/* ============================================
   THE WHITECROW FILMS — Design System
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* --- Custom Properties --- */
:root {
  /* Colors — Near-black backgrounds, off-white text */
  --color-black: #000000;
  --color-bg-deep: #050505;
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-bg-elevated: #161616;
  --color-bg-card: #1a1a1a;
  --color-bg-hover: #222222;

  --color-text-primary: #e8e6e1;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  --color-text-dim: #444444;

  --color-accent: #d4c5a9;
  --color-accent-hover: #e0d4be;
  --color-accent-dim: #8a7d65;

  --color-border: #1f1f1f;
  --color-border-light: #2a2a2a;
  --color-border-hover: #333333;

  --color-white: #ffffff;
  --color-error: #e74c3c;
  --color-success: #2ecc71;

  /* Typography */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Instrument Sans', system-ui, sans-serif;

  --text-xs: clamp(0.6875rem, 0.65rem + 0.1vw, 0.75rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.18vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2vw, 2.75rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 3vw, 3.75rem);
  --text-5xl: clamp(2.75rem, 1.5rem + 5vw, 5.5rem);
  --text-6xl: clamp(3.5rem, 1.5rem + 7vw, 8rem);
  --text-hero: clamp(4rem, 2rem + 8vw, 10rem);

  --leading-tight: 1.05;
  --leading-snug: 1.15;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  --tracking-tight: -0.03em;
  --tracking-normal: -0.01em;
  --tracking-wide: 0.08em;
  --tracking-wider: 0.15em;
  --tracking-widest: 0.25em;

  /* Spacing — 8px grid */
  --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;

  --container-max: 1440px;
  --container-wide: 1200px;
  --container-narrow: 800px;
  --container-padding: clamp(1.5rem, 4vw, 4rem);

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);

  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 700ms;
  --duration-slower: 1200ms;

  /* Z-index layers */
  --z-base: 1;
  --z-elevated: 10;
  --z-header: 100;
  --z-overlay: 500;
  --z-modal: 1000;
  --z-ident: 9999;

  /* Grain */
  --grain-opacity: 0.035;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

/* Smooth scroll for GSAP — disable native when GSAP handles it */
html.has-smooth-scroll {
  scroll-behavior: auto;
}

img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

ul,
ol {
  list-style: none;
}

/* --- Film Grain Overlay --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 10000;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
  mix-blend-mode: overlay;
}

/* --- Typography Styles --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Label / eyebrow text */
.label {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.label--accent {
  color: var(--color-accent);
}

/* Display text */
.display-text {
  font-family: var(--font-heading);
  font-size: var(--text-hero);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: var(--tracking-tight);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container--wide {
  max-width: var(--container-wide);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-32);
  position: relative;
}

.section--compact {
  padding-block: var(--space-20);
}

.section--full {
  padding-block: 0;
}

/* --- Divider --- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  border: none;
}

.divider--accent {
  background: linear-gradient(90deg, transparent, var(--color-accent-dim), transparent);
}

/* --- Section Number --- */
.section-number {
  font-family: var(--font-heading);
  font-size: clamp(0.78rem, 0.74rem + 0.15vw, 0.85rem);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent); /* #d4c5a9 - luminous champagne gold */
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  width: fit-content;
  user-select: none;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.85);
}

.section-number::before {
  content: none;
}

.section-number::after {
  content: '';
  display: inline-block;
  width: 48px;
  height: 1px;
  background: var(--color-border-light);
}

/* --- Visibility helpers --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Selection --- */
::selection {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-dim);
}

/* --- Page loading state --- */
body.is-loading {
  overflow: hidden;
}

body.is-loading * {
  animation-play-state: paused !important;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-20);
  }

  .section--compact {
    padding-block: var(--space-12);
  }
}