/* ===========================================================
   EDGE ALGO — DESIGN TOKENS
   Dark theme is default (professional trading-terminal aesthetic).
   Light theme overrides via [data-theme="light"].
   =========================================================== */

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

:root {
  /* ---------- Neutral surfaces (dark, default) ---------- */
  --bg-app: #020617;
  --bg-surface: #0F172A;
  --bg-surface-raised: #1E293B;
  --bg-surface-hover: #263349;
  --border-subtle: #1E293B;
  --border-default: #2D3B52;
  --border-strong: #3B4A64;

  --text-primary: #F8FAFC;
  --text-secondary: #B4C0D3;
  --text-muted: #7C8AA5;
  --text-disabled: #4B5872;

  /* ---------- Semantic: profit / loss / neutral ---------- */
  --profit: #22C55E;
  --profit-bg: rgba(34, 197, 94, 0.12);
  --loss: #EF4444;
  --loss-bg: rgba(239, 68, 68, 0.12);
  --flat: #94A3B8;
  --flat-bg: rgba(148, 163, 184, 0.12);

  /* ---------- Risk severity (low / medium / high) ---------- */
  --risk-low: #22C55E;
  --risk-low-bg: rgba(34, 197, 94, 0.12);
  --risk-medium: #F59E0B;
  --risk-medium-bg: rgba(245, 158, 11, 0.12);
  --risk-high: #EF4444;
  --risk-high-bg: rgba(239, 68, 68, 0.12);

  /* ---------- AI / intelligence accent (reserved, exclusive) ---------- */
  --ai-accent: #A78BFA;
  --ai-accent-bg: rgba(167, 139, 250, 0.12);
  --ai-accent-strong: #8B5CF6;

  /* ---------- Status colors ---------- */
  --status-connected: #22C55E;
  --status-disconnected: #EF4444;
  --status-running: #3B82F6;
  --status-paused: #F59E0B;
  --status-validated: #22C55E;
  --status-rejected: #EF4444;

  /* ---------- Brand / primary action ---------- */
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --primary-bg: rgba(59, 130, 246, 0.12);

  /* ---------- Paper trading mode ---------- */
  --paper-mode: #F59E0B;
  --paper-mode-bg: rgba(245, 158, 11, 0.14);

  /* ---------- Typography ---------- */
  --font-ui: 'Fira Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, 'SF Mono', Consolas, monospace;

  --text-display: 2.5rem;
  --text-h1: 1.875rem;
  --text-h2: 1.5rem;
  --text-h3: 1.25rem;
  --text-body: 0.9375rem;
  --text-caption: 0.8125rem;
  --text-numeric-lg: 1.75rem;
  --text-numeric-sm: 0.9375rem;

  /* ---------- Spacing scale (4px base) ---------- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* ---------- Radius / elevation ---------- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.4), 0 0 0 1px var(--border-subtle);
  --shadow-raised: 0 8px 24px rgba(0,0,0,0.5), 0 0 0 1px var(--border-default);
  --shadow-glow-ai: 0 0 0 1px rgba(167,139,250,0.35), 0 0 16px rgba(167,139,250,0.12);

  /* ---------- Motion ---------- */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 220ms;

  /* ---------- Layout ---------- */
  --sidebar-w: 240px;
  --topbar-h: 60px;
  --z-nav: 30;
  --z-dropdown: 40;
  --z-modal: 50;
  --z-toast: 60;
}

[data-theme="light"] {
  --bg-app: #F1F5F9;
  --bg-surface: #FFFFFF;
  --bg-surface-raised: #F8FAFC;
  --bg-surface-hover: #EEF2F8;
  --border-subtle: #E2E8F0;
  --border-default: #CBD5E1;
  --border-strong: #94A3B8;

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #475569;
  --text-disabled: #94A3B8;

  --profit-bg: rgba(22, 163, 74, 0.08);
  --loss-bg: rgba(220, 38, 38, 0.08);
  --flat-bg: rgba(100, 116, 139, 0.1);
  --profit: #16A34A;
  --loss: #DC2626;
  --flat: #64748B;

  --ai-accent-bg: rgba(124, 58, 237, 0.08);
  --ai-accent: #7C3AED;

  --shadow-card: 0 1px 2px rgba(15,23,42,0.06), 0 0 0 1px var(--border-subtle);
  --shadow-raised: 0 12px 28px rgba(15,23,42,0.12), 0 0 0 1px var(--border-default);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: var(--text-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
::selection { background: var(--primary-bg); color: var(--text-primary); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}