/* ============================================
   Orint Landing Page — Styles
   ============================================ */

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

:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #3730A3;
  --color-primary-light: #818CF8;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  --color-bg-dark: #111827;
  --color-text: #1F2937;
  --color-text-light: #6B7280;
  --color-text-on-dark: #F9FAFB;
  --color-border: #E5E7EB;
  --color-accent: #10B981;
  --color-voice: #7C3AED;
  --color-data: #0891B2;
  --color-money: #D97706;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --max-width: 1200px;
  --border-radius: 12px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-light);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--color-primary);
  background: #F3F4F6;
}

.nav-support {
  background: var(--color-primary) !important;
  color: white !important;
}

.nav-support:hover {
  background: var(--color-primary-dark) !important;
  color: white !important;
}

/* --- Hero Section --- */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  background: linear-gradient(135deg, #EEF2FF 0%, #FFFFFF 40%, #ECFDF5 100%);
  overflow: hidden;
}

.hero-logo {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  margin: 0 auto 24px;
  box-shadow: 0 4px 24px rgba(79, 70, 229, 0.15);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(79, 70, 229, 0.08);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* --- Store Buttons --- */
.store-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.store-btn svg {
  flex-shrink: 0;
}

.store-btn-primary {
  background: var(--color-primary);
  color: white;
}

.store-btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.3);
  color: white;
}

.store-btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.store-btn-secondary:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  color: var(--color-primary);
}

/* --- Screenshots Section --- */
.screenshots {
  padding: 80px 0;
  background: var(--color-bg);
}

.screenshots h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 40px;
}

.screenshot-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 16px;
}

.screenshot-scroll::-webkit-scrollbar {
  display: none;
}

.screenshot-track {
  display: flex;
  gap: 16px;
  padding: 0 4px;
}

.screenshot-card {
  flex: 0 0 auto;
  width: 200px;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
  scroll-snap-align: center;
}

.screenshot-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.screenshot-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.screenshot-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}

.dot.active {
  background: var(--color-primary);
  width: 24px;
  border-radius: 4px;
}

/* --- Privacy Promise --- */
.privacy {
  padding: 80px 0;
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  text-align: center;
}

.privacy h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.privacy p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.7;
}

.privacy-icon {
  font-size: 3rem;
  margin-bottom: 24px;
  display: block;
}

/* --- Features Section --- */
.features {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.features h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--color-bg);
  padding: 28px;
  border-radius: var(--border-radius);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 1.25rem;
}

.feature-icon.offline { background: #EEF2FF; color: var(--color-primary); }
.feature-icon.habit { background: #ECFDF5; color: var(--color-accent); }
.feature-icon.journal { background: #FFF7ED; color: #F97316; }
.feature-icon.insights { background: #F5F3FF; color: #8B5CF6; }
.feature-icon.voice { background: #F3E8FF; color: var(--color-voice); }
.feature-icon.privacy-icon-feature { background: #ECFDF5; color: #059669; }
.feature-icon.export { background: #E0F2FE; color: var(--color-data); }
.feature-icon.focus { background: #FEF3C7; color: var(--color-money); }

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- Highlight Sections (Voice, Data, Monetization) --- */
.highlight {
  padding: 80px 0;
}

.highlight-content {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.highlight-emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 16px;
}

.highlight h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.highlight p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-light);
}

.highlight-voice {
  background: linear-gradient(135deg, #F5F3FF 0%, #FFFFFF 100%);
}

.highlight-voice h2 {
  color: var(--color-voice);
}

.highlight-data {
  background: linear-gradient(135deg, #E0F2FE 0%, #FFFFFF 100%);
}

.highlight-data h2 {
  color: var(--color-data);
}

.highlight-money {
  background: linear-gradient(135deg, #FEF3C7 0%, #FFFFFF 100%);
}

.highlight-money h2 {
  color: var(--color-money);
}

/* --- Age Rating Section --- */
.age-rating {
  padding: 60px 0;
  text-align: center;
  background: var(--color-bg-alt);
}

.age-rating h2 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.age-rating > .container > p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.age-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
}

.age-sep {
  color: var(--color-border);
}

.age-store-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

.age-store-link:hover {
  color: var(--color-primary-dark);
}

/* --- FAQ Section --- */
.faq {
  padding: 80px 0;
  background: var(--color-bg);
}

.faq h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item.open {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition);
  gap: 16px;
}

.faq-question:hover {
  background: rgba(0, 0, 0, 0.02);
}

.faq-arrow {
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
}

.footer-brand img {
  border-radius: 6px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer-copy {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.8rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.15rem;
  }
  
  .hero-tagline {
    font-size: 1rem;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .footer .container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 120px 0 60px;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .nav-links {
    gap: 4px;
  }
  
  .nav-links a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  
  .store-btn {
    padding: 12px 20px;
    font-size: 0.9rem;
    width: 100%;
    justify-content: center;
  }
  
  .screenshot-card {
    width: 160px;
  }
}