/**
 * NADIR premium layer — enterprise polish on top of tokens + design-system + layout
 */

:root {
  --container: min(1200px, calc(100% - 2.5rem));
  --header-h: 72px;
  --radius-pill: 999px;
  --glow-hero: radial-gradient(ellipse 55% 45% at 50% 0%, rgba(249, 115, 22, 0.22), transparent 70%);
}

/* ─── Header ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(6, 7, 8, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px) saturate(1.25);
  -webkit-backdrop-filter: blur(20px) saturate(1.25);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(10, 11, 13, 0.92);
  border-bottom-color: rgba(249, 115, 22, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.site-header .nav-shell {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.brand-logo {
  display: block;
  filter: drop-shadow(0 4px 12px rgba(249, 115, 22, 0.35));
}

.brand-text {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex: 1;
  justify-content: center;
}

.nav-link,
.nav-dropdown-toggle {
  font-family: var(--body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  background: none;
  border: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-link:hover,
.nav-dropdown-toggle:hover,
.nav-link.active,
.nav-dropdown-toggle[aria-expanded="true"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-group {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  background: rgba(15, 17, 21, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-layer-3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s var(--ease-out-expo), visibility 0.2s;
}

.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown,
.nav-group.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--text2);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-dropdown a:hover {
  background: rgba(249, 115, 22, 0.1);
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
}

/* Buttons */
body.nadir-site .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: var(--body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: transform 0.15s var(--ease-spring), box-shadow 0.2s ease, background 0.15s ease;
}

body.nadir-site .btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

body.nadir-site .btn-primary {
  color: #0a0b0d;
  background: linear-gradient(135deg, #ea580c, #f97316 50%, #fb923c);
  border-color: rgba(253, 186, 116, 0.4);
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.35);
}

body.nadir-site .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(249, 115, 22, 0.45);
}

body.nadir-site .btn-ghost,
body.nadir-site .btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

body.nadir-site .btn-ghost:hover,
body.nadir-site .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(249, 115, 22, 0.35);
}

/* Page offset for fixed header */
body.nadir-site:not(.nadir-home) main,
body.nadir-site .page-main {
  padding-top: var(--header-h);
}

/* ─── Inner page heroes ─── */
body.nadir-site:not(.nadir-home) .hero {
  padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(2rem, 4vw, 3rem);
  position: relative;
}

body.nadir-site:not(.nadir-home) .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--glow-hero);
  pointer-events: none;
}

.hero-split .container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  text-align: left;
}

.hero-split .hero-copy h1 {
  max-width: 14ch;
  margin-top: 0.75rem;
}

.hero-split .hero-copy p {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text2);
  max-width: 52ch;
}

.hero-split .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-split .eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--nadir-magma-500), transparent);
}

/* ─── Sections & cards ─── */
body.nadir-site .section {
  padding: clamp(4rem, 7vw, 6.5rem) 0;
}

body.nadir-site .section-header {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

body.nadir-site .section-header--center {
  margin-inline: auto;
  text-align: center;
}

body.nadir-site .section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  margin-top: 0.5rem;
}

body.nadir-site .section-header p {
  margin-top: 0.85rem;
  font-size: 1.0625rem;
  color: var(--text2);
  line-height: 1.7;
}

.surface-card,
.demo-hub-card,
.metric-card,
.media-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: linear-gradient(165deg, rgba(30, 35, 43, 0.9), rgba(15, 17, 21, 0.95));
  box-shadow: var(--shadow-layer-1);
  transition: transform 0.35s var(--ease-out-expo), border-color 0.25s ease, box-shadow 0.35s ease;
}

.surface-card::before,
.demo-hub-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(249, 115, 22, 0.45), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.surface-card:hover,
.demo-hub-card:hover,
.metric-card:hover {
  transform: translateY(-6px);
  border-color: rgba(249, 115, 22, 0.25);
  box-shadow: var(--shadow-layer-2), 0 0 40px rgba(249, 115, 22, 0.08);
}

.surface-card:hover::before,
.demo-hub-card:hover::before {
  opacity: 1;
}

.demo-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.demo-hub-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.demo-hub-card h3 {
  font-size: 1.2rem;
}

.demo-hub-card p {
  flex: 1;
  color: var(--text2);
  font-size: 0.95rem;
  line-height: 1.65;
}

.media-card {
  padding: 0.75rem;
}

.media-card video,
.media-card iframe {
  border-radius: var(--radius-md);
  background: var(--nadir-charcoal-1000);
}

/* CTA band */
.cta-band {
  padding: clamp(2rem, 4vw, 3rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(249, 115, 22, 0.22);
  background:
    linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(15, 17, 21, 0.95)),
    var(--nadir-charcoal-900);
  box-shadow: var(--shadow-layer-2), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.cta-band--inline {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.cta-band h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  max-width: 28ch;
}

.cta-band p {
  margin-top: 0.65rem;
  color: var(--text2);
  max-width: 48ch;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, transparent, rgba(6, 7, 8, 0.6));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 2rem;
}

.footer-brand .brand-text {
  font-size: 0.95rem;
}

/* Mobile drawer */
.nav-drawer-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nadir-magma-400);
  margin: 1.25rem 0 0.5rem;
  padding: 0 1.25rem;
}

.nav-drawer-label:first-child {
  margin-top: 0.5rem;
}

.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 88vw);
  height: 100vh;
  z-index: 1002;
  padding: calc(var(--header-h) + 1rem) 0 6rem;
  background: rgba(10, 11, 13, 0.98);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-out-expo);
  overflow-y: auto;
}

.nav-drawer a {
  display: block;
  padding: 0.7rem 1.25rem;
  font-size: 1rem;
  color: var(--text2);
}

.nav-drawer a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}

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

body.nav-open .nav-drawer-backdrop {
  opacity: 1;
  visibility: visible;
}

body.nav-open {
  overflow: hidden;
}

.nav-drawer-cta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem;
  display: grid;
  gap: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(6, 7, 8, 0.95);
}

@media (max-width: 1024px) {
  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: currentColor;
    transition: transform 0.2s ease;
  }

  body.nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  body.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  body.nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-actions .btn-ghost {
    display: none;
  }

  .hero-split .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-split .eyebrow {
    justify-content: center;
  }

  .demo-hub-grid,
  .cta-band--inline,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .cta-band--inline {
    text-align: center;
  }

  .cta-band__actions {
    justify-content: center;
  }
}

/* Homepage overrides */
body.nadir-home {
  padding-top: 0;
}

body.nadir-home #hero.home-hero {
  padding-top: calc(var(--header-h) + 3rem);
}

body.nadir-home .hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

body.nadir-home h1 {
  font-size: clamp(2.75rem, 6vw, 4.25rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-transform: none;
}

body.nadir-home .hero-sub {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text2);
  max-width: 54ch;
}

body.nadir-home .btn-primary,
body.nadir-home .btn-outline {
  font-family: var(--body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  border-radius: var(--radius-pill);
  padding: 0.85rem 1.5rem;
}

body.nadir-home .telemetry-strip {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(12px);
}

body.nadir-home .section-eyebrow,
body.nadir-home .section h2 {
  text-transform: none;
  letter-spacing: -0.02em;
}

body.nadir-home .section h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

body.nadir-home section {
  position: relative;
  z-index: 1;
}

.container-wide {
  width: min(1320px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* Article prose */
.prose-article {
  max-width: 68ch;
}

.prose-article .lead {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--text2);
  margin-bottom: 2rem;
}

.prose-article h2 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose-article p {
  color: var(--text2);
  margin-bottom: 1rem;
}

.article-list a {
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.article-list a:hover {
  border-color: rgba(249, 115, 22, 0.35);
  transform: translateX(4px);
}