/* ==========================================================================
   Aurora OS — Apple-Grade Minimalist Product Landing Page
   Aesthetic: Deep Obsidian Black, Frosted Liquid Glass, Refined Apple Typography
   ========================================================================== */

:root {
  /* Apple Color System */
  --bg-black: #000000;
  --bg-surface: #0a0a0c;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-glass-nav: rgba(0, 0, 0, 0.72);

  /* Frosted Glass Lighting & Specular Edge */
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(255, 255, 255, 0.25);
  --glass-highlight: inset 0 1px 1px 0 rgba(255, 255, 255, 0.22);
  --glass-shadow: 0 24px 60px -12px rgba(0, 0, 0, 0.65);

  /* Apple Natural Accent Palette (Restrained, Organic, High Contrast) */
  --accent-blue: #2997ff;
  --accent-cyan: #30d1d6;
  --accent-emerald: #30d158;
  --accent-purple: #bf5af2;

  /* Typography Colors (Apple Human Interface Guidelines) */
  --text-primary: #f5f5f7;    /* Primary crisp off-white */
  --text-secondary: #a1a1a6;  /* Secondary readable slate */
  --text-tertiary: #6e6e73;   /* Muted captions */
  --text-headline: #ffffff;

  /* Fonts */
  --font-apple: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "Inter", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* Transitions */
  --ease-apple: cubic-bezier(0.25, 1, 0.5, 1);
  --trans-fast: 200ms var(--ease-apple);
  --trans-smooth: 400ms var(--ease-apple);

  /* Dimensions */
  --max-w: 1140px;
  --nav-h: 52px;
  --subnav-h: 48px;
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-apple);
  background-color: var(--bg-black);
  color: var(--text-primary);
  line-height: 1.5;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-black);
  color: var(--text-primary);
  position: relative;
  overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-black);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.32);
}

::selection {
  background: rgba(41, 151, 255, 0.35);
  color: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--trans-fast);
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Ambient Celestial Canvas
   ========================================================================== */
#aurora-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.site-content {
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Apple-Style Global Navigation Bar
   ========================================================================== */
.global-nav {
  position: sticky;
  top: 0;
  width: 100%;
  height: var(--nav-h);
  background: var(--bg-glass-nav);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  transition: all var(--trans-fast);
}

.global-nav.scrolled {
  background: rgba(0, 0, 0, 0.88);
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-headline);
  letter-spacing: -0.015em;
}

.brand-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-icon svg {
  width: 100%;
  height: 100%;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-menu a {
  font-size: 0.825rem;
  color: var(--text-secondary);
  font-weight: 400;
  transition: color var(--trans-fast);
}

.nav-menu a:hover {
  color: var(--text-headline);
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: #ffffff;
  color: #000000 !important;
  font-size: 0.775rem;
  font-weight: 600;
  padding: 0.35rem 0.95rem;
  border-radius: 9999px;
  transition: all var(--trans-fast);
}

.nav-cta-btn:hover {
  background: #f5f5f7;
  transform: scale(1.02);
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.3);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
}

/* ==========================================================================
   Apple-Style Sticky Product Sub-Header
   ========================================================================== */
.product-subnav {
  position: sticky;
  top: var(--nav-h);
  width: 100%;
  height: var(--subnav-h);
  background: rgba(10, 10, 12, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 999;
}

.subnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.subnav-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-headline);
  letter-spacing: -0.02em;
}

.subnav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.775rem;
}

.subnav-links a {
  color: var(--text-secondary);
}

.subnav-links a:hover, .subnav-links a.active {
  color: var(--text-headline);
}

.subnav-github-link {
  color: var(--accent-blue) !important;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 500;
}

.subnav-github-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Liquid Frosted Glass Utility
   ========================================================================== */
.liquid-glass {
  background: var(--bg-card);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-highlight);
  border-radius: 28px;
  transition: all var(--trans-smooth);
}

.liquid-glass:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-hover);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 6.5rem 0 5rem;
  text-align: center;
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.8rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-headline);
  max-width: 980px;
  margin: 0 auto 1.5rem;
}

.text-gradient-apple {
  background: linear-gradient(180deg, #ffffff 40%, rgba(255, 255, 255, 0.65) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.45;
  max-width: 760px;
  margin: 0 auto 2.8rem;
  letter-spacing: -0.015em;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 4.5rem;
}

.btn-apple-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: #ffffff;
  color: #000000;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.85rem;
  border-radius: 9999px;
  transition: all var(--trans-fast);
}

.btn-apple-primary:hover {
  background: #f5f5f7;
  transform: scale(1.02);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.35);
}

.btn-apple-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-blue);
  font-size: 1.05rem;
  font-weight: 500;
}

.btn-apple-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Hero Desktop Device Mockup (Liquid Frosted Glass Window)
   ========================================================================== */
.hero-device-wrapper {
  max-width: 1040px;
  margin: 0 auto;
}

.liquid-desktop-window {
  border-radius: 28px;
  background: rgba(18, 18, 22, 0.65);
  backdrop-filter: blur(40px) saturate(190%);
  -webkit-backdrop-filter: blur(40px) saturate(190%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 
    0 40px 100px -20px rgba(0, 0, 0, 0.85),
    inset 0 1px 1px 0 rgba(255, 255, 255, 0.35);
  overflow: hidden;
}

.window-chrome {
  background: rgba(255, 255, 255, 0.04);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chrome-dots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot.r { background: #ff5f57; }
.dot.y { background: #febc2e; }
.dot.g { background: #28c840; }

.chrome-title {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chrome-badge {
  font-size: 0.7rem;
  color: #30d158;
  background: rgba(48, 209, 88, 0.12);
  padding: 0.15rem 0.55rem;
  border-radius: 9999px;
  font-weight: 600;
}

.window-content {
  padding: 3.5rem 2.5rem;
  min-height: 440px;
  background: radial-gradient(circle at 50% 15%, rgba(41, 151, 255, 0.08) 0%, transparent 70%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 3rem;
}

/* Central Spotlight Command Hub */
.apple-command-hub {
  max-width: 620px;
  width: 100%;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  padding: 1.1rem 1.6rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.25);
  text-align: left;
}

.hub-top-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.hub-search-icon {
  color: var(--accent-blue);
  font-size: 1.1rem;
}

.hub-query-text {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-headline);
  flex-grow: 1;
}

.hub-key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  color: var(--text-secondary);
}

.hub-response {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 0.95rem 1.15rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.hub-response strong {
  color: var(--text-headline);
}

.hub-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: #30d158;
}

/* Floating Glass Cards in Mockup */
.desktop-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  text-align: left;
}

.mini-glass-card {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

.card-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-headline);
  letter-spacing: -0.03em;
  margin-bottom: 0.2rem;
}

.card-tag {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.card-foot {
  font-size: 0.725rem;
  color: var(--text-tertiary);
}

/* ==========================================================================
   Section Base & Apple Typographic Scale
   ========================================================================== */
.section {
  padding: 8rem 0;
  position: relative;
}

.section-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 0.75rem;
}

.section-headline {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-headline);
  margin-bottom: 1.25rem;
}

.section-lead {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 4.5rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Bento Highlights Grid (Apple Style)
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.bento-card {
  padding: 2.75rem 2.25rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 340px;
  position: relative;
  overflow: hidden;
}

.bento-card.span-2 {
  grid-column: span 2;
}

.bento-header {
  margin-bottom: 2rem;
}

.bento-kicker {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 0.6rem;
}

.bento-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-headline);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.bento-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.bento-stat-big {
  font-size: 3.8rem;
  font-weight: 800;
  color: var(--text-headline);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-top: 1rem;
}

.bento-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.35rem;
}

/* ==========================================================================
   Deep Dive Feature Showcases
   ========================================================================== */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4.5rem;
  align-items: center;
  margin-bottom: 6rem;
  text-align: left;
}

.feature-split.reverse {
  direction: rtl;
}
.feature-split.reverse > * {
  direction: ltr;
}

.feature-copy {
  display: flex;
  flex-direction: column;
}

.feature-tag {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 0.75rem;
}

.feature-title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-headline);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.feature-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.feature-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.feature-points li {
  font-size: 0.95rem;
  color: var(--text-primary);
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  line-height: 1.5;
}

.feature-points li::before {
  content: "—";
  color: var(--accent-blue);
  font-weight: 700;
}

.feature-visual-box {
  padding: 2.5rem;
}

/* ==========================================================================
   Apple-Style Specifications Matrix
   ========================================================================== */
.specs-container {
  max-width: 880px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  text-align: left;
}

.specs-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.95rem;
  align-items: center;
}

.specs-row:last-child {
  border-bottom: none;
}

.spec-category {
  font-weight: 600;
  color: var(--text-headline);
}

.spec-detail {
  color: var(--text-secondary);
  line-height: 1.5;
}

.spec-detail strong {
  color: var(--text-headline);
}

/* ==========================================================================
   Grand Finale Call To Action (Release Banner)
   ========================================================================== */
.cta-banner-wrapper {
  max-width: 980px;
  margin: 2rem auto 0;
  text-align: center;
}

.cta-banner-card {
  padding: 5rem 3rem;
  border-radius: 36px;
  background: radial-gradient(circle at 50% 20%, rgba(41, 151, 255, 0.12) 0%, rgba(255, 255, 255, 0.03) 70%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.9), inset 0 1px 1px rgba(255, 255, 255, 0.28);
}

.cta-banner-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-headline);
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.cta-banner-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 2.75rem;
  line-height: 1.55;
}

.cta-banner-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.sponsor-line {
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sponsor-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--trans-fast);
}

.sponsor-link:hover {
  color: #ffffff;
}

/* ==========================================================================
   Apple-Style Footer
   ========================================================================== */
.apple-footer {
  margin-top: 6rem;
  background: #000000;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4rem 0 3rem;
  font-size: 0.775rem;
  color: var(--text-tertiary);
  text-align: left;
}

.footer-footnotes {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1.75rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col-title {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links-list a {
  color: var(--text-secondary);
}

.footer-links-list a:hover {
  color: #ffffff;
}

.footer-legal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 900px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card.span-2 {
    grid-column: span 1;
  }
  .feature-split, .feature-split.reverse {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .desktop-cards-row {
    grid-template-columns: 1fr;
  }
  .specs-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .footer-nav-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .nav-menu {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .subnav-links a:not(.subnav-github-link) {
    display: none;
  }
  .footer-nav-grid {
    grid-template-columns: 1fr;
  }
  .window-content {
    padding: 2rem 1.25rem;
  }
}