/* =============================================================================
   SIGIL — design system  ·  "Midnight Azure"
   Dark navy/blue + white. Loaded LAST so :root token overrides win the cascade.
   Single source of truth for color, type, depth, motion and shared treatments.
   Surface files (styles.css, table.css, play-shell.css, play-hud.css) consume
   these tokens; they should not redefine them.
   ========================================================================== */

:root {
  /* ---- base surfaces (deep navy → blue ink) ---- */
  --navy: #070d1a;
  --navy-2: #0a1322;
  --ink: #0e1a2e;
  --ink-2: #142440;
  --ink-3: #1b2f50;
  --ink-4: #27436b;

  /* ---- text (cool white) ---- */
  --paper: #eef4ff;
  --paper-dim: #c2d2e8;
  --muted: #90a4c2;
  --faint: #62748f;

  /* ---- brand accent (azure) ---- */
  --brand: #4da3ff;
  --brand-bright: #8fd0ff;
  --brand-deep: #1f6fc0;
  --brand-soft: rgba(77, 163, 255, 0.16);

  /* ---- WUBRG mana accents (semantic, used sparingly) ---- */
  --mana-w: #eef0ea;
  --mana-u: #4aa3e6;
  --mana-b: #9b86c4;
  --mana-r: #e0655c;
  --mana-g: #46b277;

  /* ---- legacy token remap (existing var() refs inherit the palette) ---- */
  --bg: var(--navy);
  --panel: var(--ink);
  --panel-strong: var(--ink-2);
  --text: var(--paper);
  --line: #22344f;
  --hairline: rgba(120, 170, 230, 0.16);
  --accent: var(--brand);
  --accent-soft: var(--brand-soft);
  --accent-strong: var(--brand-bright);
  --danger: var(--mana-r);
  --success: var(--mana-g);

  /* ---- virtual-table palette unify (table.css defines --tbl-*; azure-ize accents) ---- */
  --tbl-accent: #4da3ff;
  --tbl-glow: #8fd0ff;

  /* ---- glass + bevel ---- */
  --glass: rgba(12, 20, 36, 0.62);
  --glass-strong: rgba(9, 16, 30, 0.84);
  --bevel: inset 0 1px 0 rgba(255, 255, 255, 0.05), inset 0 0 0 1px rgba(120, 170, 230, 0.08);
  --bevel-strong: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 0 0 1px rgba(120, 170, 230, 0.16);

  /* ---- shadows / glow ---- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 10px 28px rgba(2, 8, 20, 0.55);
  --shadow-lg: 0 26px 64px rgba(2, 8, 20, 0.62);
  --shadow: var(--shadow-lg);
  --glow: 0 0 0 1px rgba(77, 163, 255, 0.35), 0 0 26px rgba(77, 163, 255, 0.22);
  --glow-soft: 0 0 30px rgba(77, 163, 255, 0.12);

  /* ---- radii ---- */
  --r-xs: 6px;
  --r-sm: 9px;
  --r-md: 13px;
  --r-card: 14px;
  --r-lg: 18px;
  --r-xl: 26px;
  --r-pill: 999px;

  /* ---- type ---- */
  --font-display: "Cinzel", "Cormorant Garamond", Georgia, serif;
  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Spline Sans Mono", ui-monospace, "SFMono-Regular", "Cascadia Code", monospace;

  /* fluid type scale */
  --fs-100: 0.72rem;
  --fs-200: 0.82rem;
  --fs-300: 0.92rem;
  --fs-400: 1rem;
  --fs-500: 1.18rem;
  --fs-600: clamp(1.3rem, 1.05rem + 1vw, 1.7rem);
  --fs-700: clamp(1.7rem, 1.2rem + 2vw, 2.5rem);
  --fs-800: clamp(2.4rem, 1.4rem + 4vw, 4rem);
  --fs-900: clamp(3rem, 1.5rem + 6.5vw, 6.5rem);
  --tracking-caps: 0.16em;

  /* ---- motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.5, 1);
  --dur-fast: 130ms;
  --dur: 220ms;
  --dur-slow: 460ms;

  /* ---- frost sheen gradient (cool holographic) ---- */
  --foil-gradient: linear-gradient(
    105deg,
    #8fd0ff 0%,
    #eaf4ff 15%,
    #a9eef0 32%,
    #9fb6ff 52%,
    #c7b9ff 68%,
    #8fd0ff 84%,
    #f2f8ff 100%
  );
  --foil-sheen: linear-gradient(
    105deg,
    transparent 30%,
    rgba(234, 244, 255, 0.5) 46%,
    rgba(159, 230, 234, 0.38) 52%,
    transparent 66%
  );
}

/* ---------- base / atmosphere ---------- */
html {
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background-color: var(--navy);
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(77, 163, 255, 0.14), transparent 55%),
    radial-gradient(90% 70% at 12% 8%, rgba(60, 120, 210, 0.12), transparent 50%),
    radial-gradient(90% 70% at 90% 100%, rgba(120, 110, 200, 0.1), transparent 55%),
    linear-gradient(180deg, #070d1a 0%, #091327 52%, #060b16 100%);
  background-attachment: fixed;
}

/* faint grain veil for tactility (very low opacity) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.03;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.app-shell { position: relative; z-index: 1; }

/* ---------- selection / scrollbar / focus ---------- */
::selection {
  background: rgba(77, 163, 255, 0.34);
  color: #fff;
}
* {
  scrollbar-width: thin;
  scrollbar-color: var(--ink-4) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--ink-3), var(--ink-4));
  border-radius: var(--r-pill);
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--brand-deep); background-clip: padding-box; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--brand-bright);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* ---------- typography helpers ---------- */
.font-display { font-family: var(--font-display); }
.font-serif { font-family: var(--font-serif); }

/* cool holographic / frost text */
.foil-text {
  background: var(--foil-gradient);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: foil-shift 8s linear infinite;
}
@keyframes foil-shift {
  to { background-position: 220% 0; }
}

/* sweeping sheen overlay for "premium card" surfaces */
.sheen { position: relative; overflow: hidden; }
.sheen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--foil-sheen);
  background-size: 250% 100%;
  background-position: -60% 0;
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out);
  pointer-events: none;
}
.sheen:hover::before { opacity: 0.8; animation: sheen-sweep 900ms var(--ease-out); }
@keyframes sheen-sweep {
  from { background-position: -60% 0; }
  to { background-position: 160% 0; }
}

/* shared ambient keyframes */
@keyframes float-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: var(--glow-soft); }
  50% { box-shadow: var(--glow); }
}
@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- app nav / Sigil brand (replaces old .top-bar) ---------- */
.app-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 62px;
  padding: 8px 18px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--glass-strong);
  backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--brand-bright);
  flex: 0 0 auto;
}
.brand-seal {
  display: inline-grid;
  place-items: center;
  filter: drop-shadow(0 2px 8px rgba(77, 163, 255, 0.4));
  transition: transform var(--dur-slow) var(--ease-spring);
}
.brand-mark:hover .brand-seal { transform: rotate(72deg); }
.brand-word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.32rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: linear-gradient(180deg, #eaf4ff, var(--brand-bright) 58%, var(--brand));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  padding-right: 0.18em;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
  flex: 1 1 auto;
}
.nav-tabs button {
  position: relative;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 14px;
  transition: color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.nav-tabs button::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur) var(--ease-spring);
}
.nav-tabs button:hover { color: var(--paper); background: rgba(77, 163, 255, 0.08); }
.nav-tabs button.active { color: var(--brand-bright); }
.nav-tabs button.active::after { transform: scaleX(1); }

.nav-actions { display: inline-flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.nav-link {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  transition: color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.nav-link:hover { color: var(--brand-bright); background: rgba(77, 163, 255, 0.08); }
.nav-icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--hairline);
  background: var(--ink-2);
  color: var(--paper-dim);
  font-size: 1.1rem;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.nav-icon:hover { color: var(--brand-bright); border-color: var(--brand); transform: rotate(180deg); }

/* home: the interactive area is full-screen; only the top menu persists (floating over the 3D) */
body.on-home .app-shell { margin: 0; width: 100%; max-width: none; gap: 0; }
body.on-home .app-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  border-radius: 0;
  border-left: 0; border-right: 0; border-top: 0;
  border-bottom: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(7, 13, 26, 0.82), rgba(7, 13, 26, 0.2) 72%, transparent);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

@media (max-width: 720px) {
  .app-nav { flex-wrap: wrap; gap: 8px 12px; padding: 8px 12px; }
  .nav-tabs { order: 3; flex-basis: 100%; margin-left: 0; justify-content: space-between; }
  .nav-tabs button { padding: 8px 8px; font-size: 0.68rem; letter-spacing: 0.06em; }
  .brand-mark { flex: 1 1 auto; }
}

/* ---------- soft "daylight" theme (toggle) ---------- */
body.light {
  --navy: #eef3fb;
  --navy-2: #e6eef9;
  --ink: #ffffff;
  --ink-2: #f3f7fd;
  --ink-3: #e6eef8;
  --ink-4: #d4e0f0;
  --paper: #0f1c30;
  --paper-dim: #2c3e58;
  --muted: #54688a;
  --faint: #7d90ad;
  --line: #d3deee;
  --hairline: rgba(31, 111, 192, 0.22);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.9);
  --brand: #1f6fc0;
  --brand-bright: #2f88e0;
  --brand-deep: #18599c;
  --accent: var(--brand);
  --accent-strong: var(--brand-bright);
  --shadow-md: 0 10px 28px rgba(30, 70, 130, 0.16);
  --shadow-lg: 0 22px 54px rgba(30, 70, 130, 0.2);
  color-scheme: light;
}
body.light {
  background-color: var(--navy);
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(77, 163, 255, 0.16), transparent 55%),
    linear-gradient(180deg, #f4f8fe 0%, #eef3fb 60%, #e6eef9 100%);
}
body.light::after { mix-blend-mode: multiply; opacity: 0.04; }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .foil-text { animation: none; background-position: 0 0; }
}