/* ==========================================================================
   Argus: Parliamentary Watch — Colors & Type
   Lifted directly from Sino_Tracker/src/index.css (Palantir Foundry OKLCH system)
   + typography tokens from DESIGN.md
   ========================================================================== */

/* =======================================================================
   Local brand fonts (TTFs in ./fonts). Google Fonts used only where we
   don't yet have local files: Geist, Noto Sans TC.
   ======================================================================= */

/* DM Sans — brand primary sans (variable) */
@font-face {
  font-family: 'DM Sans';
  src: url('fonts/DMSans-VariableFont_opsz,wght.ttf') format('truetype-variations');
  font-weight: 100 1000;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('fonts/DMSans-Italic-VariableFont_opsz,wght.ttf') format('truetype-variations');
  font-weight: 100 1000;
  font-style: italic;
  font-display: swap;
}

/* Inter — app source sans, kept as fallback + available for UI (variable) */
@font-face {
  font-family: 'Inter';
  src: url('fonts/InterVariable.ttf') format('truetype-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('fonts/InterVariable-Italic.ttf') format('truetype-variations');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* Instrument Serif — display / report titles */
@font-face {
  font-family: 'Instrument Serif';
  src: url('fonts/InstrumentSerif-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Instrument Serif';
  src: url('fonts/InstrumentSerif-Italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

/* JetBrains Mono — code, timestamps, IDs (static weights) */
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-Regular.ttf') format('truetype');    font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-Italic.ttf')  format('truetype');    font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-Medium.ttf')  format('truetype');    font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-SemiBold.ttf') format('truetype');   font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-Bold.ttf')    format('truetype');    font-weight: 700; font-style: normal; font-display: swap; }

/* Still remote: Geist (data numerics) + Noto Sans TC (zh-TW) */
@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
  /* ----- Palantir Foundry LIGHT theme (OKLCH) ----- */
  --bg-app: oklch(0.976 0.003 264.5);
  --bg-sidebar: oklch(1 0 0);
  --bg-card: oklch(1 0 0);
  --bg-header: oklch(1 0 0);
  --bg-input: oklch(0.976 0.003 264.5);
  --bg-surface: oklch(0.951 0.005 258.3);
  --bg-elevated: oklch(0.951 0.005 258.3);
  --bg-hover: oklch(0.905 0.008 253.9);
  --border-color: oklch(0.88 0.01 252.8);

  --text-primary: oklch(0.245 0.014 253.1);
  --text-secondary: oklch(0.524 0.031 257.1);
  --text-tertiary: oklch(0.524 0.031 257.1);
  --text-muted: oklch(0.524 0.031 257.1);

  --accent-blue: oklch(0.56 0.163 257.6);
  --accent-cyan: oklch(0.664 0.114 191.8);
  --accent-purple: oklch(0.541 0.247 293);
  --accent-red: oklch(0.577 0.215 27.3);

  --status-green: oklch(0.548 0.12 155.2);
  --status-amber: oklch(0.642 0.14 61.8);
  --status-red: oklch(0.579 0.175 22.9);

  --heatmap-0: oklch(0.93 0.005 258);
  --heatmap-1: oklch(0.82 0.08 155);
  --heatmap-2: oklch(0.65 0.12 155);
  --heatmap-3: oklch(0.48 0.14 155);

  /* Sharp corners (institutional) — DO NOT soften */
  --radius: 0.1rem;          /* ~1.6px */
  --radius-sm: 0.06rem;
  --radius-md: 0.08rem;
  --radius-lg: 0.1rem;
  --radius-xl: 0.14rem;

  /* ----- Typography ----- */
  --font-sans: 'DM Sans', 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --font-data: 'Geist', 'DM Sans', ui-sans-serif, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --font-cjk: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;

  /* Type scale (DESIGN.md) */
  --fs-display-lg: 2.25rem;  /* 36 */
  --fs-display-sm: 1.5rem;   /* 24 */
  --fs-heading-lg: 1.25rem;  /* 20 */
  --fs-heading-sm: 1rem;     /* 16 */
  --fs-body: 0.875rem;       /* 14 */
  --fs-body-sm: 0.8125rem;   /* 13 */
  --fs-caption: 0.75rem;     /* 12 */

  /* Spacing (4px base) */
  --space-2xs: 2px;
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
}

.dark {
  /* ----- Palantir Foundry DARK theme (OKLCH) ----- */
  --bg-app: oklch(0.191 0.009 264.3);
  --bg-sidebar: oklch(0.238 0.015 261.6);
  --bg-card: oklch(0.272 0.018 262.2);
  --bg-header: oklch(0.238 0.015 261.6);
  --bg-input: oklch(0.304 0.018 262.2);
  --bg-surface: oklch(0.23 0.012 264.3);
  --bg-elevated: oklch(0.311 0.022 259.4);
  --bg-hover: oklch(0.347 0.025 262.8);
  --border-color: oklch(0.331 0.023 261.2);

  --text-primary: oklch(0.918 0.006 255.5);
  --text-secondary: oklch(0.674 0.02 258.4);
  --text-tertiary: oklch(0.551 0.023 264.4);
  --text-muted: oklch(0.551 0.023 264.4);

  --accent-blue: oklch(0.623 0.188 259.8);
  --accent-cyan: oklch(0.797 0.134 211.5);
  --accent-purple: oklch(0.606 0.219 292.7);
  --accent-red: oklch(0.637 0.208 25.3);

  --status-green: oklch(0.696 0.149 162.5);
  --status-amber: oklch(0.769 0.165 70.1);
  --status-red: oklch(0.637 0.208 25.3);

  --heatmap-0: oklch(0.25 0.01 260);
  --heatmap-1: oklch(0.4 0.08 162);
  --heatmap-2: oklch(0.56 0.13 162);
  --heatmap-3: oklch(0.72 0.16 162);
}

/* ----- Canvas Investigation tokens (scope with .canvas-theme) ----- */
.canvas-theme {
  --canvas-bg: oklch(0.13 0.005 264);
  --canvas-grid: oklch(1 0 0 / 0.03);
  --panel-bg: oklch(0.15 0.008 264 / 0.85);
  --panel-border: oklch(1 0 0 / 0.08);
  --panel-backdrop-blur: 12px;
  --risk-critical: oklch(0.637 0.208 25.3);   /* 1 hop */
  --risk-high:     oklch(0.705 0.191 47.6);   /* 2 hops */
  --risk-medium:   oklch(0.769 0.165 70.1);   /* 3 hops */
  --risk-low:      oklch(0.696 0.149 162.5);  /* 4+ hops */
}

/* ==========================================================================
   Semantic / element styles
   ========================================================================== */

html, body { font-family: var(--font-sans); color: var(--text-primary); background: var(--bg-app); }
:lang(zh) { font-family: var(--font-cjk); line-height: 1.7; }

h1, .h1 { font-family: var(--font-serif); font-size: var(--fs-display-lg); font-weight: 400; line-height: 1.2; letter-spacing: -0.01em; }
h2, .h2 { font-family: var(--font-serif); font-size: var(--fs-display-sm); font-weight: 400; line-height: 1.3; }
h3, .h3 { font-family: var(--font-sans);  font-size: var(--fs-heading-lg); font-weight: 600; line-height: 1.4; }
h4, .h4 { font-family: var(--font-sans);  font-size: var(--fs-heading-sm); font-weight: 600; line-height: 1.5; }
p,  .body { font-family: var(--font-sans); font-size: var(--fs-body); font-weight: 400; line-height: 1.5; }
.body-sm  { font-size: var(--fs-body-sm); line-height: 1.5; }
.caption  { font-size: var(--fs-caption); font-weight: 500; line-height: 1.4; text-transform: none; }
.eyebrow  { font-size: 10px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); }

.data     { font-family: var(--font-data); font-variant-numeric: tabular-nums; font-size: var(--fs-body); }
code, .mono { font-family: var(--font-mono); font-size: var(--fs-body-sm); }

/* Simple reusable atoms */
.chip  { display: inline-flex; align-items: center; gap: 4px; height: 20px; padding: 0 8px; border: 1px solid var(--border-color); border-radius: 9999px; font-size: 12px; font-weight: 500; color: var(--text-primary); background: var(--bg-card); }
.card  { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); }
.btn   { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-radius: 8px; font-size: 14px; font-weight: 500; background: var(--accent-blue); color: #fff; border: 1px solid transparent; cursor: pointer; transition: background 120ms ease-out, transform 60ms ease-out; }
.btn:hover { background: color-mix(in oklch, var(--accent-blue), #000 10%); }
.btn:active { transform: translateY(1px); }
.btn--outline { background: transparent; color: var(--text-primary); border-color: var(--border-color); }
.btn--outline:hover { background: var(--bg-hover); }
.btn--ghost { background: transparent; color: var(--text-primary); border-color: transparent; }
.btn--ghost:hover { background: var(--bg-hover); }
.btn--destructive { background: color-mix(in oklch, var(--status-red), transparent 90%); color: var(--status-red); }