/* ==========================================================================
   DESIGN TOKENS & SYSTEM VARIABLES
   Inspired by Reference 1 (Otokogi League) & Reference 2 (Pokemon Card 30th)
   ========================================================================== */

:root {
  /* Fonts */
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Teko', 'Syne', sans-serif;
  --font-serif: 'Zen Old Mincho', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-jp: 'Noto Sans JP', sans-serif;

  /* Spacing Scale */
  --space-2xs: 0.25rem;  /* 4px */
  --space-xs:  0.5rem;   /* 8px */
  --space-sm:  0.75rem;  /* 12px */
  --space-md:  1rem;     /* 16px */
  --space-lg:  1.5rem;   /* 24px */
  --space-xl:  2rem;     /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4.5rem;   /* 72px */
  --space-4xl: 6rem;     /* 96px */

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-instant: 100ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout Container */
  --max-width: 1240px;
  --header-height: 76px;

  /* Z-Index Hierarchy */
  --z-canvas: -1;
  --z-base: 1;
  --z-card: 10;
  --z-header: 1000;
  --z-modal: 2000;
  --z-toast: 3000;
  --z-loader: 9999;
}

/* ==========================================================================
   DARK THEME (Default)
   ========================================================================== */
[data-theme="dark"],
:root:not([data-theme="light"]) {
  color-scheme: dark;

  /* Backgrounds */
  --bg-app: #080c14;
  --bg-surface: #0e1524;
  --bg-surface-elevated: #141f36;
  --bg-glass: rgba(14, 21, 36, 0.75);
  --bg-glass-heavy: rgba(8, 12, 20, 0.88);
  --bg-glass-card: rgba(18, 27, 46, 0.6);
  --bg-glass-hover: rgba(26, 39, 66, 0.8);
  --bg-overlay: rgba(4, 7, 13, 0.82);

  /* Primary Brand Accents */
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-purple: #9d4edd;
  --accent-magenta: #f72585;
  --accent-gold: #ffb703;
  --accent-green: #06d6a0;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #9d4edd 100%);
  --grad-cyan-blue: linear-gradient(135deg, #00f2fe 0%, #0070f3 100%);
  --grad-purple-pink: linear-gradient(135deg, #9d4edd 0%, #f72585 100%);
  --grad-gold: linear-gradient(135deg, #ffb703 0%, #fb8500 100%);
  --grad-surface: linear-gradient(180deg, rgba(20, 31, 54, 0.8) 0%, rgba(10, 16, 28, 0.9) 100%);
  --grad-card-glow: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 242, 254, 0.18) 0%, transparent 65%);
  --grad-holo: linear-gradient(115deg, transparent 20%, rgba(0, 242, 254, 0.25) 40%, rgba(157, 78, 221, 0.3) 55%, transparent 80%);

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #090d16;

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(0, 242, 254, 0.6);
  --border-accent: rgba(0, 242, 254, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
  --shadow-glow-cyan: 0 0 30px rgba(0, 242, 254, 0.35);
  --shadow-glow-purple: 0 0 30px rgba(157, 78, 221, 0.35);
  --shadow-glow-gold: 0 0 30px rgba(255, 183, 3, 0.35);

  /* Interactive Elements */
  --btn-primary-bg: var(--grad-primary);
  --btn-primary-text: #ffffff;
  --badge-bg: rgba(0, 242, 254, 0.12);
  --badge-border: rgba(0, 242, 254, 0.3);
  --badge-text: #00f2fe;
}

/* ==========================================================================
   LIGHT THEME
   ========================================================================== */
[data-theme="light"] {
  color-scheme: light;

  /* Backgrounds */
  --bg-app: #f4f6fa;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f8faff;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-heavy: rgba(244, 246, 250, 0.92);
  --bg-glass-card: rgba(255, 255, 255, 0.8);
  --bg-glass-hover: rgba(255, 255, 255, 0.95);
  --bg-overlay: rgba(15, 23, 42, 0.5);

  /* Primary Brand Accents */
  --accent-cyan: #0088cc;
  --accent-blue: #0066cc;
  --accent-purple: #7928ca;
  --accent-magenta: #d90429;
  --accent-gold: #d97706;
  --accent-green: #059669;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #0088cc 0%, #0066cc 50%, #7928ca 100%);
  --grad-cyan-blue: linear-gradient(135deg, #0088cc 0%, #0052a3 100%);
  --grad-purple-pink: linear-gradient(135deg, #7928ca 0%, #d90429 100%);
  --grad-gold: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  --grad-surface: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
  --grad-card-glow: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 136, 204, 0.12) 0%, transparent 65%);
  --grad-holo: linear-gradient(115deg, transparent 20%, rgba(0, 136, 204, 0.15) 40%, rgba(121, 40, 202, 0.2) 55%, transparent 80%);

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #f8fafc;

  /* Borders & Dividers */
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-card: rgba(15, 23, 42, 0.12);
  --border-focus: rgba(0, 136, 204, 0.6);
  --border-accent: rgba(0, 136, 204, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow-cyan: 0 0 25px rgba(0, 136, 204, 0.2);
  --shadow-glow-purple: 0 0 25px rgba(121, 40, 202, 0.2);
  --shadow-glow-gold: 0 0 25px rgba(217, 119, 6, 0.2);

  /* Interactive Elements */
  --btn-primary-bg: var(--grad-primary);
  --btn-primary-text: #ffffff;
  --badge-bg: rgba(0, 136, 204, 0.08);
  --badge-border: rgba(0, 136, 204, 0.25);
  --badge-text: #0066cc;
}