/* =============================================================
   SELVAS AI — Volume Normalizer tokens (dark-first audio tool)
   Built on SELVAS Green (#8DC63F) + Blue-Gray (#384F5F)
   ============================================================= */

@font-face {
  font-family: 'Pretendard Variable';
  font-weight: 45 920;
  font-style: normal;
  font-display: swap;
  src: url('fonts/PretendardVariable.woff2') format('woff2-variations');
}
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand */
  --selvas-green: #8DC63F;
  --selvas-blue-gray: #384F5F;

  --green-300: #B0D76D;
  --green-400: #9ECE52;
  --green-500: #8DC63F;
  --green-600: #7AB233;
  --green-700: #5F8C28;

  /* Fonts */
  --font-display: 'Pretendard Variable', 'Rajdhani', system-ui, -apple-system, sans-serif;
  --font-sans:    'Pretendard Variable', system-ui, -apple-system, 'Apple SD Gothic Neo', 'Noto Sans KR', Arial, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, 'Menlo', 'Consolas', monospace;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-pill: 9999px;
}

/* Dark theme (default) — audio-tool palette derived from SELVAS blue-gray */
:root,
[data-theme="dark"] {
  --bg-app:        #0F1620;   /* near-black, blue-gray hue */
  --bg-panel:      #16202C;   /* primary surfaces */
  --bg-panel-2:    #1C2734;   /* nested surfaces */
  --bg-panel-3:    #243140;   /* hover, active rows */
  --bg-track:      #0B1118;   /* deepest — waveform backdrop */
  --bg-elevated:   #1F2C3A;   /* floating elements */

  --border-subtle:  rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.10);
  --border-strong:  rgba(255, 255, 255, 0.18);

  --fg-1: #EAF1F6;        /* primary text */
  --fg-2: #B7C4CF;        /* secondary */
  --fg-3: #7C8B98;        /* tertiary / metadata */
  --fg-4: #56656F;        /* disabled */

  --accent: var(--selvas-green);
  --accent-soft: rgba(141, 198, 63, 0.16);
  --accent-soft-2: rgba(141, 198, 63, 0.08);
  --accent-hover: #9ECE52;
  --accent-press: #7AB233;

  --ref-color: #6FB1FF;       /* reference signal — cool blue */
  --ref-soft: rgba(111, 177, 255, 0.18);
  --target-color: var(--selvas-green);
  --target-soft: rgba(141, 198, 63, 0.20);
  --processed-color: #FFFFFF; /* processed (post-factor) overlay */

  --warning: #F0B040;
  --danger: #FF5C6C;
  --info: #6FB1FF;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.40);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.40);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.55);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.6);

  --grid-line: rgba(255,255,255,0.04);
}

[data-theme="light"] {
  --bg-app:        #F5F7F9;
  --bg-panel:      #FFFFFF;
  --bg-panel-2:    #F7F9FB;
  --bg-panel-3:    #EEF2F6;
  --bg-track:      #F0F3F6;
  --bg-elevated:   #FFFFFF;

  --border-subtle:  rgba(56, 79, 95, 0.08);
  --border-default: rgba(56, 79, 95, 0.16);
  --border-strong:  rgba(56, 79, 95, 0.30);

  --fg-1: #131C22;
  --fg-2: #384F5F;
  --fg-3: #6E8391;
  --fg-4: #9EABB5;

  --accent: var(--selvas-green);
  --accent-soft: rgba(141, 198, 63, 0.18);
  --accent-soft-2: rgba(141, 198, 63, 0.08);
  --accent-hover: #7AB233;
  --accent-press: #5F8C28;

  --ref-color: #2D6FBF;
  --ref-soft: rgba(45, 111, 191, 0.16);
  --target-color: #5F8C28;
  --target-soft: rgba(141, 198, 63, 0.22);
  --processed-color: #131C22;

  --warning: #C8841A;
  --danger: #D64545;
  --info: #3A7BB5;

  --shadow-sm: 0 1px 2px rgba(56, 79, 95, 0.06);
  --shadow-md: 0 2px 8px rgba(56, 79, 95, 0.10);
  --shadow-lg: 0 8px 24px rgba(56, 79, 95, 0.14);
  --shadow-xl: 0 24px 48px rgba(56, 79, 95, 0.18);

  --grid-line: rgba(56, 79, 95, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-app);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#root { height: 100%; }

/* numeric / engineering text */
.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1, "zero" 1;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--accent);
}

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* keyboard kbd chip */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  line-height: 1;
  color: var(--fg-2);
  background: var(--bg-panel-3);
  border: 1px solid var(--border-default);
  border-bottom-width: 2px;
  border-radius: 4px;
}

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

/* selection */
::selection { background: var(--accent-soft); color: var(--fg-1); }

/* utility */
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.gap-1 { gap: 4px; } .gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; } .gap-6 { gap: 24px; }