/* =============================================
   ZENTRO BROWSER — Shared Design System
   Based on DESIGN.md (Apple-inspired)
   ============================================= */

:root {
  /* Backgrounds */
  --bg-dark: #0a0a0a;
  --bg-light: #f5f5f7;
  --bg-card-dark: #1c1c1e;
  --bg-card-dark-2: #2c2c2e;

  /* Text */
  --text-white: #ffffff;
  --text-dark: #1d1d1f;
  --text-secondary-dark: rgba(255, 255, 255, 0.72);
  --text-secondary-light: rgba(0, 0, 0, 0.64);
  --text-tertiary: rgba(255, 255, 255, 0.40);

  /* Accent — Zentro Purple */
  --accent: #7C4DFF;
  --accent-hover: #6A3DE8;
  --accent-dark-link: #a78bff;
  --accent-light-link: #5e35b1;

  /* Navigation */
  --nav-bg: rgba(10, 10, 10, 0.85);

  /* Shadow */
  --card-shadow: rgba(0, 0, 0, 0.32) 3px 5px 30px 0px;

  /* Typography */
  --font-display: -apple-system, "SF Pro Display", "Pretendard Variable", "Inter", Helvetica, Arial, sans-serif;
  --font-text: -apple-system, "SF Pro Text", "Pretendard Variable", "Inter", Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--text-dark);
  background: var(--bg-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--font-text); border: none; outline: none; }

/* =============================================
   NAVIGATION
   ============================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  height: 52px;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.nav-logo-mark {
  width: 22px;
  height: 22px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-mark svg { width: 14px; height: 14px; }

.nav-wordmark {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-white);
  letter-spacing: -0.4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.80);
  letter-spacing: -0.08px;
  transition: color 0.2s;
}

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

.nav-cta {
  font-size: 13px;
  font-weight: 400;
  background: var(--accent);
  color: var(--text-white);
  padding: 6px 16px;
  border-radius: 980px;
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--accent-hover); color: var(--text-white); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.8);
  border-radius: 2px;
  transition: all 0.3s;
}

/* =============================================
   SECTION BASE
   ============================================= */
.section {
  width: 100%;
  padding: 120px 24px;
}

.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-light { background: var(--bg-light); color: var(--text-dark); }
.section-card { background: var(--bg-card-dark); color: var(--text-white); }

.container {
  max-width: 980px;
  margin: 0 auto;
}

.container-wide {
  max-width: 1200px;
  margin: 0 auto;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */
.headline-hero {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 600;
  line-height: 1.07;
  letter-spacing: -0.28px;
  color: var(--text-white);
}

.headline-section {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.10;
  letter-spacing: -0.2px;
}

.headline-card {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: -0.1px;
}

.tagline {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.subtitle {
  font-family: var(--font-text);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.374px;
  color: var(--text-secondary-dark);
  margin-top: 16px;
}

.subtitle-light {
  color: var(--text-secondary-light);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 17px;
  font-weight: 400;
  padding: 12px 28px;
  border-radius: 980px;
  border: none;
  transition: background 0.2s, transform 0.15s;
  letter-spacing: -0.2px;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-dark-link);
  font-size: 17px;
  font-weight: 400;
  padding: 12px 28px;
  border-radius: 980px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: border-color 0.2s, color 0.2s, transform 0.15s;
  letter-spacing: -0.2px;
}
.btn-outline:hover { border-color: rgba(255,255,255,0.4); color: #fff; transform: translateY(-1px); }

.btn-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.learn-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 17px;
  font-weight: 400;
  color: var(--accent-dark-link);
  letter-spacing: -0.2px;
  transition: color 0.2s;
}
.learn-more:hover { color: #fff; }
.learn-more svg { width: 14px; height: 14px; transition: transform 0.2s; }
.learn-more:hover svg { transform: translateX(3px); }

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse at center, rgba(124, 77, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-mockup {
  margin-top: 72px;
  width: 100%;
  max-width: 900px;
  background: #1a1a1e;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 40px 120px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,255,255,0.04);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.mockup-bar {
  height: 36px;
  background: #111114;
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green { background: #28c840; }

.mockup-url {
  flex: 1;
  margin: 0 16px;
  height: 22px;
  background: rgba(255,255,255,0.06);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0;
}

.mockup-body {
  height: 480px;
  background: #0d0d10;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.mockup-video {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0f0f14 0%, #1a1a2e 50%, #0f0f14 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.mockup-video-inner {
  text-align: center;
}

.mockup-play {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  backdrop-filter: blur(8px);
}

.mockup-play svg { width: 28px; height: 28px; color: white; }

.mockup-video-label {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.2px;
}

.mockup-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(124, 77, 255, 0.85);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  letter-spacing: 0.3px;
}

/* =============================================
   FEATURE CARDS GRID
   ============================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 64px;
}

.feature-card {
  background: var(--bg-card-dark);
  border-radius: 18px;
  padding: 36px 32px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform 0.3s, border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124,77,255,0.4), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,77,255,0.2);
}

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

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(124, 77, 255, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent-dark-link);
}

.feature-icon svg { width: 22px; height: 22px; }

.feature-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.2;
  letter-spacing: -0.15px;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-secondary-dark);
  letter-spacing: -0.15px;
}

/* =============================================
   STEPS SECTION
   ============================================= */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 72px;
}

.step {
  position: relative;
  padding-top: 8px;
}

.step-number {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.step-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.15;
  letter-spacing: -0.2px;
  margin-bottom: 14px;
}

.step-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-secondary-dark);
  letter-spacing: -0.2px;
}

/* =============================================
   ENGINE CARDS
   ============================================= */
.engines-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 64px;
}

.engine-card {
  background: rgba(255,255,255,0.04);
  border-radius: 20px;
  padding: 40px 32px;
  border: 1px solid rgba(255,255,255,0.07);
  text-align: center;
  transition: background 0.3s, border-color 0.3s;
}

.engine-card:hover {
  background: rgba(124,77,255,0.08);
  border-color: rgba(124,77,255,0.2);
}

.engine-emoji {
  font-size: 36px;
  margin-bottom: 16px;
  display: block;
}

.engine-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
  letter-spacing: -0.1px;
}

.engine-tagline {
  font-size: 14px;
  color: var(--text-secondary-dark);
  margin-bottom: 20px;
  line-height: 1.5;
  letter-spacing: -0.1px;
}

.engine-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--accent-dark-link);
}

.toggle-pill {
  width: 38px;
  height: 22px;
  background: var(--accent);
  border-radius: 11px;
  position: relative;
  flex-shrink: 0;
}

.toggle-pill::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  top: 3px;
  right: 3px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* =============================================
   CUSTOMIZATION SECTION
   ============================================= */
.custom-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.custom-features {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.custom-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  color: var(--text-secondary-dark);
  letter-spacing: -0.15px;
}

.custom-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.theme-preview {
  background: #111114;
  border-radius: 20px;
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.07);
}

.theme-swatches {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
}

.swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.swatch:hover { transform: scale(1.15); }
.swatch.active { box-shadow: 0 0 0 3px white, 0 2px 8px rgba(0,0,0,0.4); }

.theme-preview-ui {
  background: #0a0a0a;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}

.theme-preview-bar {
  height: 32px;
  background: #111;
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.theme-preview-bar span {
  font-size: 11px;
  color: rgba(255,255,255,0.25);
  flex: 1;
  text-align: center;
}

.preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}

.theme-preview-content {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
}

.preview-bar-el {
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.08);
}

/* =============================================
   DOWNLOAD CTA SECTION
   ============================================= */
.cta-section {
  text-align: center;
  padding: 160px 24px;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at bottom, rgba(124, 77, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-version {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  margin-top: 24px;
  letter-spacing: -0.1px;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: #0a0a0a;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 48px 24px 40px;
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-brand-mark {
  width: 20px;
  height: 20px;
  background: var(--accent);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
}

.footer-tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  letter-spacing: -0.1px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  transition: color 0.2s;
  letter-spacing: -0.1px;
}

.footer-links a:hover { color: var(--text-white); }

.footer-right {
  text-align: right;
}

.footer-made {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  letter-spacing: -0.1px;
}

.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.2);
  margin-top: 8px;
  letter-spacing: -0.08px;
}

/* =============================================
   PAGE HERO — Inner pages
   ============================================= */
.page-hero {
  padding: 160px 24px 100px;
  text-align: center;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(124, 77, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

/* =============================================
   SCROLL ANIMATIONS
   ============================================= */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }

/* =============================================
   DIVIDER
   ============================================= */
.section-divider {
  width: 100%;
  height: 1px;
  background: rgba(255,255,255,0.06);
}

/* =============================================
   DOWNLOAD PAGE SPECIFIC
   ============================================= */
.download-card {
  background: var(--bg-card-dark);
  border-radius: 24px;
  padding: 56px 48px;
  border: 1px solid rgba(255,255,255,0.07);
  text-align: center;
  max-width: 560px;
  margin: 64px auto 0;
  box-shadow: var(--card-shadow);
}

.download-os-icon {
  font-size: 56px;
  margin-bottom: 20px;
  display: block;
}

.download-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}

.download-meta {
  font-size: 14px;
  color: var(--text-secondary-dark);
  margin-bottom: 32px;
  letter-spacing: -0.1px;
}

.req-list {
  list-style: none;
  background: rgba(255,255,255,0.03);
  border-radius: 14px;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 40px;
  text-align: left;
}

.req-list li {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-secondary-dark);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  letter-spacing: -0.1px;
}

.req-list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.req-list li span:last-child {
  color: var(--text-white);
  font-weight: 500;
}

.coming-soon-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.coming-soon-card {
  background: rgba(255,255,255,0.03);
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid rgba(255,255,255,0.05);
  text-align: center;
}

.coming-soon-os {
  font-size: 32px;
  margin-bottom: 10px;
}

.coming-soon-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-white);
  margin-bottom: 4px;
}

.coming-soon-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-dark-link);
  background: rgba(124,77,255,0.12);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* =============================================
   NAV — Real Logo Image
   ============================================= */
.nav-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: cover;
  flex-shrink: 0;
}

/* =============================================
   FOOTER — Real Logo Image
   ============================================= */
.footer-logo-img {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  object-fit: cover;
  flex-shrink: 0;
}

/* =============================================
   HERO — Real Screenshot
   ============================================= */
.hero-screenshot {
  margin-top: 72px;
  width: 100%;
  max-width: 900px;
  position: relative;
  z-index: 1;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 40px 120px rgba(0,0,0,0.75), 0 0 0 1px rgba(255,255,255,0.07);
}

.hero-screenshot img {
  width: 100%;
  display: block;
  border-radius: 14px;
}

/* =============================================
   CORE FEATURE SECTIONS
   ============================================= */
.feature-section {
  background: #0a0a0a;
  padding: 0;
  border-top: 1px solid rgba(255,255,255,0.055);
}

.feature-section-alt {
  background: #0d0d11;
}

.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  align-items: center;
  min-height: 640px;
}

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

/* Text side */
.feature-text {
  padding: 80px 64px 80px 48px;
}

.feature-split-reverse .feature-text {
  padding: 80px 48px 80px 64px;
}

.feature-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-headline {
  font-family: var(--font-display);
  font-size: clamp(30px, 3.5vw, 48px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.25px;
  color: var(--text-white);
  margin-bottom: 24px;
}

.feature-body {
  font-size: 16px;
  line-height: 1.65;
  color: rgba(255,255,255,0.62);
  letter-spacing: -0.2px;
  margin-bottom: 28px;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.feature-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: rgba(255,255,255,0.58);
  letter-spacing: -0.1px;
}

.feature-bullets li::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Visual side */
.feature-visual {
  position: relative;
  height: 100%;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 32px;
  background: rgba(255,255,255,0.015);
  border-left: 1px solid rgba(255,255,255,0.055);
}

.feature-split-reverse .feature-visual {
  border-left: none;
  border-right: 1px solid rgba(255,255,255,0.055);
}

.feature-img {
  width: 100%;
  max-width: 520px;
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.65), 0 0 0 1px rgba(255,255,255,0.06);
  display: block;
}

.feature-video {
  width: 100%;
  max-width: 520px;
  object-fit: cover;
}

.feature-badge {
  position: absolute;
  bottom: 28px;
  right: 28px;
  background: rgba(124, 77, 255, 0.88);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  letter-spacing: 0.2px;
  pointer-events: none;
}

/* =============================================
   SECONDARY FEATURES GRID
   ============================================= */
.secondary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 64px;
}

.secondary-card {
  background: rgba(255,255,255,0.034);
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}

.secondary-card:hover {
  background: rgba(124,77,255,0.07);
  border-color: rgba(124,77,255,0.18);
  transform: translateY(-3px);
}

.secondary-icon {
  width: 40px;
  height: 40px;
  background: rgba(124, 77, 255, 0.11);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-dark-link);
}

.secondary-icon svg { width: 20px; height: 20px; }

.secondary-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
  letter-spacing: -0.1px;
}

.secondary-desc {
  font-size: 14px;
  line-height: 1.55;
  color: rgba(255,255,255,0.5);
  letter-spacing: -0.1px;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 860px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: 48px; }
  .engines-grid { grid-template-columns: 1fr; }
  .custom-split { grid-template-columns: 1fr; gap: 48px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-right { text-align: left; }
  .coming-soon-grid { grid-template-columns: repeat(2, 1fr); }
  .secondary-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-split {
    grid-template-columns: 1fr;
    direction: ltr;
    min-height: unset;
  }
  .feature-split-reverse { direction: ltr; }
  .feature-text { padding: 56px 32px 32px; }
  .feature-split-reverse .feature-text { padding: 56px 32px 32px; }
  .feature-visual {
    border-left: none !important;
    border-right: none !important;
    border-top: 1px solid rgba(255,255,255,0.055);
    min-height: 300px;
    padding: 32px 24px;
  }
  .feature-split-reverse .feature-visual { border-right: none; }
}

@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
  .secondary-grid { grid-template-columns: 1fr; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .btn-group { flex-direction: column; align-items: center; }
  .section { padding: 80px 20px; }
  .page-hero { padding: 120px 20px 80px; }
  .download-card { padding: 36px 24px; }
  .coming-soon-grid { grid-template-columns: 1fr; }
  .feature-text { padding: 40px 20px 24px; }
  .feature-split-reverse .feature-text { padding: 40px 20px 24px; }
  .feature-visual { padding: 24px 16px; }
}

/* Mobile nav open state */
.nav.mobile-open .nav-links {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 52px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(20px);
  padding: 24px;
  gap: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}