/**
 * NADIR design system — layered surfaces, type scale, micro-motion, 3D product stage
 * Requires nadir-tokens.css loaded first.
 */

/* ─── Base ─── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

html.nadir-site,
body.nadir-site {
  margin: 0;
  min-height: 100%;
}

body.nadir-site {
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 12% -8%, var(--nadir-magma-glow-soft), transparent 55%),
    radial-gradient(ellipse 60% 40% at 92% 4%, rgba(255, 154, 82, 0.06), transparent 50%),
    linear-gradient(180deg, var(--nadir-charcoal-1000) 0%, var(--bg) 40%, var(--nadir-charcoal-900) 100%);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nadir-site::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.35;
  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='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}

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

/* ─── Typography hierarchy ─── */
.nadir-type-display-xl,
body.nadir-site .hero h1 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nadir-type-display-lg,
body.nadir-site h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.025em;
}

body.nadir-site h2 {
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}

body.nadir-site h3 {
  font-family: var(--display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.nadir-type-eyebrow,
body.nadir-site .eyebrow {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-bright);
}

.nadir-type-body-lg,
body.nadir-site .hero p {
  font-size: 1.125rem;
  line-height: 1.72;
  color: var(--text2);
  max-width: 62ch;
}

body.nadir-site p {
  color: var(--muted);
  line-height: 1.68;
}

.nadir-type-caption {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text3);
}

.nadir-gradient-text {
  background: linear-gradient(115deg, #ff4d3a 0%, var(--nadir-magma-400) 42%, var(--nadir-magma-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─── Layered surfaces ─── */
.nadir-layer-0 {
  background: transparent;
}

.nadir-layer-1,
body.nadir-site .card,
body.nadir-site .table-shell,
body.nadir-site .timeline-shell,
body.nadir-site .code-shell {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  background-color: var(--bg-elev-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-layer-1);
  transition:
    transform var(--dur-med) var(--ease-out-expo),
    box-shadow var(--dur-med) var(--ease-out-expo),
    border-color var(--dur-fast) ease;
}

.nadir-layer-2,
body.nadir-site .site-header {
  background: rgba(15, 17, 21, 0.82);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-layer-1);
  -webkit-backdrop-filter: blur(16px) saturate(1.15);
  backdrop-filter: blur(16px) saturate(1.15);
}

.nadir-layer-3 {
  background: linear-gradient(180deg, var(--bg-elev-2), var(--bg-elev-3));
  border: 1px solid var(--border-magma);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-layer-3), var(--shadow-magma);
}

body.nadir-site .card:hover,
body.nadir-site .nadir-hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-layer-2), 0 0 0 1px rgba(249, 115, 22, 0.12);
  border-color: rgba(249, 115, 22, 0.22);
}

/* ─── Grid atmosphere ─── */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(249, 115, 22, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(249, 115, 22, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
}

/* ─── Brand mark ─── */
.brand-mark {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--nadir-charcoal-950);
  background: linear-gradient(135deg, var(--nadir-magma-400), var(--nadir-magma-700));
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  box-shadow: var(--shadow-magma);
  transition: transform var(--dur-fast) var(--ease-spring);
}

.brand:hover .brand-mark {
  transform: scale(1.06) rotate(-3deg);
}

/* ─── Buttons ─── */
body.nadir-site .btn-primary {
  color: var(--nadir-charcoal-950);
  background: linear-gradient(135deg, var(--nadir-magma-600) 0%, var(--nadir-magma-400) 55%, var(--nadir-magma-350) 100%);
  border: 1px solid rgba(253, 186, 116, 0.45);
  box-shadow: var(--shadow-magma);
  transition:
    transform var(--dur-fast) var(--ease-spring),
    box-shadow var(--dur-med) ease,
    filter var(--dur-fast) ease;
}

body.nadir-site .btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 18px 40px var(--nadir-magma-glow-soft);
}

body.nadir-site .btn-pitch,
body.nadir-site .btn-ghost {
  transition:
    transform var(--dur-fast) var(--ease-spring),
    border-color var(--dur-fast) ease,
    color var(--dur-fast) ease;
}

body.nadir-site .btn-pitch {
  color: var(--accent-bright);
  border-color: var(--border-magma);
  background: rgba(249, 115, 22, 0.08);
}

body.nadir-site .btn-ghost {
  color: var(--text2);
  border-color: var(--border-subtle);
  background: var(--soft-glass);
}

body.nadir-site .btn-ghost:hover,
body.nadir-site .btn-pitch:hover {
  transform: translateY(-1px);
  color: var(--text);
  border-color: rgba(249, 115, 22, 0.4);
}

body.nadir-site .site-nav a {
  color: var(--text3);
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}

body.nadir-site .site-nav a.active,
body.nadir-site .site-nav a:hover {
  color: var(--accent-bright);
  border-bottom-color: var(--nadir-magma-500);
}

/* ─── Section bands ─── */
body.nadir-site .section-soft {
  background: linear-gradient(180deg, rgba(24, 28, 35, 0.5), rgba(15, 17, 21, 0.85));
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* ─── 3D product visualization ─── */
.nadir-product-3d {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 1;
  margin-inline: auto;
  perspective: 1200px;
  pointer-events: none;
}

.nadir-product-3d__stage {
  position: absolute;
  inset: 10%;
  transform-style: preserve-3d;
  animation: nadir-product-orbit 18s linear infinite;
}

.nadir-product-3d__core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 88px;
  height: 88px;
  margin: -44px 0 0 -44px;
  transform: translateZ(48px);
  border-radius: 22px;
  background: linear-gradient(145deg, var(--nadir-magma-500), var(--nadir-magma-800));
  box-shadow:
    0 0 60px var(--nadir-magma-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--nadir-charcoal-950);
  animation: nadir-core-pulse 3.2s ease-in-out infinite;
}

.nadir-product-3d__ring {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  border: 1px solid rgba(249, 115, 22, 0.35);
  box-shadow: 0 0 24px rgba(249, 115, 22, 0.12);
  transform-style: preserve-3d;
}

.nadir-product-3d__ring--a {
  width: 200px;
  height: 200px;
  margin: -100px 0 0 -100px;
  transform: rotateX(68deg) translateZ(0);
  animation: nadir-ring-spin 12s linear infinite;
}

.nadir-product-3d__ring--b {
  width: 260px;
  height: 260px;
  margin: -130px 0 0 -130px;
  transform: rotateX(72deg) rotateZ(45deg) translateZ(-12px);
  border-color: rgba(255, 255, 255, 0.08);
  animation: nadir-ring-spin 20s linear infinite reverse;
}

.nadir-product-3d__satellite {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 52px;
  height: 52px;
  margin: -26px 0 0 -26px;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--nadir-charcoal-700), var(--nadir-charcoal-900));
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-layer-2);
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  color: var(--accent-bright);
  display: grid;
  place-items: center;
  text-transform: uppercase;
}

.nadir-product-3d__satellite--cam {
  transform: rotateY(0deg) translateZ(140px);
}

.nadir-product-3d__satellite--radar {
  transform: rotateY(120deg) translateZ(140px);
}

.nadir-product-3d__satellite--lidar {
  transform: rotateY(240deg) translateZ(140px);
}

.nadir-product-3d__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 45%, var(--nadir-magma-glow-soft), transparent 62%);
  filter: blur(24px);
  animation: nadir-glow-breathe 5s ease-in-out infinite;
}

/* ─── Keyframes ─── */
@keyframes nadir-fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes nadir-product-orbit {
  from {
    transform: rotateY(0deg) rotateX(12deg);
  }
  to {
    transform: rotateY(360deg) rotateX(12deg);
  }
}

@keyframes nadir-ring-spin {
  from {
    transform: rotateX(68deg) rotateZ(0deg);
  }
  to {
    transform: rotateX(68deg) rotateZ(360deg);
  }
}

@keyframes nadir-core-pulse {
  0%,
  100% {
    box-shadow: 0 0 48px var(--nadir-magma-glow), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  }
  50% {
    box-shadow: 0 0 72px var(--nadir-magma-glow), inset 0 1px 0 rgba(255, 255, 255, 0.28);
  }
}

@keyframes nadir-glow-breathe {
  0%,
  100% {
    opacity: 0.65;
  }
  50% {
    opacity: 1;
  }
}

@keyframes nadir-shimmer {
  0% {
    background-position: 200% center;
  }
  100% {
    background-position: -200% center;
  }
}

/* Micro-animation utilities */
.nadir-animate-in {
  animation: nadir-fade-up var(--dur-slow) var(--ease-out-expo) forwards;
}

.nadir-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--dur-slow) var(--ease-out-expo),
    transform var(--dur-slow) var(--ease-out-expo);
}

.nadir-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.nadir-stagger > * {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--dur-med) var(--ease-out-expo),
    transform var(--dur-med) var(--ease-out-expo);
}

.nadir-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: none; }
.nadir-stagger.is-visible > *:nth-child(2) { transition-delay: 0.12s; opacity: 1; transform: none; }
.nadir-stagger.is-visible > *:nth-child(3) { transition-delay: 0.19s; opacity: 1; transform: none; }
.nadir-stagger.is-visible > *:nth-child(4) { transition-delay: 0.26s; opacity: 1; transform: none; }
.nadir-stagger.is-visible > *:nth-child(5) { transition-delay: 0.33s; opacity: 1; transform: none; }
.nadir-stagger.is-visible > *:nth-child(6) { transition-delay: 0.4s; opacity: 1; transform: none; }

/* Hero split layout (inner pages) */
.hero-split .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  text-align: left;
}

.hero-split .hero h1,
.hero-split .hero p {
  margin-left: 0;
  margin-right: 0;
}

@media (max-width: 900px) {
  .hero-split .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-split .hero h1,
  .hero-split .hero p {
    margin-inline: auto;
  }

  .nadir-product-3d {
    max-width: 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nadir-product-3d__stage,
  .nadir-product-3d__ring--a,
  .nadir-product-3d__ring--b,
  .nadir-product-3d__core,
  .nadir-product-3d__glow {
    animation: none !important;
  }

  .nadir-reveal,
  .nadir-stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}