/**
 * Synergy Polymers — Design Tokens
 */

:root {
  --color-white: #ffffff;
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1e293b;
  --color-slate-900: #0f172a;
  --color-slate-950: #020617;
  --color-brand-400: #38bdf8;
  --color-brand-500: #0ea5e9;
  --color-brand-600: #0284c7;
  --color-brand-700: #0369a1;
  --color-accent-400: #fb923c;
  --color-accent-500: #f97316;
  --color-accent-600: #ea580c;
  --color-success: #22c55e;
  --color-error: #ef4444;

  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-display: clamp(2rem, 5vw + 0.5rem, 3.5rem);
  --text-h1: clamp(1.75rem, 4vw + 0.25rem, 2.75rem);
  --text-h2: clamp(1.375rem, 3vw + 0.25rem, 2rem);
  --text-h3: clamp(1.125rem, 2vw + 0.25rem, 1.5rem);

  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --tracking-tight: -0.025em;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --container-max: 1200px;
  --container-narrow: 720px;
  --section-y: clamp(var(--space-16), 8vw, var(--space-24));
  --nav-height: 72px;
  --announce-height: 36px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  --z-sticky: 200;
  --z-dropdown: 100;
  --z-toast: 500;

  --transition-theme: background-color var(--duration-slow) var(--ease-in-out),
    color var(--duration-slow) var(--ease-in-out),
    border-color var(--duration-slow) var(--ease-in-out),
    box-shadow var(--duration-slow) var(--ease-in-out);
}

:root,
html[data-theme="light"] {
  --bg-primary: var(--color-slate-100);
  --bg-secondary: var(--color-white);
  --bg-tertiary: var(--color-slate-50);
  --bg-elevated: var(--color-white);
  --bg-glass: rgba(255, 255, 255, 0.78);
  --bg-glass-border: rgba(255, 255, 255, 0.2);
  --bg-announce: var(--color-slate-900);

  --text-primary: var(--color-slate-900);
  --text-secondary: var(--color-slate-600);
  --text-tertiary: var(--color-slate-400);
  --text-inverse: var(--color-white);
  --text-brand: var(--color-brand-600);

  --border-default: var(--color-slate-200);
  --border-subtle: var(--color-slate-100);
  --border-strong: var(--color-slate-300);

  --accent-primary: var(--color-brand-500);
  --accent-primary-hover: var(--color-brand-600);
  --accent-secondary: var(--color-accent-500);

  --gradient-brand: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%);
  --gradient-hero-scrim: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, transparent 100%);
  --gradient-glow: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.14), transparent);

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 16px 48px rgba(15, 23, 42, 0.14);
  --shadow-glow: 0 0 40px rgba(14, 165, 233, 0.2);

  color-scheme: light;
}

html[data-theme="dark"] {
  --bg-primary: var(--color-slate-950);
  --bg-secondary: var(--color-slate-900);
  --bg-tertiary: #151d2e;
  --bg-elevated: #1a2332;
  --bg-glass: rgba(15, 23, 42, 0.82);
  --bg-glass-border: rgba(255, 255, 255, 0.08);
  --bg-announce: #000000;

  --text-primary: var(--color-slate-100);
  --text-secondary: var(--color-slate-400);
  --text-tertiary: var(--color-slate-500);
  --text-inverse: var(--color-slate-900);
  --text-brand: var(--color-brand-400);

  --border-default: #2d3a52;
  --border-subtle: #1e293b;
  --border-strong: #475569;

  --accent-primary: var(--color-brand-400);
  --accent-primary-hover: var(--color-brand-500);

  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
  --gradient-hero-scrim: linear-gradient(to top, rgba(2, 6, 23, 0.97) 0%, rgba(2, 6, 23, 0.45) 60%, transparent 100%);
  --gradient-glow: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.1), transparent);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.12);

  color-scheme: dark;
}

html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition: var(--transition-theme) !important;
}