/**
 * Nova OS Page Styles
 * Audience-first IA, proof-first visuals.
 *
 * Keep this file OS-page-specific.
 * Shared tokens live in nova-ui.css
 */

:root {
  /* SwayUX material accents (visual identity layer) */
  --sway-paper-warm: rgba(252, 250, 245, 0.12);
  --sway-paper-border: rgba(252, 250, 245, 0.18);
  --sway-paper-grain: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");

  --sway-glass-bg: rgba(255, 255, 255, 0.07);
  --sway-glass-border: rgba(255, 255, 255, 0.12);
  --sway-glass-blur: 18px;

  --sway-light-glow: rgba(74, 158, 255, 0.18);
}

/* ============================================
   Jump nav (audience / sections)
   ============================================ */

.os-jump {
  position: sticky;
  top: 60px;
  z-index: 900;
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-block-end: 1px solid var(--nova-border-1);
}

.os-jump__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--nova-space-4);
  padding-block: var(--nova-space-3);
}

.os-jump__label {
  font-family: var(--nova-font-sans-strong);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--nova-text-4);
  white-space: nowrap;
}

.os-jump__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--nova-space-2);
  justify-content: flex-end;
}

.os-jump__link {
  display: inline-flex;
  align-items: center;
  gap: var(--nova-space-2);
  padding: 8px 10px;
  border-radius: var(--nova-radius-pill);
  border: 1px solid var(--nova-border-1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--nova-text-2);
  text-decoration: none;
  font-family: var(--nova-font-sans-strong);
  font-size: 13px;
  transition: all var(--nova-dur-2) var(--nova-ease-out);
}

.os-jump__link:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--nova-border-2);
  color: var(--nova-text-1);
}

@media (max-width: 768px) {
  .os-jump__inner {
    align-items: flex-start;
    flex-direction: column;
  }
  .os-jump__links {
    justify-content: flex-start;
  }
}

/* ============================================
   Sections (shared)
   ============================================ */

.os-section {
  padding-block: 96px;
}

.os-section--tight {
  padding-block: 72px;
}

.os-section--border {
  border-block-start: 1px solid var(--nova-border-1);
}

.os-header {
  text-align: center;
  max-width: 900px;
  margin-inline: auto;
  margin-block-end: var(--nova-space-9);
}

.os-kicker {
  font-family: var(--nova-font-sans-strong);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nova-text-3);
  margin: 0 0 var(--nova-space-3);
}

.os-title {
  font-family: var(--nova-font-sans-strong);
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--nova-text-strong);
  margin: 0 0 var(--nova-space-4);
}

.os-subtitle {
  font-family: var(--nova-font-sans);
  font-size: 18px;
  line-height: 1.65;
  color: var(--nova-text-2);
  margin: 0;
}

.os-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--nova-space-8);
  align-items: center;
}

@media (max-width: 900px) {
  .os-split {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Hero (proof-first)
   ============================================ */

.os-hero {
  padding-top: 140px;
  padding-bottom: 64px;
}

.os-hero__headline {
  font-family: var(--nova-font-sans-strong);
  font-size: clamp(56px, 10vw, 120px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--nova-text-strong);
  margin: 0 0 var(--nova-space-5);
}

.os-hero__lead {
  font-family: var(--nova-font-sans);
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.65;
  color: var(--nova-text-2);
  max-width: 72ch;
  margin: 0 auto var(--nova-space-7);
}

.os-hero__ctas {
  display: inline-flex;
  gap: var(--nova-space-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--nova-space-8);
}

.os-hero__proof {
  max-width: 1100px;
  margin-inline: auto;
  border-radius: var(--nova-radius-xl);
  border: 1px solid var(--nova-border-1);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(30,30,30,0.65) 0%, rgba(15,15,15,0.9) 100%);
  box-shadow: var(--nova-shadow-1);
}

.os-proof {
  display: grid;
  grid-template-columns: 1fr;
}

.os-proof__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.os-proof__dots {
  display: inline-flex;
  gap: 8px;
}

.os-proof__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.os-proof__dot:nth-child(1) { background: rgba(255, 95, 87, 0.85); }
.os-proof__dot:nth-child(2) { background: rgba(255, 189, 46, 0.85); }
.os-proof__dot:nth-child(3) { background: rgba(40, 200, 64, 0.85); }

.os-proof__label {
  font-family: var(--nova-font-sans-strong);
  font-size: 13px;
  color: var(--nova-text-3);
}

.os-proof__stage {
  position: relative;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
}

.os-proof__stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 120% at 20% 10%, rgba(74, 158, 255, 0.12) 0%, rgba(74, 158, 255, 0) 45%),
              radial-gradient(120% 120% at 80% 90%, rgba(252, 250, 245, 0.06) 0%, rgba(252, 250, 245, 0) 55%);
  pointer-events: none;
}

/* Animated “proof” mock: window + sheet + dock (conceptual) */
.os-proof__window {
  position: relative;
  width: min(720px, 92%);
  height: min(360px, 74%);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(10, 10, 10, 0.55);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.55);
  overflow: hidden;
  transform: translateY(-10px);
}

.os-proof__window::before {
  content: "";
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 28px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.os-proof__content {
  position: absolute;
  top: 44px;
  inset-inline: 18px;
  bottom: 18px;
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: 14px;
}

.os-proof__panel {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.os-proof__panel--paper {
  background: linear-gradient(145deg, var(--sway-paper-warm), rgba(252, 250, 245, 0.04));
  border: 1px solid var(--sway-paper-border);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.10);
  position: relative;
}

.os-proof__panel--paper::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--sway-paper-grain);
  opacity: 0.018;
  pointer-events: none;
}

.os-proof__dock {
  position: absolute;
  bottom: 18px;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(45, 42, 38, 0.88);
  border: 1px solid rgba(252, 250, 245, 0.10);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.10);
}

.os-proof__icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.10);
}

.os-proof__icon:nth-child(1) { background: linear-gradient(145deg, #4a9eff, #0953c7); }
.os-proof__icon:nth-child(2) { background: linear-gradient(145deg, #54d98c, #2a9d5c); }
.os-proof__icon:nth-child(3) { background: linear-gradient(145deg, #ffd43b, #fab005); }
.os-proof__icon:nth-child(4) { background: linear-gradient(145deg, #845ef7, #5f3dc4); }
.os-proof__icon:nth-child(5) { background: linear-gradient(145deg, #ff6b6b, #c74040); }

.os-proof__hint {
  padding: 16px 18px;
  font-family: var(--nova-font-sans);
  font-size: 14px;
  color: var(--nova-text-3);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.16);
}

@media (prefers-reduced-motion: no-preference) {
  .os-proof__window {
    animation: osWindowFloat 6s var(--nova-ease-out) infinite;
  }
  .os-proof__dock .os-proof__icon:nth-child(3) {
    animation: osDockPulse 3.2s var(--nova-ease-out) infinite;
  }
  .os-proof__panel--paper {
    animation: osPaperBreathe 4.8s var(--nova-ease-out) infinite;
  }
}

@keyframes osWindowFloat {
  0%, 100% { transform: translateY(-10px) translateX(0); }
  50% { transform: translateY(-16px) translateX(6px); }
}

@keyframes osDockPulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-2px); }
}

@keyframes osPaperBreathe {
  0%, 100% { box-shadow: 0 10px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.10); }
  50% { box-shadow: 0 18px 52px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.12); }
}

/* ============================================
   4-pillar strip
   ============================================ */

.os-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--nova-space-5);
}

@media (max-width: 1024px) {
  .os-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .os-pillars {
    grid-template-columns: 1fr;
  }
}

.os-pillar {
  background: var(--nova-surface-2);
  border: 1px solid var(--nova-border-1);
  border-radius: var(--nova-radius-xl);
  padding: var(--nova-space-6);
  transition: all var(--nova-dur-2) var(--nova-ease-out);
}

.os-pillar:hover {
  border-color: var(--nova-border-2);
  transform: translateY(-2px);
}

.os-pillar__title {
  font-family: var(--nova-font-sans-strong);
  font-size: 16px;
  color: var(--nova-text-strong);
  margin: 0 0 var(--nova-space-2);
}

.os-pillar__desc {
  font-family: var(--nova-font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--nova-text-2);
  margin: 0 0 var(--nova-space-4);
}

.os-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--nova-radius-pill);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--nova-border-1);
  color: var(--nova-text-3);
  font-family: var(--nova-font-sans-strong);
  font-size: 12px;
}

.os-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--nova-accent-2);
}

/* ============================================
   Diagrams (SVG / images)
   ============================================ */

.os-diagram {
  width: 100%;
  border-radius: var(--nova-radius-xl);
  border: 1px solid var(--nova-border-1);
  background: rgba(255, 255, 255, 0.02);
  padding: var(--nova-space-6);
}

.os-diagram__img {
  width: 100%;
  height: auto;
  display: block;
}

.os-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
}

.os-bullets li {
  padding-block: 10px;
  border-top: 1px solid var(--nova-border-1);
  display: flex;
  gap: var(--nova-space-3);
  align-items: flex-start;
  color: var(--nova-text-2);
  font-family: var(--nova-font-sans);
  font-size: 15px;
  line-height: 1.6;
}

.os-bullets li:first-child {
  border-top: none;
}

.os-bullets li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  margin-top: 7px;
  background: var(--nova-accent-2);
  flex-shrink: 0;
}

/* ============================================
   Compatibility table
   ============================================ */

.os-compat {
  display: grid;
  gap: var(--nova-space-4);
}

.os-compat-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--nova-space-4);
  align-items: start;
  padding: var(--nova-space-5);
  border-radius: var(--nova-radius-xl);
  border: 1px solid var(--nova-border-1);
  background: var(--nova-surface-2);
}

@media (max-width: 768px) {
  .os-compat-row {
    grid-template-columns: 1fr;
  }
}

.os-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--nova-radius-lg);
  border: 1px solid var(--nova-border-1);
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--nova-font-sans-strong);
  color: var(--nova-text-1);
  white-space: nowrap;
}

.os-badge--native { border-color: rgba(40, 200, 64, 0.35); background: rgba(40, 200, 64, 0.06); }
.os-badge--x86 { border-color: rgba(255, 189, 46, 0.35); background: rgba(255, 189, 46, 0.06); }
.os-badge--android { border-color: rgba(61, 220, 132, 0.35); background: rgba(61, 220, 132, 0.06); }
.os-badge--windows { border-color: rgba(0, 120, 212, 0.35); background: rgba(0, 120, 212, 0.06); }
.os-badge--games { border-color: rgba(132, 94, 247, 0.35); background: rgba(132, 94, 247, 0.06); }

.os-compat-row__title {
  font-family: var(--nova-font-sans-strong);
  font-size: 16px;
  color: var(--nova-text-strong);
  margin: 0 0 6px;
}

.os-compat-row__desc {
  font-family: var(--nova-font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--nova-text-2);
  margin: 0 0 10px;
}

.os-compat-row__note {
  font-family: var(--nova-font-sans);
  font-size: 13px;
  color: var(--nova-text-4);
  margin: 0;
}

/* ============================================
   Materials gallery (prove visually)
   ============================================ */

.os-materials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--nova-space-5);
}

@media (max-width: 1024px) {
  .os-materials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .os-materials-grid {
    grid-template-columns: 1fr;
  }
}

.os-material-tile {
  border-radius: var(--nova-radius-xl);
  border: 1px solid var(--nova-border-1);
  background: var(--nova-surface-2);
  overflow: hidden;
  transition: all var(--nova-dur-2) var(--nova-ease-out);
}

.os-material-tile:hover {
  transform: translateY(-2px);
  border-color: var(--nova-border-2);
}

.os-material-tile__swatch {
  aspect-ratio: 4 / 3;
  background: rgba(255, 255, 255, 0.03);
  position: relative;
}

.os-material-tile__swatch--flat {
  background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
}

.os-material-tile__swatch--paper {
  background: linear-gradient(145deg, rgba(252,250,245,0.16), rgba(252,250,245,0.05));
}

.os-material-tile__swatch--paper::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sway-paper-grain);
  opacity: 0.03;
}

.os-material-tile__swatch--glass {
  background: var(--sway-glass-bg);
  backdrop-filter: blur(var(--sway-glass-blur));
  -webkit-backdrop-filter: blur(var(--sway-glass-blur));
}

.os-material-tile__swatch--light {
  background: radial-gradient(circle at 50% 50%, var(--sway-light-glow) 0%, rgba(74,158,255,0) 70%);
}

.os-material-tile__body {
  padding: var(--nova-space-5);
}

.os-material-tile__title {
  font-family: var(--nova-font-sans-strong);
  font-size: 16px;
  color: var(--nova-text-strong);
  margin: 0 0 6px;
}

.os-material-tile__desc {
  font-family: var(--nova-font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--nova-text-2);
  margin: 0;
}

.os-material-closeup {
  margin-top: var(--nova-space-7);
  border-radius: var(--nova-radius-xl);
  border: 1px solid rgba(252, 250, 245, 0.14);
  background: linear-gradient(145deg, rgba(252,250,245,0.10), rgba(252,250,245,0.02));
  padding: var(--nova-space-6);
  position: relative;
  overflow: hidden;
}

.os-material-closeup::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sway-paper-grain);
  opacity: 0.02;
  pointer-events: none;
}

.os-material-closeup__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--nova-space-5);
}

@media (max-width: 768px) {
  .os-material-closeup__grid {
    grid-template-columns: 1fr;
  }
}

.os-material-closeup__card {
  border-radius: 18px;
  padding: var(--nova-space-6);
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(0, 0, 0, 0.18);
}

.os-material-closeup__card--paper {
  border-color: rgba(252, 250, 245, 0.18);
  background: rgba(45, 42, 38, 0.55);
  box-shadow: 0 18px 60px rgba(0,0,0,0.55);
}

.os-material-closeup__label {
  font-family: var(--nova-font-sans-strong);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nova-text-4);
  margin: 0 0 10px;
}

.os-material-closeup__text {
  font-family: var(--nova-font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--nova-text-2);
  margin: 0;
}

/* ============================================
   Adaptive postures
   ============================================ */

.os-postures {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--nova-space-6);
}

@media (max-width: 900px) {
  .os-postures {
    grid-template-columns: 1fr;
  }
}

.os-posture {
  background: var(--nova-surface-2);
  border: 1px solid var(--nova-border-1);
  border-radius: var(--nova-radius-xl);
  padding: var(--nova-space-6);
}

.os-posture__mock {
  aspect-ratio: 4 / 3;
  border-radius: var(--nova-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  margin-bottom: var(--nova-space-5);
  position: relative;
  overflow: hidden;
}

.os-posture__mock--mobile {
  aspect-ratio: 9 / 16;
  max-width: 220px;
  margin-inline: auto;
  margin-bottom: var(--nova-space-5);
}

.os-posture__mock::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.os-posture__title {
  font-family: var(--nova-font-sans-strong);
  font-size: 18px;
  color: var(--nova-text-strong);
  margin: 0 0 8px;
}

.os-posture__desc {
  font-family: var(--nova-font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--nova-text-2);
  margin: 0;
}

/* ============================================
   Security split
   ============================================ */

.os-security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--nova-space-6);
}

@media (max-width: 900px) {
  .os-security-grid {
    grid-template-columns: 1fr;
  }
}

.os-security-card {
  background: var(--nova-surface-2);
  border: 1px solid var(--nova-border-1);
  border-radius: var(--nova-radius-xl);
  padding: var(--nova-space-6);
}

.os-security-card__title {
  font-family: var(--nova-font-sans-strong);
  font-size: 18px;
  color: var(--nova-text-strong);
  margin: 0 0 var(--nova-space-2);
}

.os-security-card__desc {
  font-family: var(--nova-font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--nova-text-2);
  margin: 0 0 var(--nova-space-4);
}

/* ============================================
   Developer code
   ============================================ */

.os-dev {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--nova-space-8);
  align-items: start;
}

@media (max-width: 900px) {
  .os-dev {
    grid-template-columns: 1fr;
  }
}

.os-code {
  background: rgba(15, 15, 18, 0.95);
  border: 1px solid var(--nova-border-1);
  border-radius: var(--nova-radius-xl);
  padding: var(--nova-space-5);
  overflow-x: auto;
  direction: ltr;
  text-align: left;
}

.os-code__bar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: var(--nova-space-4);
  padding-bottom: var(--nova-space-3);
  border-bottom: 1px solid var(--nova-border-1);
}

.os-code__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
}

.os-code__dot:nth-child(1) { background: rgba(255, 95, 87, 0.85); }
.os-code__dot:nth-child(2) { background: rgba(255, 189, 46, 0.85); }
.os-code__dot:nth-child(3) { background: rgba(40, 200, 64, 0.85); }

.os-code pre {
  margin: 0;
  font-family: var(--nova-font-mono);
  font-size: 14px;
  line-height: 1.65;
  color: var(--nova-text-1);
}

.os-code .kw { color: #ff79c6; }
.os-code .ty { color: #8be9fd; }
.os-code .st { color: #f1fa8c; }
.os-code .cm { color: var(--nova-text-4); }

/* ============================================
   Reduced motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .os-proof__window,
  .os-proof__dock .os-proof__icon:nth-child(3),
  .os-proof__panel--paper {
    animation: none !important;
  }
}