/* ==========================================================================
   Creative Lab — cbrown.co.nz
   Visual system for dark-minimal interactive homepage
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --cl-bg:          #0a0a0f;
  --cl-bg-subtle:   #131319;
  --cl-surface:     #1a1a24;
  --cl-border:      rgba(255,255,255,0.1);
  --cl-text:        #e8e8ec;
  --cl-text-muted:  #9a9aaa;
  --cl-text-dim:    #6e6e7e;
  --cl-accent-cyan: #66d9ef;
  --cl-accent-purple: #b48ead;
  --cl-accent-warm: #e8a87c;
  --cl-accent-green: #a3be8c;
  --cl-transition-fast: 0.2s ease;
  --cl-transition-med:  0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --cl-transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  --cl-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --cl-font-display: 'Inter', var(--cl-font-body);
}

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

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

body {
  font-family: var(--cl-font-body);
  background: var(--cl-bg);
  color: var(--cl-text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }

/* ---------- Utility ---------- */
.cl-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.cl-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;
}

/* ---------- Header ---------- */
.cl-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  transition: background var(--cl-transition-med);
}

.cl-header.is-scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.cl-logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cl-text);
  opacity: 0.9;
  transition: opacity var(--cl-transition-fast);
}
.cl-logo:hover { opacity: 1; }

.cl-nav { display: flex; gap: 2rem; list-style: none; }

.cl-nav a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cl-text-muted);
  transition: color var(--cl-transition-fast);
  padding: 0.25rem 0;
  position: relative;
}
.cl-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--cl-text);
  transition: width var(--cl-transition-med);
}
.cl-nav a:hover { color: var(--cl-text); }
.cl-nav a:hover::after { width: 100%; }
.cl-nav a:focus-visible {
  outline: 1px solid var(--cl-accent-cyan);
  outline-offset: 4px;
}

/* Mobile nav toggle */
.cl-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}
.cl-nav-toggle span {
  display: block; width: 22px; height: 1.5px;
  background: var(--cl-text-muted);
  transition: all var(--cl-transition-fast);
}

/* ---------- Hero ---------- */
.cl-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(180deg, var(--cl-bg) 0%, #0d0d14 50%, #0f1018 100%);
}

.cl-hero__canvas-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.cl-hero__canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Vignette overlay */
.cl-hero__vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(10,10,15,0.6) 100%);
}

.cl-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  pointer-events: none;
}

.cl-hero__title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.15;
  margin-bottom: 0.6rem;
  color: var(--cl-text);
}

.cl-hero__subtitle {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 200;
  letter-spacing: 0.12em;
  color: var(--cl-text-muted);
  margin-bottom: 1.5rem;
}

.cl-hero__tagline {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cl-text-dim);
}

.cl-hero__hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cl-text-dim);
  animation: cl-hint-pulse 3s ease-in-out infinite;
  pointer-events: none;
}

@keyframes cl-hint-pulse {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 0.8; }
}

/* ---------- Hover labels (projected from 3D) ---------- */
.cl-label {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  white-space: nowrap;
}
.cl-label.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.cl-label__text {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cl-text);
  background: rgba(10,10,15,0.7);
  backdrop-filter: blur(6px);
  padding: 0.35rem 0.75rem;
  border-radius: 3px;
  border: 1px solid var(--cl-border);
}

/* ---------- Intro strip ---------- */
.cl-intro {
  position: relative;
  padding: 3.5rem 0;
  text-align: center;
  border-bottom: 1px solid var(--cl-border);
}

.cl-intro__text {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--cl-text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.cl-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.cl-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cl-text-dim);
  transition: color var(--cl-transition-fast);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  border: 1px solid transparent;
}
.cl-toggle:hover { color: var(--cl-text-muted); }
.cl-toggle:focus-visible {
  outline: 1px solid var(--cl-accent-cyan);
  outline-offset: 2px;
}
.cl-toggle .icon { font-size: 1rem; }
.cl-toggle.is-active { color: var(--cl-text); border-color: var(--cl-border); }

/* ---------- Featured work ---------- */
.cl-featured {
  padding: 5rem 0;
}

.cl-featured__heading {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cl-text-dim);
  margin-bottom: 2.5rem;
  text-align: center;
}

.cl-featured__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.cl-card {
  position: relative;
  background: var(--cl-surface);
  border: 1px solid var(--cl-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--cl-transition-med), box-shadow var(--cl-transition-med);
}
.cl-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.cl-card:focus-within {
  outline: 1px solid var(--cl-accent-cyan);
  outline-offset: 2px;
}

.cl-card__visual {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--cl-bg-subtle) 0%, var(--cl-surface) 60%, rgba(255,255,255,0.03) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cl-card__visual-placeholder {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cl-text-dim);
}

.cl-card__body {
  padding: 1.5rem;
}

.cl-card__tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cl-accent-cyan);
  margin-bottom: 0.5rem;
}
.cl-card:nth-child(2) .cl-card__tag { color: var(--cl-accent-purple); }
.cl-card:nth-child(3) .cl-card__tag { color: var(--cl-accent-warm); }

.cl-card__title {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.cl-card__desc {
  font-size: 0.85rem;
  color: var(--cl-text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.cl-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cl-text-muted);
  transition: color var(--cl-transition-fast), gap var(--cl-transition-fast);
}
.cl-card__cta:hover { color: var(--cl-text); gap: 0.65rem; }
.cl-card__cta::after { content: '\2192'; }

/* ---------- Footer ---------- */
.cl-footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--cl-border);
}

.cl-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.cl-footer__brand {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--cl-text-dim);
}

.cl-footer__copy {
  font-size: 0.72rem;
  color: var(--cl-text-dim);
}

.cl-footer__social {
  display: flex;
  gap: 1rem;
  list-style: none;
}
.cl-footer__social a {
  font-size: 0.72rem;
  color: var(--cl-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--cl-transition-fast);
}
.cl-footer__social a:hover { color: var(--cl-text-muted); }

/* Footer waveform (decorative) */
.cl-footer__wave {
  width: 100%;
  height: 20px;
  margin-bottom: 1.5rem;
  opacity: 0.15;
}

/* ---------- Page transition overlay ---------- */
.cl-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--cl-bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}
.cl-transition-overlay.is-active {
  opacity: 1;
  pointer-events: all;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .cl-hero__hint { animation: none; opacity: 0.6; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cl-featured__grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .cl-header { padding: 1rem 1.25rem; }
  .cl-nav { display: none; }
  .cl-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(12px);
    padding: 1.5rem 2rem;
    gap: 1rem;
  }
  .cl-nav-toggle { display: flex; }
  .cl-hero__content { padding: 0 1rem; }
  .cl-container { padding: 0 1.25rem; }
  .cl-footer__inner { flex-direction: column; text-align: center; }
}