/* ============================================================
   Layout — header, container, hybrid scroll snap, section indicator
=============================================================== */

.section-inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--edge-pad);
}

/* ---- Section background art ----
   Soft blurred color blobs so the glass surfaces above (cards, buttons,
   nav) actually have something to blur/refract — a flat single-color
   background makes backdrop-filter invisible. Brand colors only. */

section.has-art::before,
section.has-art::after {
  content: '';
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.18;
  pointer-events: none;
  will-change: auto;
}

section.has-art::before {
  width: 32vw;
  height: 32vw;
  max-width: 420px;
  max-height: 420px;
  top: var(--art-top, -10%);
  left: var(--art-left, -12%);
  background: var(--art-color-1, var(--cyan-500));
}

section.has-art::after {
  width: 24vw;
  height: 24vw;
  max-width: 320px;
  max-height: 320px;
  top: var(--art-top-2, 55%);
  right: var(--art-right, -10%);
  left: auto;
  background: var(--art-color-2, var(--deep-blue));
  opacity: 0.13;
}

#studio.has-art { --art-top: -15%; --art-left: 55%; --art-color-1: var(--deep-blue); --art-top-2: 60%; --art-right: 60%; --art-color-2: var(--cyan-500); }
#services.has-art { --art-top: -20%; --art-left: -8%; --art-color-1: var(--cyan-500); --art-top-2: 50%; --art-right: -14%; --art-color-2: var(--deep-blue); }
#works.has-art { --art-top: -10%; --art-left: 40%; --art-color-1: var(--cyan-500); --art-top-2: 70%; --art-right: -10%; --art-color-2: var(--deep-blue); }
#why.has-art { --art-top: -18%; --art-left: -10%; --art-color-1: var(--deep-blue); --art-top-2: 60%; --art-right: -12%; --art-color-2: var(--cyan-500); }
#network.has-art { --art-top: -14%; --art-left: 50%; --art-color-1: var(--cyan-500); --art-top-2: 65%; --art-right: 55%; --art-color-2: var(--deep-blue); }
#process.has-art { --art-top: -16%; --art-left: -10%; --art-color-1: var(--cyan-500); --art-top-2: 55%; --art-right: -12%; --art-color-2: var(--deep-blue); }
#clients.has-art { --art-top: 10%; --art-left: 42%; --art-color-1: var(--deep-blue); --art-top-2: 70%; --art-right: -14%; --art-color-2: var(--cyan-500); }
#contact.has-art { --art-top: -18%; --art-left: -10%; --art-color-1: var(--cyan-500); --art-top-2: 60%; --art-right: -12%; --art-color-2: var(--deep-blue); }

@media (max-width: 640px) {
  section.has-art::before,
  section.has-art::after {
    opacity: 0.14;
    filter: blur(60px);
  }
}

/* ---- Hybrid scroll snap ----
   Short "scene" sections snap; long-content sections (Works, Clients)
   scroll normally. Wheel input is never intercepted with JS. */
html {
  scroll-snap-type: none;
}

@media (min-width: 900px) and (prefers-reduced-motion: no-preference) {
  html {
    scroll-snap-type: y mandatory;
  }
  /* Turned off for the duration of the JS wheel-scroll animation (main.js)
     so the native snap doesn't try to "correct" mid-flight and produce a
     second, delayed slide once the JS animation finishes. */
  html.is-wheel-animating {
    scroll-snap-type: none;
  }
  .snap-section {
    min-height: 100vh;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    align-items: center;
  }
  .snap-section > .section-inner {
    width: 100%;
  }
}

section {
  position: relative;
  padding-block: var(--space-2xl);
  scroll-margin-top: 72px;
}

.hero {
  min-height: 100svh;
  padding-block: var(--space-xl);
  display: flex;
  align-items: center;
}

/* ---- Header ---- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  background: linear-gradient(to bottom, rgba(10, 15, 18, 0.85), rgba(10, 15, 18, 0));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-sm) var(--edge-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand-mark {
  height: 48px;
  width: auto;
  display: block;
}

.main-nav ul {
  display: flex;
  gap: var(--space-lg);
}

.main-nav a {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease-out);
  position: relative;
  padding-block: var(--space-3xs);
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  transition: right var(--dur-base) var(--ease-out);
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--text-strong);
}

.main-nav a.is-active::after {
  right: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--text-strong);
  margin: 0 auto;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Section indicator (desktop only, decorative wayfinding) ---- */

.section-indicator {
  position: fixed;
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  z-index: 150;
  display: none;
}

.section-indicator ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-end;
}

.section-indicator .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--navy-300);
  transition: background var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.section-indicator .label {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--navy-300);
  margin-left: var(--space-2xs);
  opacity: 0;
  transform: translateX(6px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
  white-space: nowrap;
}

.section-indicator li {
  display: flex;
  align-items: center;
}

.section-indicator li.is-active .dot {
  background: var(--accent);
  transform: scale(1.6);
  box-shadow: 0 0 10px var(--accent-glow);
}

.section-indicator li.is-active .label {
  color: var(--text-strong);
  opacity: 1;
  transform: translateX(0);
}

@media (min-width: 1180px) {
  .section-indicator {
    display: block;
  }
}

/* ---- Responsive breakpoints for nav ---- */

@media (max-width: 899px) {
  .main-nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: var(--navy-600);
    border-bottom: 1px solid var(--border-hairline);
    padding: var(--space-md) var(--edge-pad) var(--space-lg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--space-md);
  }

  .main-nav a {
    font-size: var(--fs-body-lg);
  }

  .header-actions .btn-sm {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

.hide-mobile {
  display: none;
}
@media (min-width: 640px) {
  .hide-mobile {
    display: inline;
  }
}