/* ============================================================
 * EVA · Design Tokens
 * Copy-paste do stávajícího EJS / CSS bez změny architektury.
 * Všechny tokeny jsou pouhé CSS custom properties — žádný build step.
 *
 * Použití:
 *   <body class="theme-dark accent-indigo"> ... </body>
 * nebo nastavit na :root dle preference uživatele.
 * ============================================================ */

:root {
  /* ── Typografie ──────────────────────────────────────────── */
  --font-sans: Manrope, Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: Manrope, Inter, system-ui, sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* ── Brand paleta (mates-ready) ──────────────────────────── */
  --carbon: #101010;
  --lime: #9EFF5B;
  --bone: #F5F3EE;
  --iron: #3A3A38;
  --ash: #A3A09A;

  /* ── Claude Design extension tokens (Track C, 2026-06-02) ─ */
  /* Dark surface elevation (drawer, dock pill, modals na carbon) */
  --carbon-elevated:   #191917;
  --carbon-elevated-2: #232320;
  --hair-dark: rgba(255,255,255,.08);

  /* Light surface elevation (archive cards, settings rows) */
  --bone-2:    #FBFAF6;
  --hair-lite: #E4E0D4;

  /* Lime tints — frosted lime BG za Carbon textem (NIKDY jako primary fill) */
  --lime-12: rgba(158,255,91,.12);
  --lime-18: rgba(158,255,91,.18);

  /* Text alpha na dark surface (carbon BG, bone fg) */
  --ink-60: rgba(245,243,238,.62);
  --ink-40: rgba(245,243,238,.40);

  /* Text scale (rem-agnostic; psáno v px pro jednoduchý retrofit) */
  --fs-xs: 11px;
  --fs-sm: 12px;
  --fs-md: 13px;     /* body default */
  --fs-lg: 15px;
  --fs-xl: 18px;
  --fs-2xl: 22px;
  --fs-3xl: 28px;

  --lh-tight: 1.25;
  --lh-normal: 1.45;
  --lh-relaxed: 1.7;  /* dokumenty / smlouvy */

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semi: 550;
  --fw-bold: 650;

  --tracking-tight: -0.02em;
  --tracking-normal: -0.005em;
  --tracking-wide: 0.06em;   /* labels / eyebrow */

  /* ── Spacing ─────────────────────────────────────────────── */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;

  /* ── Radius ──────────────────────────────────────────────── */
  --r-xs: 6px;
  --r-sm: 8px;
  --r-md: 10px;
  --r-lg: 12px;
  --r-xl: 14px;
  --r-2xl: 16px;
  --r-pill: 999px;

  /* ── Elevation ───────────────────────────────────────────── */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.18);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.32);

  /* ── Motion ──────────────────────────────────────────────── */
  --ease-out: cubic-bezier(0.2, 0.7, 0.3, 1);
  --ease-in-out: cubic-bezier(0.6, 0, 0.3, 1);
  --dur-fast: 120ms;
  --dur-base: 180ms;
  --dur-slow: 260ms;

  /* ── Z-index scale ───────────────────────────────────────── */
  --z-base: 1;
  --z-sticky: 10;
  --z-sheet: 50;
  --z-overlay: 90;
  --z-modal: 100;
  --z-toast: 200;
}

/* ============================================================
 * Semantic theme — DARK (default)
 * ============================================================ */
:root,
.theme-dark {
  --bg-0: #0A0B0F;   /* page background */
  --bg-1: #101219;   /* panel */
  --bg-2: #171923;   /* elevated surface */
  --bg-3: #1E212D;   /* hover/active surface */
  --bg-video: #0A0B0F;

  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --text: #E6E8EE;
  --text-muted: rgba(230,232,238,0.62);
  --text-dim: rgba(230,232,238,0.38);

  --chip: rgba(255,255,255,0.06);

  --success: #3DDC97;
  --success-soft: rgba(61,220,151,0.14);
  --danger: #F55252;
  --danger-soft: rgba(245,82,82,0.14);
  --warn: #F5B451;
  --warn-soft: rgba(245,180,81,0.14);
}

/* ============================================================
 * Semantic theme — LIGHT
 * ============================================================ */
.theme-light {
  --bg-0: #F6F6F4;
  --bg-1: #FFFFFF;
  --bg-2: #FBFBF9;
  --bg-3: #F1F1EE;
  --bg-video: #0A0B0F;

  --border: rgba(11,13,18,0.08);
  --border-strong: rgba(11,13,18,0.14);

  --text: #0B0D12;
  --text-muted: rgba(11,13,18,0.62);
  --text-dim: rgba(11,13,18,0.42);

  --chip: rgba(11,13,18,0.05);

  --success: #059669;
  --success-soft: rgba(5,150,105,0.12);
  --danger: #DC2626;
  --danger-soft: rgba(220,38,38,0.10);
  --warn: #D97706;
  --warn-soft: rgba(217,119,6,0.12);
}

/* ============================================================
 * Accents — vyber JEDEN přepínačem class na <body>
 * Doporučení: indigo (default) — legaltech default.
 * ============================================================ */
:root,
.accent-indigo { --accent: #101010; --accent-soft: rgba(79,70,229,0.14); --accent-contrast: #FFFFFF; }
.accent-blue   { --accent: #2563EB; --accent-soft: rgba(37,99,235,0.14); --accent-contrast: #FFFFFF; }
.accent-teal   { --accent: #0D9488; --accent-soft: rgba(13,148,136,0.14); --accent-contrast: #FFFFFF; }
.accent-violet { --accent: #7C3AED; --accent-soft: rgba(124,58,237,0.14); --accent-contrast: #FFFFFF; }
.accent-amber  { --accent: #D97706; --accent-soft: rgba(217,119,6,0.14); --accent-contrast: #FFFFFF; }

/* ============================================================
 * Base — minimální reset a typografie
 * ============================================================ */
html { box-sizing: border-box; }
*, *::before, *::after { box-sizing: inherit; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  letter-spacing: var(--tracking-normal);
  background: var(--bg-0);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11', 'ss01';
}

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: var(--tracking-tight); margin: 0; }
h1 { font-size: var(--fs-3xl); font-weight: var(--fw-bold); }
h2 { font-size: var(--fs-2xl); font-weight: var(--fw-semi); }
h3 { font-size: var(--fs-xl); font-weight: var(--fw-semi); }

/* Utility "eyebrow" label — section headers, column titles */
.eyebrow {
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ============================================================
 * Primitive component classes (volitelné)
 * ============================================================ */

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 8px 14px;
  border-radius: var(--r-md);
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semi);
  cursor: pointer;
  transition: background var(--dur-fast), border-color var(--dur-fast), transform var(--dur-fast);
  border: 1px solid transparent;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { filter: brightness(1.08); }

.btn-secondary { background: var(--bg-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-3); }

.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--chip); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }

/* Icon-only round button (mic, cam, screen) */
.btn-ctrl {
  width: 48px; height: 48px;
  border-radius: var(--r-xl);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.btn-ctrl:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.btn-ctrl[aria-pressed="true"] { background: rgba(255,255,255,0.10); color: var(--text); }
.btn-ctrl.danger { background: var(--danger); color: #fff; border-color: transparent; }

/* Panels */
.panel {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
}

/* Badges */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border: 1px solid var(--border);
  background: var(--chip);
  color: var(--text-muted);
}
.badge--confirmed { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge--pending   { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge--accent    { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge--danger    { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

/* Chip (session id, quick meta) */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px;
  border-radius: var(--r-pill);
  background: var(--chip);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  font-family: var(--font-mono);
}

/* Avatars */
.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: #fff;
  font-family: var(--font-display);
  font-weight: var(--fw-semi);
  letter-spacing: var(--tracking-tight);
}
.avatar-sm { width: 22px; height: 22px; font-size: 10px; }
.avatar-md { width: 36px; height: 36px; font-size: 14px; }
.avatar-lg { width: 96px; height: 96px; font-size: 36px; }

/* Inputs */
.input, .textarea {
  font-family: inherit;
  font-size: var(--fs-md);
  padding: 10px 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  color: var(--text);
  outline: none;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  width: 100%;
}
.input:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Focus ring — používejte pro a11y všude, kde není :focus už stylovaný */
:where(a, button, [role="button"], input, textarea, select):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* ============================================================
 * Surface mode (Track C U5) — semantic per-section světlé/tmavé
 *
 * Použití:
 *   <body data-section="archive" data-surface-mode="light"> ... </body>
 * JS (surface-toggle.js) nastavuje data-surface-mode podle localStorage
 * per-section preference. data-section informuje JS default mode.
 *
 * Aktuálně toggle UI NENÍ ve topbaru — to wire-up je separátní krok
 * (vyžaduje user OK kvůli UX změně). Tokens jsou připraveny.
 * ============================================================ */
:root {
  /* Default dark surface */
  --surface-bg:     var(--carbon);
  --surface-fg:     var(--bone);
  --surface-accent: var(--lime);
  --surface-hair:   var(--hair-dark);
  --surface-muted:  var(--ink-60);
  --surface-elev:   var(--carbon-elevated);
  --surface-elev-2: var(--carbon-elevated-2);
}

body[data-surface-mode="light"] {
  --surface-bg:     var(--bone);
  --surface-fg:     var(--carbon);
  --surface-accent: var(--lime); /* same, ale per KTD-C6 jen jako fill + carbon obsah */
  --surface-hair:   var(--hair-lite);
  --surface-muted:  var(--iron);
  --surface-elev:   var(--bone-2);
  --surface-elev-2: #FFFFFF;
}

body[data-surface-mode="dark"] {
  --surface-bg:     var(--carbon);
  --surface-fg:     var(--bone);
  --surface-accent: var(--lime);
  --surface-hair:   var(--hair-dark);
  --surface-muted:  var(--ink-60);
  --surface-elev:   var(--carbon-elevated);
  --surface-elev-2: var(--carbon-elevated-2);
}

/* ============================================================
 * Razítko A — kompaktní inline pill chip s úsečkou + § 25d label
 * Použití: kdekoli, kde potřebujeme říct "EVA OVĚŘENO" v řádkovém formátu
 *   (chat ack, audit log row meta, admin meeting detail, e-mail)
 * ============================================================ */
.razitko-a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px 3px 3px;
  background: #fff;
  border: 1.5px solid var(--carbon);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 10.5px;
  color: var(--carbon);
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
  vertical-align: middle;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}
/* Compact varianta — pro úzké kontextovní místa (chat panel, table cells).
   Skryje separator/hash/meta, ponechá jen mark + krátký label. */
.razitko-a.compact { gap: 5px; padding: 2px 8px 2px 2px; font-size: 10px; }
.razitko-a.compact .razitko-a-mark { width: 16px; height: 16px; border-radius: 4px; }
.razitko-a.compact .razitko-a-mark svg { width: 11px; height: 11px; }
.razitko-a.compact .razitko-a-sep,
.razitko-a.compact .razitko-a-hash,
.razitko-a.compact .razitko-a-meta { display: none; }
.razitko-a-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--lime);
  border-radius: 6px;
  flex-shrink: 0;
}
.razitko-a-mark svg { width: 14px; height: 14px; display: block; }
.razitko-a-label { font-weight: 700; }
.razitko-a-sep { color: #9CA3AF; font-weight: 500; margin: 0 -2px; }
.razitko-a-meta { color: #374151; font-weight: 500; }
.razitko-a-hash { font-family: var(--font-mono); font-size: 10.5px; color: #6B7280; font-weight: 500; }

/* ============================================================
 * Keyframes používané v UI
 * ============================================================ */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.85); }
}
@keyframes typingDot {
  0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
  30%           { opacity: 1;    transform: translateY(-2px); }
}
@keyframes speakBar {
  0%, 100% { height: 4px; }
  50%      { height: 12px; }
}

/* Přepínejte @media (prefers-reduced-motion: reduce) { * { animation: none!important; transition: none!important; } } na úrovni aplikace. */

/* ============================================================
 * Scrollbars — decentní, napříč tmavou i světlou variantou
 * ============================================================ */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(128,128,128,0.22);
  border-radius: 5px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: rgba(128,128,128,0.40); background-clip: padding-box; }
