/* ========================
   VIZYO — Dark Elegant Theme
   ======================== */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-tertiary: #16161f;
  --bg-card: #13131b;
  --bg-card-hover: #1a1a25;

  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-tertiary: #6b6b80;

  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-dim: rgba(99, 102, 241, 0.15);
  --accent-glow: rgba(99, 102, 241, 0.3);

  --pink: #ec4899;
  --green: #10b981;
  --amber: #f59e0b;
  --cyan: #06b6d4;
  --rose: #f43f5e;

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.15);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================
   GRADIENT TEXT
   ======================== */
.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #a78bfa 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================
   BUTTONS
   ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 500;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.03);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-dim);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

/* ========================
   NAVBAR
   ======================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 36px;
  height: 36px;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
}
.nav-links a:hover {
  color: var(--text-primary);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
  border-radius: 1px;
}
.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ========================
   HERO
   ======================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 60px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--accent-dim);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--accent-hover);
  font-weight: 500;
  margin-bottom: 28px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================
   HERO MOCKUP
   ======================== */
.hero-mockup {
  margin-top: 64px;
  perspective: 1000px;
}

.mockup-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  max-width: 800px;
  margin: 0 auto;
}

.mockup-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}
.mockup-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dots span:nth-child(1) { background: #f43f5e; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }

.mockup-url {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.03);
  padding: 4px 12px;
  border-radius: 6px;
}

.mockup-screen {
  padding: 24px;
}

.mockup-grid-videos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.mockup-video {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 32px 16px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  border: 1px solid var(--border);
}

.mockup-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mockup-name {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.mockup-mic-on {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 12px;
}

.mockup-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.mockup-ctrl-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.mockup-ctrl-btn.active {
  background: var(--accent-dim);
  border-color: rgba(99, 102, 241, 0.3);
}
.mockup-ctrl-btn.end {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
}

/* ========================
   STATS
   ======================== */
.stats {
  padding: 80px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -2px;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 24px;
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-tertiary);
  margin-top: 4px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ========================
   SECTION COMMONS
   ======================== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
}

/* ========================
   FEATURES
   ======================== */
.features {
  padding: 120px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.feature-icon.icon-pink {
  background: rgba(236, 72, 153, 0.12);
  color: var(--pink);
}
.feature-icon.icon-green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
}
.feature-icon.icon-amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--amber);
}
.feature-icon.icon-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: var(--cyan);
}
.feature-icon.icon-rose {
  background: rgba(244, 63, 94, 0.12);
  color: var(--rose);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================
   HOW IT WORKS
   ======================== */
.how-it-works {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  font-size: 64px;
  font-weight: 800;
  letter-spacing: -3px;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.3) 0%, rgba(99, 102, 241, 0.05) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1;
}

.step-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.step-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

.step-line {
  display: none;
}

/* ========================
   PLATFORMS
   ======================== */
.platforms {
  padding: 120px 0;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}
.platform-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.platform-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.06) 0%, var(--bg-card) 100%);
}

.platform-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.platform-icon {
  color: var(--accent);
  margin-bottom: 24px;
}

.platform-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.platform-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  transition: gap 0.2s;
}
.platform-link:hover {
  gap: 10px;
  color: var(--accent-hover);
}

.platform-stores {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.store-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* ========================
   SECURITY
   ======================== */
.security {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.security-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.security-content .section-tag,
.security-content .section-title,
.security-content .section-desc {
  text-align: left;
  margin-left: 0;
}

.security-content .section-desc {
  margin-bottom: 32px;
}

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

.security-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}

.security-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.shield-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shield-glow {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
  animation: shield-pulse 3s ease-in-out infinite;
}

@keyframes shield-pulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
}

.shield-icon {
  position: relative;
  filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.3));
}

.shield-check {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -45%);
}

/* ========================
   CTA
   ======================== */
.cta {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  text-align: center;
  position: relative;
}

.cta-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
}

/* ========================
   FOOTER
   ======================== */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-tertiary);
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-tertiary);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: var(--text-tertiary);
  transition: color 0.2s;
}
.footer-social a:hover {
  color: var(--text-primary);
}

/* ========================
   ANIMATIONS
   ======================== */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 1024px) {
  .features-grid,
  .platforms-grid,
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  .security-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .security-content .section-tag,
  .security-content .section-title,
  .security-content .section-desc {
    text-align: center;
  }
  .security-list {
    align-items: center;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }

  /* Mobile menu open state */
  .navbar.menu-open .nav-links,
  .navbar.menu-open .nav-actions {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }
  .navbar.menu-open .nav-links {
    padding-bottom: 8px;
  }
  .navbar.menu-open .nav-actions {
    top: calc(100% + 180px);
    padding-top: 8px;
    border-top: 1px solid var(--border);
  }
  .navbar.menu-open .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .navbar.menu-open .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
  }
  .navbar.menu-open .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-title {
    letter-spacing: -1px;
  }

  .features-grid,
  .platforms-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .stat-number {
    font-size: 36px;
  }

  .mockup-grid-videos {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 40px;
  }
  .hero-desc {
    font-size: 16px;
  }
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .mockup-grid-videos {
    grid-template-columns: 1fr;
  }
  .platform-stores {
    flex-direction: column;
    align-items: center;
  }
}