/* 
   GIGI PT - Liquid Glass Design System
   Based on DESIGN.md (Apple Style) and SwiftUI Liquid Glass aesthetic.
*/

:root {
  /* Colors from DESIGN.md */
  --primary: #0066cc;
  --primary-focus: #0071e3;
  --primary-on-dark: #2997ff;
  --ink: #1d1d1f;
  --body: #1d1d1f;
  --body-on-dark: #ffffff;
  --body-muted: #cccccc;
  --canvas: #ffffff;
  --canvas-parchment: #f5f5f7;
  --surface-pearl: #fafafc;
  --surface-tile-1: #272729;
  --surface-tile-2: #2a2a2c;
  --surface-tile-3: #252527;
  --surface-black: #000000;
  --hairline: #e0e0e0;
  --divider-soft: rgba(0, 0, 0, 0.04);
  
  /* SwiftUI Liquid Glass additions */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-dark: rgba(29, 29, 31, 0.8);
  --glass-blur: 20px;
  --glass-saturate: 180%;
  
  /* Border Radius from DESIGN.md */
  --radius-sm: 8px;
  --radius-md: 11px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  
  /* Spacing from DESIGN.md */
  --spacing-section: 80px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: "SF Pro Text", "Inter", system-ui, -apple-system, sans-serif;
  font-size: 17px; /* Apple standard */
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--body);
  background-color: var(--canvas);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: "SF Pro Display", "Inter", system-ui, -apple-system, sans-serif;
  margin: 0;
  font-weight: 600;
}

.hero-display {
  font-size: clamp(34px, 8vw, 56px);
  line-height: 1.07;
  letter-spacing: -0.02em; /* Apple tight */
}

.display-lg {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  line-height: 1.1;
}

.lead {
  font-size: clamp(18px, 2.5vw, 24px);
  color: #86868b;
  max-width: 800px;
  margin-bottom: 40px;
  line-height: 1.4;
}

.tagline {
  font-size: clamp(17px, 3vw, 21px);
  line-height: 1.19;
  font-weight: 600;
}

.lead {
  font-size: clamp(21px, 4vw, 28px);
  line-height: 1.14;
  font-weight: 400;
  color: var(--ink);
}

/* Global Nav */
.global-nav {
  background-color: var(--surface-black);
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.global-nav-content {
  width: 100%;
  max-width: 1024px;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.global-nav a {
  color: #d2d2d7;
  text-decoration: none;
  font-size: 12px;
  letter-spacing: -0.12px;
  transition: color 0.2s;
}

.global-nav a:hover {
  color: #fff;
}

/* Sub Nav Frosted */
.sub-nav {
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 44px;
  z-index: 99;
  border-bottom: 0.5px solid var(--hairline);
}

.sub-nav-content {
  width: 100%;
  max-width: 1024px;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sub-nav .brand-name {
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
}

.sub-nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.sub-nav-links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 12px;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: 8px;
}

/* Product Tiles (Full Bleed) */
.product-tile {
  width: 100%;
  padding: clamp(80px, 12vw, 160px) 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

.tile-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Desktop Split Layouts */
@media (min-width: 1069px) {
  .product-tile.split .tile-container {
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
    gap: 60px;
  }
  
  .product-tile.split .tile-content {
    flex: 1;
    max-width: 500px;
    margin-bottom: 0;
    text-align: left;
  }
  
  .product-tile.split .video-container {
    flex: 1.2;
    margin-top: 0;
  }

  .product-tile.split-reverse .tile-container {
    flex-direction: row-reverse;
  }
}

.product-tile-light {
  background-color: var(--canvas);
}

.product-tile-parchment {
  background-color: var(--canvas-parchment);
}

.product-tile-dark {
  background-color: var(--surface-tile-1);
  color: var(--body-on-dark);
}

.product-tile-dark .lead {
  color: var(--body-muted);
}

.tile-content {
  max-width: 800px;
  margin-bottom: 40px;
}

.tile-actions {
  display: flex;
  gap: 20px;
  margin-top: 24px;
}

.product-render {
  width: 100%;
  max-width: 900px;
  margin-top: 40px;
  filter: drop-shadow(rgba(0, 0, 0, 0.22) 3px 5px 30px);
}

/* Buttons */
.button-primary {
  background-color: var(--primary);
  color: #fff;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 400;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  border: none;
  cursor: pointer;
}

.button-primary:active {
  transform: scale(0.95);
}

.button-secondary-pill {
  background-color: transparent;
  color: var(--primary);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  border: 1px solid var(--primary);
  transition: transform 0.2s;
  display: inline-block;
}

.button-secondary-pill:active {
  transform: scale(0.95);
}

.button-secondary-pill.on-dark {
  color: var(--primary-on-dark);
  border-color: var(--primary-on-dark);
}

/* Grid Components */
.utility-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  width: 100%;
  margin-top: 60px;
}

@media (min-width: 734px) {
  .utility-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.store-card {
  background-color: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: left;
  transition: transform 0.3s ease;
}

.store-card:hover {
  transform: translateY(-4px);
}

.store-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.store-card p {
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 16px;
}

.link-blue {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
}

.link-blue:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  background-color: var(--canvas-parchment);
  padding: 64px 20px;
  color: #7a7a7a;
  font-size: 12px;
}

.footer-content {
  max-width: 1024px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.footer-column h4 {
  color: var(--ink);
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-column a {
  color: inherit;
  text-decoration: none;
}

.footer-column a:hover {
  text-decoration: underline;
  color: var(--ink);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade {
  animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Liquid Glass Effects */
.liquid-glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

/* Responsive */
@media (max-width: 734px) {
  .product-render { margin-top: 20px; }
  .tile-actions { flex-direction: column; width: 100%; align-items: center; }
  .button-primary, .button-secondary-pill { width: 100%; text-align: center; }
  .badge-container { flex-direction: column; width: 100%; }

  .mobile-menu-toggle {
    display: block;
  }
  
  .sub-nav-links {
    position: absolute;
    top: 52px;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    display: none;
    border-bottom: 0.5px solid var(--hairline);
  }
  
  .sub-nav-links.is-open {
    display: flex;
  }
}

@media (min-width: 1441px) {
  .tile-container {
    max-width: 1440px;
  }
}