/* ── Base ── */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: var(--fw-regular);
  overflow-x: hidden;
  cursor: none;
}

::selection {
  background: var(--accent-purple);
  color: #fff;
}

/* ── Noise Overlay — very subtle on light ── */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  pointer-events: none;
  opacity: 0.018;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ── Container ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ── Section ── */
.section {
  padding: var(--section-pad) 0;
  position: relative;
  overflow-x: hidden;
}

main {
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

/* ── Alternate section backgrounds ── */
.section:nth-child(even) {
  background: var(--bg-secondary);
}

/* ── Label ── */
.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-purple);
  margin-bottom: 1.5rem;
  display: inline-block;
}

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

/* ── Section Headers ── */
.section-heading {
  font-weight: var(--fw-bold);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-sub {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  max-width: 600px;
  line-height: 1.6;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 1.25rem var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s, backdrop-filter 0.4s, box-shadow 0.4s;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.nav-brand {
  font-family: 'Space Grotesk', var(--font-body);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  color: var(--text-primary);
}

.nav-brand .q-mark {
  color: var(--accent-purple);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.3s;
  font-weight: var(--fw-semibold);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--accent-purple);
  border-radius: 4px;
  color: var(--accent-purple) !important;
  transition: background 0.3s, color 0.3s;
}

.nav-cta:hover {
  background: var(--accent-purple);
  color: #fff !important;
}

/* ── Loader ── */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-inner {
  text-align: center;
}

.loader-logo {
  font-family: 'Space Grotesk', var(--font-body);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  color: var(--text-primary);
}

.loader-q {
  color: var(--accent-purple);
}

.loader-cursor {
  display: inline-block;
  width: 2px;
  height: 2.5rem;
  background: var(--accent-purple);
  margin-left: 4px;
  animation: loader-blink 0.8s infinite;
}

@keyframes loader-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.loader-bar {
  width: 120px;
  height: 2px;
  background: rgba(123, 97, 255, 0.12);
  border-radius: 1px;
  margin: 0 auto;
  overflow: hidden;
}

.loader-bar-fill {
  width: 0;
  height: 100%;
  background: var(--accent-purple);
  border-radius: 1px;
  animation: loader-fill 1.8s var(--ease-in-out) forwards;
}

@keyframes loader-fill {
  to { width: 100%; }
}

/* ── Glitch (subtle, hero only) ── */
.glitch {
  position: relative;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.glitch::before {
  color: var(--accent-cyan);
  animation: glitch-1 4s infinite linear alternate-reverse;
  clip-path: inset(0 0 80% 0);
  transform: translateX(1px);
}

.glitch::after {
  color: var(--accent-purple);
  animation: glitch-2 4s infinite linear alternate-reverse;
  clip-path: inset(80% 0 0 0);
  transform: translateX(-1px);
}

@keyframes glitch-1 {
  0%, 93% { transform: translateX(1px); }
  94% { transform: translateX(-3px); }
  95% { transform: translateX(3px); }
  97% { transform: translateX(-2px); }
  98% { transform: translateX(2px); }
  99% { transform: translateX(-1px); }
  100% { transform: translateX(1px); }
}

@keyframes glitch-2 {
  0%, 93% { transform: translateX(-1px); }
  94% { transform: translateX(2px); }
  95% { transform: translateX(-3px); }
  97% { transform: translateX(1px); }
  98% { transform: translateX(-2px); }
  99% { transform: translateX(1px); }
  100% { transform: translateX(-1px); }
}

/* ── Tags ── */
.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(123, 97, 255, 0.15);
  border-radius: 100px;
  color: var(--text-secondary);
  background: rgba(123, 97, 255, 0.04);
  display: inline-block;
  white-space: nowrap;
}

/* ── Mobile Nav Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 0;
  position: relative;
  z-index: 1;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform 0.3s, opacity 0.3s;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  body {
    cursor: auto;
  }

  .cursor-dot, .cursor-ring {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transition: transform 0.4s var(--ease-out);
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.08);
    transform: translateX(100%);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1rem;
    color: var(--text-primary);
  }
}