/* ==========================================================================
   KPOP PHOTOWALL — DESIGN TOKENS
   Crafted by National Design Studio (Joe Gebbia Collective)
   ========================================================================== */

:root {
  /* Fonts */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Pretendard", "Inter", "Helvetica Neue", sans-serif;
  --font-serif: "Playfair Display", "Cormorant Garamond", "Didot", "Georgia", serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Fira Code", monospace;
  --font-script: "Caveat", "Reenie Beanie", "Nanum Pen Script", cursive;

  /* Spacing Scale */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Border Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --radius-card: 20px;

  /* Transitions */
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 550ms;

  /* Holographic Gradient Stops */
  --holo-rainbow: linear-gradient(
    115deg,
    transparent 0%,
    rgba(255, 0, 128, 0.35) 15%,
    rgba(0, 230, 255, 0.4) 30%,
    rgba(255, 235, 59, 0.4) 50%,
    rgba(128, 0, 255, 0.35) 70%,
    rgba(0, 255, 170, 0.35) 85%,
    transparent 100%
  );
  --holo-silver: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.8) 0%,
    rgba(220, 225, 235, 0.2) 25%,
    rgba(255, 255, 255, 0.9) 50%,
    rgba(200, 210, 230, 0.3) 75%,
    rgba(255, 255, 255, 0.8) 100%
  );
}

/* --------------------------------------------------------------------------
   THEME: DAYLIGHT STUDIO (Default - Warm Bauhaus & Airbnb Gallery)
   -------------------------------------------------------------------------- */
[data-theme="light"], :root {
  --bg-primary: #F7F7F8;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #EEF0F3;
  --bg-canvas: #EAECEF;
  --bg-card: #FFFFFF;
  --bg-card-back: #FFFDF9;
  --bg-glass: rgba(255, 255, 255, 0.78);
  --bg-glass-heavy: rgba(255, 255, 255, 0.92);

  --text-primary: #111418;
  --text-secondary: #575E6A;
  --text-tertiary: #8A92A0;
  --text-inverse: #FFFFFF;

  --accent-primary: #FF2E63;
  --accent-secondary: #7928CA;
  --accent-cyan: #00B4D8;
  --accent-gold: #F5A623;
  --accent-badge: #111418;

  --border-subtle: rgba(17, 20, 24, 0.08);
  --border-card: rgba(17, 20, 24, 0.1);
  --border-glass: rgba(255, 255, 255, 0.6);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 48px -12px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 16px 36px -8px rgba(18, 22, 33, 0.12), 0 2px 8px rgba(18, 22, 33, 0.04);
  --shadow-card-hover: 0 32px 64px -12px rgba(18, 22, 33, 0.22), 0 8px 20px rgba(18, 22, 33, 0.08);

  --pinboard-bg: #E8E5DD;
  --washi-alpha: 0.85;
}

/* --------------------------------------------------------------------------
   THEME: CONCERT MIDNIGHT STAGE (Dark Mode - Apple Pro & Cyber Glow)
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  --bg-primary: #0A0B0E;
  --bg-secondary: #12141A;
  --bg-tertiary: #1A1D26;
  --bg-canvas: #050608;
  --bg-card: #151821;
  --bg-card-back: #181B24;
  --bg-glass: rgba(18, 20, 26, 0.75);
  --bg-glass-heavy: rgba(18, 20, 26, 0.94);

  --text-primary: #F6F7F9;
  --text-secondary: #A0A6B5;
  --text-tertiary: #676D7D;
  --text-inverse: #0A0B0E;

  --accent-primary: #FF3366;
  --accent-secondary: #9D4EDD;
  --accent-cyan: #00F5D4;
  --accent-gold: #FFD166;
  --accent-badge: #F6F7F9;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-glass: rgba(255, 255, 255, 0.15);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px -4px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 24px 56px -10px rgba(0, 0, 0, 0.8);
  --shadow-card: 0 16px 40px -10px rgba(0, 0, 0, 0.7), 0 0 20px rgba(255, 51, 102, 0.1);
  --shadow-card-hover: 0 36px 70px -12px rgba(0, 0, 0, 0.9), 0 0 30px rgba(157, 78, 221, 0.35);

  --pinboard-bg: #111318;
  --washi-alpha: 0.7;
}