/* Volo Landing Page - Clean, Modern Design */
:root {
  --bg: #ffffff;
  --bg-alt: #f8f9fc;
  --bg-dark: #1a1a2e;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --border: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius: 16px;
  --radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 48px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 20px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: white;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

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

.nav-links a {
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.nav-cta {
  display: flex;
  gap: 12px;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  position: relative;
}

.store-badge img {
  height: 40px;
}

.store-badge.large img {
  height: 50px;
}

.store-badge.small img {
  height: 36px;
}

.store-badge.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.coming-soon {
  position: absolute;
  bottom: -8px;
  right: 8px;
  background: var(--accent);
  color: white;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
}

/* Hero Section */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.social-proof {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.avatar-stack {
  display: flex;
}

.avatar-stack img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid white;
  margin-left: -8px;
  object-fit: cover;
}

.avatar-stack img:first-child {
  margin-left: 0;
}

.proof-text {
  font-size: 14px;
  color: var(--text-muted);
}

.proof-text strong {
  color: var(--text);
}

.hero h1 {
  font-size: 52px;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}

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

.hero-preview {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 320px;
  height: auto;
  border-radius: 40px;
  box-shadow: var(--shadow-lg);
}

/* Features Tabs Section */
.features-tabs {
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.features-tabs h2 {
  font-size: 36px;
  margin-bottom: 40px;
}

.tabs-container {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 32px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 24px;
}

.tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  background: white;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  background: var(--accent);
  color: white;
}

.tab svg {
  width: 18px;
  height: 18px;
}

.tab-content {
  display: none;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

.tab-content.active {
  display: block;
}

/* Platforms Section */
.platforms {
  padding: 80px 24px;
  background: var(--bg-alt);
}

.platforms h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 48px;
}

.platform-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.platform-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.platform-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.platform-card.large {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.platform-card.highlight {
  border: 2px dashed var(--border);
  background: transparent;
  box-shadow: none;
}

.platform-card.highlight:hover {
  transform: none;
  box-shadow: none;
}

.platform-info h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.platform-info p {
  color: var(--text-muted);
  font-size: 15px;
}

.platform-visual img {
  width: 200px;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
}

.badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
}

/* Use Cases Section */
.use-cases {
  max-width: 1000px;
  margin: 0 auto;
  padding: 80px 24px;
}

.use-cases h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 40px;
}

.use-case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 32px;
}

.use-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid var(--border);
  background: white;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.use-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.use-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.use-tab svg {
  width: 18px;
  height: 18px;
}

.use-case-content {
  min-height: 280px;
}

.use-content {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.use-content.active {
  display: grid;
}

.use-card {
  background: var(--bg-alt);
  padding: 24px;
  border-radius: var(--radius);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s;
}

.use-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.use-card h4 {
  font-size: 18px;
  margin-bottom: 12px;
}

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

/* Section Subtitle */
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  margin-top: -24px;
  margin-bottom: 40px;
}

/* Feature Grid Section (9 AI Features) */
.feature-grid-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 80px 24px;
}

.feature-grid-section h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-alt);
  padding: 28px;
  border-radius: var(--radius);
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  color: var(--accent);
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Staggered animation for feature cards */
.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.05s; }
.feature-card:nth-child(3) { transition-delay: 0.1s; }
.feature-card:nth-child(4) { transition-delay: 0.15s; }
.feature-card:nth-child(5) { transition-delay: 0.2s; }
.feature-card:nth-child(6) { transition-delay: 0.25s; }
.feature-card:nth-child(7) { transition-delay: 0.3s; }
.feature-card:nth-child(8) { transition-delay: 0.35s; }
.feature-card:nth-child(9) { transition-delay: 0.4s; }

/* AI Assistants Section */
.assistants-section {
  padding: 80px 24px;
  background: var(--bg-alt);
}

.assistants-section h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 48px;
}

.assistant-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.assistant-card {
  background: white;
  padding: 32px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.assistant-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.assistant-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.assistant-avatar {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: white;
}

.assistant-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.assistant-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Staggered animation for assistant cards */
.assistant-card:nth-child(1) { transition-delay: 0s; }
.assistant-card:nth-child(2) { transition-delay: 0.1s; }
.assistant-card:nth-child(3) { transition-delay: 0.2s; }
.assistant-card:nth-child(4) { transition-delay: 0.3s; }

/* Quick Tasks Section */
.quick-tasks {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 24px;
}

.quick-tasks h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 48px;
}

.task-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.task-card {
  background: var(--bg-alt);
  padding: 32px 24px;
  border-radius: var(--radius);
  text-align: center;
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.task-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.task-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.task-icon {
  width: 56px;
  height: 56px;
  background: white;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: var(--shadow);
  color: var(--accent);
}

.task-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.task-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Staggered animation for task cards */
.task-card:nth-child(1) { transition-delay: 0s; }
.task-card:nth-child(2) { transition-delay: 0.1s; }
.task-card:nth-child(3) { transition-delay: 0.2s; }

/* Dark Mode Feature */
.dark-mode-feature {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-dark), #2d2d44);
  border-radius: var(--radius);
  margin-left: 24px;
  margin-right: 24px;
  color: white;
}

.dark-mode-content {
  padding: 40px;
}

.feature-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.dark-mode-content h2 {
  font-size: 42px;
  margin-bottom: 16px;
  line-height: 1.1;
}

.dark-mode-content p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
}

.dark-mode-preview {
  padding: 40px;
  display: flex;
  justify-content: center;
}

.dark-mode-preview img {
  max-width: 280px;
  border-radius: 32px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* FAQ Section */
.faq {
  max-width: 700px;
  margin: 0 auto;
  padding: 80px 24px;
}

.faq h2 {
  font-size: 32px;
  text-align: center;
  margin-bottom: 40px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  overflow: hidden;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
}

.faq-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--text-muted);
  transition: transform 0.2s;
}

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

.faq-item p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* Final CTA */
.final-cta {
  padding: 80px 24px;
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.1), transparent 50%);
}

.cta-content {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.rating-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 32px;
}

.laurel {
  font-size: 48px;
}

.rating-info {
  text-align: center;
}

.stars {
  color: #fbbf24;
  font-size: 24px;
  letter-spacing: 4px;
  margin-bottom: 8px;
}

.rating-info h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.cta-subtitle {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 24px;
}

.store-ratings {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.store-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 14px;
}

.store-rating svg {
  color: var(--text);
}

.divider {
  color: var(--text-muted);
}

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

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 60px 24px 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .logo-icon {
  background: white;
  color: var(--accent);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}

.footer-stores {
  display: flex;
  gap: 12px;
}

.footer-links-group h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: white;
}

.footer-links-group ul {
  list-style: none;
}

.footer-links-group li {
  margin-bottom: 12px;
}

.footer-links-group a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links-group a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 14px;
}

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

.social-links a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}

.social-links a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-desc {
    max-width: 100%;
  }

  .hero-cta {
    justify-content: center;
  }

  .social-proof {
    justify-content: center;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .assistant-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

  .platform-card.large {
    grid-column: span 1;
    grid-template-columns: 1fr;
    text-align: center;
  }

  .platform-visual {
    order: -1;
  }

  .use-content {
    grid-template-columns: 1fr;
  }

  .dark-mode-feature {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .footer-stores {
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 36px;
  }

  .tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .tab {
    justify-content: center;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .assistant-grid {
    grid-template-columns: 1fr;
  }

  .task-grid {
    grid-template-columns: 1fr;
  }

  .use-case-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .use-tab {
    justify-content: center;
  }

  .dark-mode-feature {
    margin-left: 16px;
    margin-right: 16px;
    padding: 40px 20px;
  }

  .dark-mode-content h2 {
    font-size: 32px;
  }

  .rating-badge {
    flex-direction: column;
    gap: 12px;
  }

  .laurel {
    display: none;
  }
}

/* Animation delays for staggered reveals */
.platform-card:nth-child(1) { transition-delay: 0s; }
.platform-card:nth-child(2) { transition-delay: 0.1s; }
.platform-card:nth-child(3) { transition-delay: 0.2s; }
.platform-card:nth-child(4) { transition-delay: 0.3s; }

.use-card:nth-child(1) { transition-delay: 0s; }
.use-card:nth-child(2) { transition-delay: 0.1s; }
.use-card:nth-child(3) { transition-delay: 0.2s; }

.faq-item:nth-child(1) { transition-delay: 0s; }
.faq-item:nth-child(2) { transition-delay: 0.05s; }
.faq-item:nth-child(3) { transition-delay: 0.1s; }
.faq-item:nth-child(4) { transition-delay: 0.15s; }
.faq-item:nth-child(5) { transition-delay: 0.2s; }