/* ==================== */
/* Design Tokens        */
/* Midnight Gallery     */
/* ==================== */

:root {
  /* ==================== */
  /* Color System         */
  /* ==================== */

  /* Core Colors */
  --color-black: #000000;
  --color-white: #FFFFFF;

  /* Neutral Scale (Cool Grays) */
  --neutral-950: #09090B;
  --neutral-900: #18181B;
  --neutral-800: #27272A;
  --neutral-700: #3F3F46;
  --neutral-600: #52525B;
  --neutral-500: #71717A;
  --neutral-400: #A1A1AA;
  --neutral-300: #D4D4D8;
  --neutral-200: #E4E4E7;
  --neutral-100: #F4F4F5;
  --neutral-50: #FAFAFA;

  /* Accent Colors - Gold */
  --accent-gold: #C9A962;
  --accent-gold-light: #E8D5A3;
  --accent-gold-dark: #9A7B3C;

  /* Functional Colors */
  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;

  /* Overlay Colors */
  --overlay-light: rgba(255, 255, 255, 0.05);
  --overlay-medium: rgba(255, 255, 255, 0.10);
  --overlay-heavy: rgba(255, 255, 255, 0.15);
  --overlay-dark: rgba(0, 0, 0, 0.6);
  --overlay-darker: rgba(0, 0, 0, 0.8);

  /* Semantic Colors (Dark Mode Primary) */
  --bg-primary: var(--neutral-950);
  --bg-secondary: var(--neutral-900);
  --bg-tertiary: var(--neutral-800);
  --text-primary: var(--color-white);
  --text-secondary: var(--neutral-400);
  --text-tertiary: var(--neutral-500);
  --border-primary: var(--neutral-800);
  --border-secondary: var(--neutral-700);

  /* Gradients */
  --gradient-dark: linear-gradient(180deg, #000000 0%, #09090B 100%);
  --gradient-surface: linear-gradient(180deg, #18181B 0%, #09090B 100%);
  --gradient-gold: linear-gradient(135deg, #C9A962 0%, #E8D5A3 50%, #C9A962 100%);
  --gradient-gold-subtle: linear-gradient(135deg, rgba(201,169,98,0.2) 0%, rgba(232,213,163,0.1) 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.8) 100%);
  --gradient-overlay-left: linear-gradient(90deg, rgba(0,0,0,0.7) 0%, transparent 100%);
  --gradient-radial-spotlight: radial-gradient(ellipse at center, rgba(201,169,98,0.08) 0%, transparent 70%);

  /* ==================== */
  /* Typography           */
  /* ==================== */

  /* Font Families */
  --font-display: "Playfair Display", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.5rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 5rem);
  --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 7rem);

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ==================== */
  /* Spacing              */
  /* ==================== */

  --space-0: 0;
  --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;
  --space-32: 8rem;
  --space-40: 10rem;
  --space-48: 12rem;
  --space-64: 16rem;

  /* ==================== */
  /* Layout               */
  /* ==================== */

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  --container-max: 1920px;

  --gutter: clamp(1rem, 2vw, 2rem);
  --section-padding: clamp(4rem, 10vh, 8rem);

  /* ==================== */
  /* Border Radius        */
  /* ==================== */

  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* ==================== */
  /* Shadows              */
  /* ==================== */

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow-gold: 0 0 30px rgba(201, 169, 98, 0.3);
  --shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);

  /* ==================== */
  /* Animation            */
  /* ==================== */

  /* Durations */
  --duration-instant: 50ms;
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 800ms;

  /* Easing Functions */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* ==================== */
  /* Z-Index Scale        */
  /* ==================== */

  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* ==================== */
/* CSS Reset (Modern)   */
/* ==================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
}

/* ==================== */
/* Focus Styles         */
/* ==================== */

:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ==================== */
/* Reduced Motion       */
/* ==================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==================== */
/* Selection            */
/* ==================== */

::selection {
  background-color: var(--accent-gold);
  color: var(--neutral-950);
}