/* ============================================================
   Asset-It Design System
   Shared CSS for GitHub Pages site
   ============================================================ */

/* ----------------------------------------------------------
   1. Design Tokens (Light Mode)
   ---------------------------------------------------------- */
:root {
  --primary: #6366F1;
  --secondary: #8B5CF6;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --border: #E2E8F0;
  --gradient-start: #42A5F5;
  --gradient-end: #AB47BC;
  --nav-bg: rgba(248, 250, 252, 0.85);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(99, 102, 241, 0.1);
}

/* Dark Mode */
[data-theme="dark"] {
  --primary: #818CF8;
  --secondary: #A78BFA;
  --bg: #0F172A;
  --surface: #1E293B;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --border: #334155;
  --nav-bg: rgba(15, 23, 42, 0.85);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(129, 140, 248, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--secondary);
}

/* ----------------------------------------------------------
   3. Typography
   ---------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-primary);
  line-height: 1.25;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

p {
  color: var(--text-secondary);
}

/* ----------------------------------------------------------
   4. Layout
   ---------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--narrow {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}
.section__header p {
  margin-top: 0.75rem;
  font-size: 1.1rem;
}

/* ----------------------------------------------------------
   5. Navigation Bar
   ---------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s ease;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.125rem;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav__links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

.nav__toggle svg {
  width: 24px;
  height: 24px;
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--primary);
  background-color: var(--surface);
}

.theme-toggle .icon-sun {
  display: block;
}

.theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* ----------------------------------------------------------
   6. Mobile Navigation
   ---------------------------------------------------------- */
.nav__mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background-color: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.nav__mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.nav__mobile-menu a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav__mobile-menu a:hover {
  color: var(--primary);
}

body.nav-open {
  overflow: hidden;
}

/* ----------------------------------------------------------
   7. Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #ffffff;
  box-shadow: var(--shadow-lg);
}

.btn--primary:hover {
  color: #ffffff;
  box-shadow: 0 12px 44px rgba(99, 102, 241, 0.18);
}

.btn--outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn--outline:hover {
  background-color: var(--primary);
  color: #ffffff;
}

/* ----------------------------------------------------------
   8. Cards
   ---------------------------------------------------------- */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

/* ----------------------------------------------------------
   9. Callout
   ---------------------------------------------------------- */
.callout {
  background-color: var(--surface);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 1.25rem 1.5rem;
}

/* ----------------------------------------------------------
   10. Footer
   ---------------------------------------------------------- */
.footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.footer__brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer__tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.footer__bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ----------------------------------------------------------
   11. Phone Mockup
   ---------------------------------------------------------- */
.phone-frame {
  position: relative;
  width: 260px;
  height: 520px;
  border-radius: 32px;
  border: 4px solid #000000;
  background-color: #000000;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 24px;
  background-color: #000000;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}

.phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ----------------------------------------------------------
   12. Carousel
   ---------------------------------------------------------- */
.carousel {
  overflow: hidden;
  position: relative;
}

.carousel__track {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel__slide {
  flex: 0 0 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel__dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background-color: var(--border);
  border: none;
  cursor: pointer;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.carousel__dot.active {
  width: 24px;
  background-color: var(--primary);
}

/* ----------------------------------------------------------
   13. Form Elements
   ---------------------------------------------------------- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1.125rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background-color: var(--surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.5;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.error-msg {
  display: none;
  color: #EF4444;
  font-size: 0.8rem;
  margin-top: 0.35rem;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: #EF4444;
}

.form-group.has-error .error-msg {
  display: block;
}

/* ----------------------------------------------------------
   14. Pills
   ---------------------------------------------------------- */
.pills {
  display: flex;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px;
  gap: 4px;
}

.pill {
  flex: 1;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 11px;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease;
}

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

.pill.active {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #ffffff;
}

/* ----------------------------------------------------------
   15. Star Rating
   ---------------------------------------------------------- */
.star-rating {
  display: flex;
  direction: rtl;
  gap: 0.15rem;
}

.star-rating input {
  display: none;
}

.star-rating label {
  font-size: 2rem;
  color: var(--border);
  cursor: pointer;
  transition: color 0.15s ease;
}

.star-rating label::before {
  content: "\2605";
}

.star-rating input:checked ~ label,
.star-rating label:hover,
.star-rating label:hover ~ label {
  color: #FBBF24;
}

/* ----------------------------------------------------------
   16. Toast
   ---------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background-color: #22C55E;
  color: #ffffff;
  padding: 0.85rem 1.75rem;
  border-radius: 14px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 8px 30px rgba(34, 197, 94, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s ease;
  z-index: 2000;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

/* ----------------------------------------------------------
   17. Scroll Animations
   ---------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ----------------------------------------------------------
   18. Store Badges
   ---------------------------------------------------------- */
.store-badges {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.store-badges img {
  height: 48px;
  width: auto;
}

/* ----------------------------------------------------------
   19. Hero Background Mesh
   ---------------------------------------------------------- */
.hero-bg {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, rgba(139,92,246,0.08) 50%, rgba(66,165,245,0.05) 100%);
}
.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(99,102,241,0.12) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(139,92,246,0.08) 0%, transparent 50%);
  animation: meshFloat 20s ease-in-out infinite;
  z-index: 0;
}
@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(2%, -2%) rotate(1deg); }
  66% { transform: translate(-1%, 1%) rotate(-1deg); }
}
.hero-bg > * { position: relative; z-index: 1; }

/* ----------------------------------------------------------
   20. Feature Card Enhancements
   ---------------------------------------------------------- */
.features-grid .card {
  padding: 2.25rem 1.75rem;
}
.features-grid .card .icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.1));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
[data-theme="dark"] .features-grid .card .icon-wrap {
  background: linear-gradient(135deg, rgba(129,140,248,0.15), rgba(167,139,250,0.15));
}
.features-grid .card svg {
  width: 32px;
  height: 32px;
}

/* ----------------------------------------------------------
   21. Dark Mode Phone Glow
   ---------------------------------------------------------- */
[data-theme="dark"] .phone-frame {
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px rgba(99,102,241,0.15);
}

/* ----------------------------------------------------------
   22. Carousel Slide Spacing
   ---------------------------------------------------------- */
.carousel__slide {
  gap: 2rem;
  padding: 1rem 0;
}

/* ----------------------------------------------------------
   23. CTA Section Enhancements
   ---------------------------------------------------------- */
.cta-section {
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}
.cta-section > * { position: relative; z-index: 1; }
.cta-section h2 { font-size: 2.25rem; margin-bottom: 1rem; }
.cta-section p { font-size: 1.15rem; }

/* ----------------------------------------------------------
   24. Nav Active Indicator
   ---------------------------------------------------------- */
.nav__links a.active {
  color: var(--primary);
}

/* ----------------------------------------------------------
   25. Privacy Policy Content Spacing
   ---------------------------------------------------------- */
.policy-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.policy-content p {
  margin-bottom: 1rem;
}
.policy-content ul {
  margin: 0.75rem 0 1.25rem 1.5rem;
  list-style: disc;
}
.policy-content li {
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
}
.policy-content .callout {
  margin: 1.5rem 0;
}
.policy-content .callout h2 {
  margin-top: 0;
  border-bottom: none;
}

/* ----------------------------------------------------------
   26. Support Form Spacing
   ---------------------------------------------------------- */
.support-header {
  text-align: center;
  margin-bottom: 2.5rem;
}
.support-header h1 { margin-bottom: 0.75rem; }
.pills {
  margin-bottom: 2.5rem;
}

/* ----------------------------------------------------------
   27. Smooth Theme Transitions
   ---------------------------------------------------------- */
body, .nav, .card, .footer, .callout, .pills, .pill,
.form-group input, .form-group textarea, .phone-frame {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

/* ----------------------------------------------------------
   28. Content Link Hover Effects
   ---------------------------------------------------------- */
.policy-content a, .footer__links a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.policy-content a:hover, .footer__links a:hover {
  border-bottom-color: var(--primary);
}

/* ----------------------------------------------------------
   Responsive — Tablet (max-width: 1024px)
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.625rem;
  }

  .section {
    padding: 3.5rem 0;
  }

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

/* ----------------------------------------------------------
   20. Responsive — Mobile (max-width: 768px)
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.375rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  /* Nav: show toggle, hide desktop links */
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
  }

  /* Single column layouts */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Smaller phone mockup */
  .phone-frame {
    width: 200px;
    height: 400px;
    border-radius: 24px;
  }

  .phone-frame::before {
    width: 80px;
    height: 20px;
    border-radius: 0 0 12px 12px;
  }

  /* Pills stack vertically */
  .pills {
    flex-direction: column;
  }

  /* Store badges center on small screens */
  .store-badges {
    justify-content: center;
  }
}