/* ── ZENITH NATIVE OBSIDIAN & MINT DESIGN SYSTEM ── */
/* Matches official Zenith desktop app palette (electron_dashboard) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700;800&display=swap');

:root {
  /* Surface hierarchy — macOS Dark Mode (Obsidian / Space Gray) */
  --bg-dark: #111216;
  --bg-sidebar: #0c0d10;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.055);
  --bg-card-active: rgba(255, 255, 255, 0.075);
  --bg-input: rgba(0, 0, 0, 0.35);
  --bg-elevated: rgba(255, 255, 255, 0.05);

  /* Subtle Borders */
  --border-subtle: rgba(255, 255, 255, 0.065);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-focus: rgba(100, 210, 177, 0.45);
  --border-glow: rgba(100, 210, 177, 0.45);
  --border-cyan: rgba(110, 181, 255, 0.45);

  /* Signature Zenith App Accent Palette */
  --accent: #64d2b1;
  --accent-soft: rgba(100, 210, 177, 0.15);
  --accent-glow: rgba(100, 210, 177, 0.08);

  --accent-blue: #6eb5ff;
  --accent-blue-soft: rgba(110, 181, 255, 0.12);

  --accent-amber: #ffb84d;
  --accent-amber-soft: rgba(255, 184, 77, 0.12);

  --accent-red: #ff6b6b;
  --accent-red-soft: rgba(255, 107, 107, 0.12);

  --accent-purple: #a78bfa;
  --accent-purple-soft: rgba(167, 139, 250, 0.12);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #64d2b1 0%, #48b898 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 35%, #a1e8d4 75%, #6eb5ff 100%);

  /* Text hierarchy */
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #6e6e73;
  --text-quaternary: #48484a;

  --font-heading: 'Space Grotesk', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-card: 20px;
  --radius-pill: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

::selection {
  background: rgba(100, 210, 177, 0.3);
  color: #ffffff;
}

/* ── Sleek Minimalist Stealth Black Scrollbar ── */
html {
  scroll-behavior: auto;
  background-color: var(--bg-dark);
  scrollbar-width: thin;
  scrollbar-color: #262830 #000000;
}

/* WebKit & Chromium Browsers (Chrome, Edge, Brave, Opera, Safari) */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #000000;
}

::-webkit-scrollbar-thumb {
  background: #23252d;
  border-radius: var(--radius-pill);
  border: 2px solid #000000;
  background-clip: padding-box;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: #363945;
}

::-webkit-scrollbar-thumb:active {
  background: #4a4e5c;
}

::-webkit-scrollbar-corner {
  background: #000000;
}

::-webkit-scrollbar-button {
  display: none;
  width: 0;
  height: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(100, 210, 177, 0.09) 0%, transparent 60%),
    radial-gradient(circle at 85% 30%, rgba(110, 181, 255, 0.04) 0%, transparent 45%);
}

/* ── Professional Minimalist Preloader (Linear/Raycast Style) ── */
#loader-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s;
}

#loader-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.loader-logo-wrap {
  width: 96px;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.loader-logo {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  object-fit: contain;
  box-shadow: 0 0 45px rgba(100, 210, 177, 0.35), 0 0 90px rgba(100, 210, 177, 0.15);
  animation: logoPulse 2.4s ease-in-out infinite alternate;
}

@keyframes logoPulse {
  0% { transform: scale(0.97); opacity: 0.9; filter: drop-shadow(0 0 14px rgba(100, 210, 177, 0.25)); }
  100% { transform: scale(1.03); opacity: 1; filter: drop-shadow(0 0 26px rgba(100, 210, 177, 0.5)); }
}

.loader-track {
  width: 180px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.loader-fill {
  width: 0%;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(100, 210, 177, 0.7);
  transition: width 0.05s linear;
}

/* ── Floating Modern Glass Capsule Navbar (Linear/Raycast Dock) ── */
/* ── Ultra-Minimalist Floating Navbar (Stripe / Apple Pro Style) ── */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease, box-shadow 0.25s ease;
}

.navbar.scrolled {
  background: rgba(14, 16, 22, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
}

.nav-wrap {
  max-width: 1240px;
  margin: 0 auto;
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.01em;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-brand:hover {
  opacity: 0.95;
}

.nav-brand img {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  object-fit: contain;
  box-shadow: 0 0 14px rgba(100, 210, 177, 0.35);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.nav-link svg {
  opacity: 0.75;
  transition: opacity 0.18s ease;
}

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

.nav-link:hover svg {
  opacity: 1;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--accent);
  color: #080d0a;
  font-size: 12.5px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  box-shadow: 0 2px 14px rgba(100, 210, 177, 0.35);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Navbar 3D Micro-Tilt & Specular Spotlight ── */
.nav-link.tilt-card {
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 600px;
  border: 1px solid transparent;
}

.nav-link.tilt-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(8px);
  transform-style: preserve-3d;
}

.nav-link.tilt-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(100, 210, 177, 0.32);
  box-shadow: 0 10px 22px -4px rgba(0, 0, 0, 0.65), 0 0 18px rgba(100, 210, 177, 0.18);
  color: #ffffff;
}

.nav-brand.tilt-card {
  position: relative;
  overflow: hidden;
  padding: 6px 12px;
  border-radius: 10px;
  transform-style: preserve-3d;
  perspective: 600px;
  border: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.nav-brand.tilt-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(8px);
}

.nav-brand.tilt-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(100, 210, 177, 0.28);
  box-shadow: 0 10px 24px -4px rgba(0, 0, 0, 0.65), 0 0 18px rgba(100, 210, 177, 0.22);
}

.btn-nav.tilt-card {
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 600px;
  transition: box-shadow 0.25s ease, filter 0.25s ease;
}

.btn-nav.tilt-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(10px);
}

.btn-nav.tilt-card:hover {
  filter: brightness(1.08);
  box-shadow: 0 10px 26px -2px rgba(100, 210, 177, 0.65), 0 0 24px rgba(100, 210, 177, 0.4);
}

/* Nav item specular spotlight scale */
.nav-link.tilt-card::before,
.nav-brand.tilt-card::before,
.btn-nav.tilt-card::before {
  background: radial-gradient(
    circle 120px at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(100, 210, 177, 0.35),
    rgba(110, 181, 255, 0.12) 45%,
    transparent 75%
  );
}

/* ── Navbar Staggered Dropdown Entrance Keyframes ── */
@keyframes navFadeDown {
  from {
    opacity: 0;
    transform: translateY(-14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.navbar .nav-brand { animation: navFadeDown 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.05s both; }
.navbar .nav-link:nth-child(1) { animation: navFadeDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.10s both; }
.navbar .nav-link:nth-child(2) { animation: navFadeDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.14s both; }
.navbar .nav-link:nth-child(3) { animation: navFadeDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.18s both; }
.navbar .nav-link:nth-child(4) { animation: navFadeDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.22s both; }
.navbar .nav-link:nth-child(5) { animation: navFadeDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.26s both; }
.navbar .btn-nav { animation: navFadeDown 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.30s both; }

/* ── Hero Entrance Keyframes ── */
@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.hero {
  max-width: 1240px;
  margin: 0 auto;
  padding: 64px 24px 24px;
  text-align: center;
  position: relative;
}

.hero .hero-announcement { animation: heroFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both; }
.hero-title { animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both; }
.hero-subline { animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both; }
.hero-actions { animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both; }
.hero-caption { animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.35s both; }
.stage-3d-box { animation: heroFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both; }

/* ── Hero Announcement Capsule (Card-Grade 3D Specular Tilt) ── */
.hero-announcement {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  padding: 8px 24px;
  border-radius: var(--radius-pill);
  margin-bottom: 26px;
  cursor: default;
  user-select: none;
  transform-style: preserve-3d;
  perspective: 1000px;
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-announcement * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(14px);
  transform-style: preserve-3d;
}

.hero-announcement:hover {
  border-color: rgba(100, 210, 177, 0.45);
  background: rgba(22, 26, 33, 0.92);
  box-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.75), 
              0 0 28px rgba(100, 210, 177, 0.22), 
              inset 0 1px 1px rgba(255, 255, 255, 0.14);
}

.announcement-text {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.25s ease;
}

.hero-announcement:hover .announcement-text {
  color: #ffffff;
}

.announcement-ver {
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-mono);
  margin-left: 5px;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.hero-announcement:hover .announcement-ver {
  color: #7ef5cf;
  text-shadow: 0 0 14px rgba(100, 210, 177, 0.6);
}

/* ── Editorial Section Labels ── */
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(40px, 5.2vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.12;
  color: #ffffff;
  max-width: 1040px;
  margin: 0 auto 24px;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.type-line {
  display: block;
  min-height: 1.15em;
}

.type-line-2 {
  margin-top: 2px;
}

.type-cursor {
  display: inline-block;
  width: 4px;
  height: 0.82em;
  background: var(--accent);
  margin-left: 6px;
  vertical-align: -0.04em;
  border-radius: 2px;
  box-shadow: 0 0 14px rgba(100, 210, 177, 0.75);
  animation: cursorBlink 0.85s infinite;
}

@keyframes cursorBlink {
  0%, 45% { opacity: 1; }
  50%, 95% { opacity: 0; }
  100% { opacity: 1; }
}

.title-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subline {
  font-size: clamp(16px, 2.2vw, 21px);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #0f1912;
  font-size: 15px;
  font-weight: 600;
  padding: 16px 36px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  box-shadow: 0 8px 30px rgba(100, 210, 177, 0.35);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-primary.tilt-card {
  transform-style: preserve-3d;
  perspective: 700px;
  will-change: transform;
  transition: filter 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary.tilt-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(12px);
  transform-style: preserve-3d;
}

.btn-primary.tilt-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: radial-gradient(
    circle 240px at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.45),
    rgba(255, 255, 255, 0.14) 42%,
    transparent 72%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  border-radius: inherit;
  z-index: 2;
}

.btn-primary.tilt-card:hover::before {
  opacity: 1;
}

.btn-primary.tilt-card:hover {
  filter: brightness(1.08);
  box-shadow: 0 16px 44px -4px rgba(100, 210, 177, 0.65), 0 0 28px rgba(100, 210, 177, 0.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  font-size: 15px;
  font-weight: 500;
  padding: 16px 32px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-ghost.tilt-card {
  transform-style: preserve-3d;
  perspective: 700px;
  will-change: transform;
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-ghost.tilt-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
  transform: translateZ(12px);
  transform-style: preserve-3d;
}

.btn-ghost.tilt-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: radial-gradient(
    circle 260px at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(100, 210, 177, 0.35),
    rgba(110, 181, 255, 0.12) 45%,
    transparent 75%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  border-radius: inherit;
  z-index: 2;
}

.btn-ghost.tilt-card:hover::before {
  opacity: 1;
}

.btn-ghost.tilt-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3) 20%, rgba(100, 210, 177, 0.5) 50%, rgba(255, 255, 255, 0.3) 80%, transparent);
  opacity: 0.3;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 2;
}

.btn-ghost.tilt-card:hover::after {
  opacity: 1;
}

.btn-ghost.tilt-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(100, 210, 177, 0.45);
  box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.75), 0 0 24px rgba(100, 210, 177, 0.22);
}

/* ── 3D Zenith Core Chamber ── */
.stage-3d-box {
  max-width: 1080px;
  margin: 44px auto 0;
  background: radial-gradient(circle at 50% 50%, rgba(100, 210, 177, 0.08) 0%, rgba(12, 13, 16, 0.85) 75%);
  border: 1px solid var(--border-subtle);
  border-radius: 28px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 90px rgba(0, 0, 0, 0.6);
  transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.stage-3d-box:hover {
  border-color: var(--border-focus);
  box-shadow: 0 30px 100px rgba(100, 210, 177, 0.14);
}

.stage-top-hud {
  display: flex;
  align-items: center;
  position: relative;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.stage-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.btn-kbd {
  font-size: 13px;
  font-weight: 500;
  opacity: 0.75;
  letter-spacing: 0.01em;
}

.stage-dots {
  display: flex;
  gap: 7px;
}

.stage-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 6px currentColor;
}

.dot-red { color: #ff6b6b; background: #ff6b6b; }
.dot-yellow { color: #ffb84d; background: #ffb84d; }
.dot-green { color: #64d2b1; background: #64d2b1; }

.canvas-viewport {
  width: 100%;
  height: 500px;
  position: relative;
  cursor: grab;
}

.canvas-viewport:active {
  cursor: grabbing;
}

/* Floating Ambient Chips */
.floating-chip {
  position: absolute;
  background: rgba(17, 18, 22, 0.85);
  border: 1px solid var(--border-subtle);
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(16px);
  pointer-events: none;
  animation: chipFloat 6s ease-in-out infinite alternate;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.chip-1 { top: 18%; left: 5%; animation-delay: 0s; }
.chip-2 { top: 24%; right: 5%; animation-delay: 1.5s; }
.chip-3 { bottom: 20%; left: 7%; animation-delay: 3s; }
.chip-4 { bottom: 16%; right: 7%; animation-delay: 4.5s; }

.chip-check {
  color: var(--accent);
  font-weight: 700;
  text-shadow: 0 0 8px var(--accent);
}

@keyframes chipFloat {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-14px) rotate(1deg); }
}

/* ── Heavy 3D Tilt Cards Engine ── */
.tilt-card {
  position: relative;
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
  will-change: transform;
  overflow: hidden;
}

.tilt-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: radial-gradient(
    circle 380px at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(100, 210, 177, 0.24),
    rgba(110, 181, 255, 0.08) 45%,
    transparent 72%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  border-radius: inherit;
  z-index: 1;
}

.tilt-card:hover::before {
  opacity: 1;
}

/* Specular glass reflection on top edge */
.tilt-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2) 20%, rgba(100, 210, 177, 0.45) 50%, rgba(255, 255, 255, 0.2) 80%, transparent);
  opacity: 0.25;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 2;
}

.tilt-card:hover::after {
  opacity: 1;
}

/* ── Scroll Reveal System ── */
.reveal-item {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-pending {
  opacity: 0;
  transform: translateY(32px) scale(0.985);
  pointer-events: none;
}

.reveal-item.revealed {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 3D Tilt cards have their own 60fps RAF lerp loop.
   CSS must never apply transform transitions that fight or lag mouse movement */
.tilt-card {
  will-change: transform;
}

.tilt-card.revealed,
.tilt-card:hover {
  transform: none;
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.25s ease, 
              border-color 0.25s ease !important;
}

/* ── Voice-First Section ── */
.voice-section {
  max-width: 1080px;
  margin: 120px auto;
  padding: 0 24px;
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 44px;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.5);
}

.section-h2 {
  font-family: var(--font-heading);
  font-size: clamp(34px, 4.5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 18px;
}

.section-p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 740px;
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 36px;
}

.voice-stat {
  background: rgba(12, 13, 16, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 22px;
  transition: all 0.25s ease;
}

.voice-stat:hover {
  border-color: rgba(100, 210, 177, 0.45);
  box-shadow: 0 14px 35px rgba(100, 210, 177, 0.18), inset 0 1px 1px rgba(255, 255, 255, 0.12);
  background: rgba(18, 20, 26, 0.85);
}

.voice-stat-val {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
  text-shadow: 0 0 14px rgba(100, 210, 177, 0.35);
}

.voice-stat-lbl {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── 7 Capabilities Grid ── */
.capabilities-section {
  max-width: 1080px;
  margin: 140px auto;
  padding: 0 24px;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.cap-card {
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 36px;
  position: relative;
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cap-card * {
  pointer-events: none;
  position: relative;
  z-index: 3;
}

.cap-card:hover {
  border-color: rgba(100, 210, 177, 0.45);
  background: rgba(22, 26, 33, 0.92);
  box-shadow: 0 24px 50px -10px rgba(0, 0, 0, 0.8), 
              0 0 35px rgba(100, 210, 177, 0.2), 
              inset 0 1px 1px rgba(255, 255, 255, 0.12);
}

.cap-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.cap-card:hover .cap-cat {
  color: #7ef5cf;
  text-shadow: 0 0 14px rgba(100, 210, 177, 0.5);
}

.cap-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.cap-card:hover .cap-title {
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.cap-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  transition: color 0.25s ease;
}

.cap-card:hover .cap-desc {
  color: #cbd5e1;
}

.cap-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.cap-tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.cap-card:hover .cap-tag {
  background: rgba(100, 210, 177, 0.08);
  border-color: rgba(100, 210, 177, 0.3);
  color: #f1f5f9;
}

/* ── Comparison Matrix: Zenith vs Copilot & Cloud Assistants ── */
.compare-section {
  max-width: 1160px;
  margin: 140px auto;
  padding: 0 24px;
}

.compare-card {
  padding: 20px 24px 28px;
  overflow: hidden;
}

.compare-table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 820px;
}

.compare-table thead th {
  padding: 24px 20px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-medium);
  vertical-align: bottom;
}

.compare-table thead .col-dim {
  width: 27%;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.compare-table thead .col-zenith {
  width: 33%;
  background: rgba(100, 210, 177, 0.05);
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
  border-top: 1px solid var(--border-focus);
  border-left: 1px solid var(--border-focus);
  border-right: 1px solid var(--border-focus);
}

.col-header-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.brand-zenith {
  color: #ffffff;
  font-size: 18px;
}

.badge-zenith-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(100, 210, 177, 0.12);
  border: 1px solid rgba(100, 210, 177, 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.compare-table thead .col-other {
  width: 20%;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
}

.compare-table tbody tr {
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.2s ease;
}

.compare-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.compare-table tbody td {
  padding: 22px 20px;
  vertical-align: top;
}

.dim-label strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 4px;
}

.dim-label span {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.zenith-cell {
  background: rgba(100, 210, 177, 0.05);
  border-left: 1px solid var(--border-focus);
  border-right: 1px solid var(--border-focus);
}

.compare-table tbody tr:last-child .zenith-cell {
  border-bottom: 1px solid var(--border-focus);
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 14px;
}

.badge-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}

.badge-cross {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.cell-sub {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ── FAQ & Support Section ── */
.faq-section {
  max-width: 860px;
  margin: 120px auto 40px;
  padding: 0 24px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: rgba(18, 19, 24, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.faq-item:hover {
  border-color: rgba(100, 210, 177, 0.3);
  background: rgba(22, 24, 30, 0.8);
}

.faq-item[open] {
  border-color: rgba(100, 210, 177, 0.45);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 24px rgba(100, 210, 177, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-answer code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.07);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}

.faq-answer a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

.faq-answer a:hover {
  color: #8be4cb;
}

/* ── Support & Buy Me a Coffee Banner ── */
.support-coffee-banner {
  margin-top: 36px;
  padding: 36px 40px;
  border-radius: var(--radius-card);
  background: radial-gradient(ellipse at 15% 50%, rgba(255, 193, 7, 0.08) 0%, rgba(20, 21, 28, 0.75) 70%), #0f1015;
  border: 1px solid rgba(255, 193, 7, 0.22);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  transform-style: preserve-3d;
  perspective: 1100px;
}

.support-coffee-banner.tilt-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: radial-gradient(
    circle 480px at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 193, 7, 0.24),
    rgba(255, 152, 0, 0.08) 45%,
    transparent 72%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 1;
}

.support-coffee-banner.tilt-card:hover::before {
  opacity: 1;
}

.support-coffee-banner.tilt-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2) 20%, rgba(255, 193, 7, 0.5) 50%, rgba(255, 255, 255, 0.2) 80%, transparent);
  opacity: 0.35;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 2;
}

.support-coffee-banner.tilt-card:hover::after {
  opacity: 1;
}

/* 3D Depth parallax for coffee banner contents */
.support-coffee-banner.tilt-card .coffee-badge {
  transform: translateZ(16px);
  position: relative;
  z-index: 3;
}

.support-coffee-banner.tilt-card .coffee-text-block {
  transform: translateZ(12px);
  position: relative;
  z-index: 3;
}

.support-coffee-banner.tilt-card .btn-coffee {
  transform: translateZ(20px);
  position: relative;
  z-index: 4;
}

.support-coffee-banner.tilt-card:hover {
  border-color: rgba(255, 193, 7, 0.45);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 28px rgba(255, 193, 7, 0.12);
}

.coffee-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffc107;
  background: rgba(255, 193, 7, 0.12);
  border: 1px solid rgba(255, 193, 7, 0.25);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  width: fit-content;
}

.coffee-title {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.coffee-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 680px;
}

.coffee-desc strong {
  color: #ffffff;
}

.btn-coffee {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  align-self: flex-start;
  padding: 12px 24px;
  margin-top: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #FFDD00 0%, #FFB703 100%);
  color: #111216;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(255, 193, 7, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn-coffee:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 193, 7, 0.55);
  filter: brightness(1.06);
}

.coffee-btn-icon {
  font-size: 16px;
}

.coffee-btn-arrow {
  font-size: 13px;
  opacity: 0.8;
}

/* ── Final CTA ── */
.cta-section {
  max-width: 980px;
  margin: 140px auto 90px;
  padding: 0 24px;
  text-align: center;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 90px 24px 44px;
  text-align: center;
  background: rgba(12, 13, 16, 0.8);
  position: relative;
  overflow: hidden;
}

.footer-wordmark {
  position: relative;
  display: inline-block;
  font-family: var(--font-heading);
  font-size: clamp(64px, 14vw, 190px);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.9;
  user-select: none;
  margin-bottom: 40px;
  cursor: default;
  transform-style: preserve-3d;
  perspective: 1000px;
  will-change: transform, filter;

  /* Dynamic Velocity-Aware Radial Spotlight with continuous smooth alpha fade */
  background: radial-gradient(
    circle var(--spotlight-radius, 280px) at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, calc(0.05 + 0.95 * var(--spotlight-intensity, 0))) 0%,
    rgba(100, 210, 177, calc(0.05 + 0.91 * var(--spotlight-intensity, 0))) 26%,
    rgba(110, 181, 255, calc(0.05 + 0.50 * var(--spotlight-intensity, 0))) 50%,
    rgba(255, 255, 255, 0.05) 80%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  filter: drop-shadow(0 0 calc(45px * var(--spotlight-intensity, 0)) rgba(100, 210, 177, calc(0.38 * var(--spotlight-intensity, 0))));
}

/* Ambient Radial Bloom Behind the Spotlight */
.footer-wordmark::before {
  content: '';
  position: absolute;
  inset: -30px;
  background: radial-gradient(
    circle calc(var(--spotlight-radius, 280px) * 1.15) at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(100, 210, 177, 0.28) 0%,
    rgba(110, 181, 255, 0.10) 45%,
    transparent 70%
  );
  opacity: var(--spotlight-intensity, 0);
  pointer-events: none;
  z-index: -1;
  filter: blur(28px);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 800px) {
  .nav-menu { display: none; }
  .cap-grid { grid-template-columns: 1fr; }
  .voice-grid { grid-template-columns: 1fr 1fr; }
  .floating-chip { display: none; }
  .canvas-viewport { height: 380px; }
}