xs); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }

/* Choice cards */
.choice-card {
    display: flex; flex-direction: column; gap: var(--space-1); padding: var(--space-3);
    border: 2px solid var(--border-subtle); border-radius: var(--radius); cursor: pointer;
    transition: border-color 0.15s; background: var(--bg-base);
}
.choice-card:hover { border-color: var(--color-accent); }
.choice-card.selected { border-color: var(--color-accent); background: rgba(77, 159, 255, 0.06); }
.choice-card input { display: none; }
.choice-title { font-weight: 700; font-size: var(--font-size-base); }
.choice-desc { font-size: var(--font-size-sm); color: var(--text-muted); }
.choice-card.full { margin-bottom: var(--space-2); }

/* === Callouts === */
.callout {
    padding: var(--space-3); border-radius: var(--radius); margin: var(--space-3) 0;
    font-size: var(--font-size-sm);
}
.callout.info { background: rgba(77, 159, 255, 0.1); border: 1px solid rgba(77, 159, 255, 0.3); }
.callout.warning { background: rgba(245, 166, 35, 0.1); border: 1px solid rgba(245, 166, 35, 0.3); }
.callout a { color: var(--color-accent); }

/* === Buttons === */
.btn {
    padding: var(--space-2) var(--space-4); border-radius: var(--radius); border: 1px solid transparent;
    cursor: pointer; font-weight: 600; font-size: var(--font-size-sm);
    text-decoration: none; display: inline-block;
    transition: background 0.15s, border-color 0.15s;
    background: var(--bg-panel-raised); color: var(--text-primary);
    font-family: var(--font-sans);
}
.btn:hover { border-color: var(--border-subtle); filter: brightness(1.15); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-secondary { background: var(--bg-panel-raised); color: var(--text-primary); }
.btn-success { background: var(--color-pos); color: #fff; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-warning { background: var(--color-warn); color: #111; }
.btn-large { padding: var(--space-3) var(--space-6); font-size: var(--font-size-lg); }
.btn.hidden { display: none; }

/* === Dashboard === */
.control-bar {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: var(--space-5);
}
.control-left { display: flex; align-items: center; gap: var(--space-3); }
.control-right { display: flex; gap: var(--space-2); }
.exchange-tag {
    background: var(--bg-panel); padding: 3px 10px; border-radius: var(--radius-sm);
    font-size: var(--font-size-sm); color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
}

/* Chart */
.chart-container { position: relative; }
#equity-chart { width: 100%; max-width: 100%; }
.chart-placeholder {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    color: var(--text-muted); font-size: var(--font-size-sm);
}

/* === Data tables (dense, tabular numerals, sticky header) === */
.section { margin-bottom: var(--space-5); }
.section h2 { margin-bottom: var(--space-3); }
.data-table {
    width: 100%; border-collapse: collapse; background: var(--bg-panel);
    border-radius: var(--radius); overflow: hidden;
}
.data-table th, .data-table td {
    padding: var(--space-2) var(--space-3); text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}
.data-table th {
    position: sticky; top: 0;
    background: var(--bg-panel-raised);
    font-size: var(--font-size-xs); text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--text-muted);
}
.data-table td {
    font-size: var(--font-size-sm);
    font-variant-numeric: tabular-nums;
}
.data-table tbody tr:hover { background: var(--bg-panel-raised); }
.empty-row td { text-align: center; color: var(--text-muted); padding: var(--space-5); }
.link-small { font-size: var(--font-size-sm); color: var(--color-accent); text-decoration: none; font-weight: 400; margin-left: var(--space-3); }

.side-buy { color: var(--color-pos); font-weight: 600; }
.side-sell { color: var(--color-neg); font-weight: 600; }
.reason-tag {
    background: var(--bg-base); padding: 2px 8px; border-radius: var(--radius-sm);
    font-size: var(--font-size-xs); color: var(--text-secondary);
    font-family: var(--font-mono);
}

/* Review */
.review-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); margin-bottom: var(--space-4);
}
.review-section { background: var(--bg-base); padding: var(--space-3); border-radius: var(--radius); }
.review-section h3 { margin-bottom: var(--space-2); color: var(--color-accent); }
.review-section dl { display: grid; grid-template-columns: auto 1fr; gap: var(--space-1) var(--space-3); }
.review-section dt { color: var(--text-muted); font-size: var(--font-size-sm); }
.review-section dd { font-size: var(--font-size-sm); }

/* Settings */
.config-display {
    background: var(--bg-base); border: 1px solid var(--border-subtle);
    border-radius: var(--radius); padding: var(--space-3); overflow-x: auto;
}
.config-display pre { font-family: var(--font-mono); font-size: var(--font-size-sm); color: var(--text-secondary); }
.actions-row { display: flex; gap: var(--space-3); align-items: center; margin-top: var(--space-3); }

/* === Auth pages === */
.auth-page {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: var(--bg-base);
}
.auth-page .container { max-width: none; padding: 0; display: contents; }
.auth-container { width: 100%; max-width: 400px; padding: var(--space-4); }
.auth-card {
    background: var(--bg-panel); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-panel);
    padding: var(--space-6); text-align: center;
}
.auth-card h1 { margin-bottom: var(--space-2); }
.auth-card h2 { margin-bottom: var(--space-5); color: var(--text-secondary); font-weight: 400; }
.auth-form { display: flex; flex-direction: column; gap: var(--space-3); }
.auth-form .form-group { text-align: left; }
.auth-error { color: var(--color-danger); margin: 0 0 var(--space-3); font-size: var(--font-size-sm); }
.form-error { color: var(--color-danger); margin: 0 0 var(--space-3); font-size: var(--font-size-sm); }
.auth-hint { margin-top: var(--space-3); font-size: var(--font-size-sm); color: var(--text-muted); }
.auth-hint a { color: var(--color-accent); text-decoration: none; }
.btn-full { width: 100%; text-align: center; }

/* === Navbar with auth === */
.nav-user {
    display: flex; align-items: center; gap: var(--space-2);
}
.nav-user-info {
    text-align: right; font-size: var(--font-size-sm);
}
.nav-user-email { color: var(--text-primary); font-weight: 600; display: block; }
.nav-user-role { color: var(--text-muted); font-size: var(--font-size-xs); text-transform: uppercase; }
.btn-logout {
    background: transparent; border: 1px solid var(--border-subtle); color: var(--text-secondary);
    padding: 3px 12px; border-radius: var(--radius-sm); font-size: var(--font-size-sm); cursor: pointer;
    text-decoration: none; display: inline-block;
}
.btn-logout:hover { border-color: var(--color-danger); color: var(--color-danger); }
.nav-admin-link { color: var(--text-secondary); text-decoration: none; }

/* === Admin panel === */
.admin-section { margin-bottom: var(--space-5); }
.admin-section h2 { margin-bottom: var(--space-3); }
.role-badge {
    display: inline-block; padding: 2px 8px; border-radius: var(--radius-sm);
    font-size: var(--font-size-xs); font-weight: 600; text-transform: uppercase;
}
.role-badge.admin { background: rgba(239, 68, 68, 0.15); color: var(--color-danger); }
.role-badge.trader { background: rgba(77, 159, 255, 0.15); color: var(--color-accent); }
.role-badge.viewer { background: rgba(139, 150, 168, 0.15); color: var(--color-neutral); }

/* === Responsive === */
@media (max-width: 900px) {
    .grid-dashboard > .span-6,
    .grid-dashboard > .span-4,
    .grid-dashboard > .span-8 { grid-column: span 12; }
}
@media (max-width: 768px) {
    .navbar { padding: 0 var(--space-3); }
    .nav-links { gap: var(--space-3); }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .review-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
}

/* === Explainer system (E-1) === */
.explain-icon {
    display: inline-block; margin-left: var(--space-1); cursor: pointer;
    color: var(--text-muted); font-size: var(--font-size-xs); line-height: 1;
    user-select: none;
}
.explain-icon:hover, .explain-icon:focus { color: var(--color-accent); outline: none; }
.explain-popover {
    position: absolute; z-index: 1000; max-width: 320px;
    background: var(--bg-panel-raised); border: 1px solid var(--border-subtle);
    border-radius: var(--radius); box-shadow: var(--shadow-panel);
    padding: var(--space-3); font-size: var(--font-size-sm); color: var(--text-secondary);
}
.explain-popover-title { font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-1); }
.explain-popover-body { line-height: 1.45; }
.explain-popover-code {
    margin-top: var(--space-2); font-family: var(--font-mono);
    font-size: var(--font-size-xs); color: var(--text-muted);
}

/* === Glossary / Learn pages (E-1/E-2) === */
.glossary-entry { margin-bottom: var(--space-3); }
.glossary-entry h3 { margin-bottom: var(--space-1); }
.glossary-code { font-family: var(--font-mono); font-size: var(--font-size-xs); color: var(--text-muted); }
.learn-step { counter-increment: step; }
.learn-step h2::before {
    content: counter(step) ". ";
    color: var(--color-accent);
}
.learn-steps { counter-reset: step; }