/* nitekabu Loop — theme tokens (derived from prototype/theme.jsx)
 * 2026-05-26 initial port for Blazor WASM PWA implementation.
 */

/* ============ Shared tokens ============ */
:root {
  --nl-font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  --nl-font-latin: "Inter", "SF Pro Text", system-ui, sans-serif;

  /* type scale */
  --nl-h1: 28px;
  --nl-h2: 22px;
  --nl-h3: 17px;
  --nl-body: 14px;
  --nl-caption: 12px;
  --nl-tiny: 11px;
}

/* ============ Dark theme (default) ============ */
:root,
:root[data-theme="dark"] {
  --nl-bg: #0E1116;
  --nl-bg-elev: #141821;
  --nl-surface: #1A1F2A;
  --nl-surface-2: #222836;
  --nl-border: rgba(255, 255, 255, 0.07);
  --nl-border-strong: rgba(255, 255, 255, 0.12);

  --nl-fg: #ECEEF2;
  --nl-fg-muted: #A2A8B4;
  --nl-fg-faint: #5E6573;

  --nl-primary: #5BA88B;
  --nl-primary-soft: rgba(91, 168, 139, 0.14);
  --nl-primary-ring: rgba(91, 168, 139, 0.32);
  --nl-accent: #E3A857;
  --nl-accent-soft: rgba(227, 168, 87, 0.14);

  /* contribution graph intensity 0..4 */
  --nl-grid-0: rgba(255, 255, 255, 0.05);
  --nl-grid-1: rgba(227, 168, 87, 0.22);
  --nl-grid-2: rgba(227, 168, 87, 0.42);
  --nl-grid-3: rgba(227, 168, 87, 0.72);
  --nl-grid-4: #E3A857;

  --nl-sheet: rgba(20, 24, 33, 0.94);
  --nl-scrim: rgba(0, 0, 0, 0.55);
  --nl-danger: #C8635A;
}

/* ============ Light theme ============ */
:root[data-theme="light"] {
  --nl-bg: #FAFAF7;
  --nl-bg-elev: #F3F2EC;
  --nl-surface: #FFFFFF;
  --nl-surface-2: #F6F5F0;
  --nl-border: rgba(20, 24, 33, 0.07);
  --nl-border-strong: rgba(20, 24, 33, 0.14);

  --nl-fg: #1B1F26;
  --nl-fg-muted: #5E6573;
  --nl-fg-faint: #9097A3;

  /* MVP-α tweak: lighten primary slightly from #3F8E73 → #4FA088 (per design audit) */
  --nl-primary: #4FA088;
  --nl-primary-soft: rgba(79, 160, 136, 0.10);
  --nl-primary-ring: rgba(79, 160, 136, 0.24);
  --nl-accent: #C98A3A;
  --nl-accent-soft: rgba(201, 138, 58, 0.10);

  --nl-grid-0: rgba(20, 24, 33, 0.06);
  --nl-grid-1: rgba(201, 138, 58, 0.22);
  --nl-grid-2: rgba(201, 138, 58, 0.46);
  --nl-grid-3: rgba(201, 138, 58, 0.74);
  --nl-grid-4: #C98A3A;

  --nl-sheet: rgba(255, 255, 255, 0.96);
  --nl-scrim: rgba(20, 24, 33, 0.30);
  --nl-danger: #B0463D;
}

/* ============ System color-scheme fallback (no data-theme set) ============ */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --nl-bg: #FAFAF7;
    --nl-bg-elev: #F3F2EC;
    --nl-surface: #FFFFFF;
    --nl-surface-2: #F6F5F0;
    --nl-border: rgba(20, 24, 33, 0.07);
    --nl-border-strong: rgba(20, 24, 33, 0.14);
    --nl-fg: #1B1F26;
    --nl-fg-muted: #5E6573;
    --nl-fg-faint: #9097A3;
    --nl-primary: #4FA088;
    --nl-primary-soft: rgba(79, 160, 136, 0.10);
    --nl-primary-ring: rgba(79, 160, 136, 0.24);
    --nl-accent: #C98A3A;
    --nl-accent-soft: rgba(201, 138, 58, 0.10);
    --nl-grid-0: rgba(20, 24, 33, 0.06);
    --nl-grid-1: rgba(201, 138, 58, 0.22);
    --nl-grid-2: rgba(201, 138, 58, 0.46);
    --nl-grid-3: rgba(201, 138, 58, 0.74);
    --nl-grid-4: #C98A3A;
    --nl-sheet: rgba(255, 255, 255, 0.96);
    --nl-scrim: rgba(20, 24, 33, 0.30);
    --nl-danger: #B0463D;
  }
}

/* ============ Base ============ */
html, body {
  margin: 0;
  padding: 0;
  background: var(--nl-bg);
  color: var(--nl-fg);
  font-family: var(--nl-font-jp);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* { box-sizing: border-box; }

::placeholder { color: var(--nl-fg-faint); }

input, textarea, button, select {
  font-family: inherit;
  color: inherit;
}

textarea { font-family: var(--nl-font-jp); }

/* ============ Animations (from prototype) ============ */
@keyframes nl-pulse {
  0%   { box-shadow: 0 0 0 0 var(--nl-primary-ring), inset 0 0 0 1.5px var(--nl-fg); transform: scale(1); }
  35%  { box-shadow: 0 0 0 10px transparent, inset 0 0 0 1.5px var(--nl-fg); transform: scale(1.4); }
  70%  { transform: scale(1); }
  100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes nl-rise {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes nl-sheet {
  from { transform: translateY(20px) scale(0.98); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

/* ============ Utilities ============ */
.nl-scrollthin::-webkit-scrollbar { display: none; }
.nl-scrollthin { scrollbar-width: none; }

/* Theme transition for data-theme switch */
html { transition: background 240ms ease, color 240ms ease; }