/* ==========================================================================
   ZIN PREMIUM LANDING PAGE STYLESHEET - EXCLUSIVELY LIGHT MODE (CREAM & GOLD)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- 1. Design System & Variables --- */
:root {
  /* Warm Cream & Silk (Headspace & Flo inspired Light Theme) */
  --bg-primary: #faf9f6; /* Warm silk oatmeal background */
  --bg-card: #ffffff;
  --bg-card-hover: #fcfbfa;
  --border-color: rgba(166, 132, 83, 0.2);
  
  --accent-gold: #a68453;
  --accent-gold-rgb: 166, 132, 83;
  --accent-gold-hover: #be9d6e;
  
  /* Telemetry Indicators (Garmin & Samsung Connect inspired) */
  --health-green: #10b981; /* Hydration (Elfie style) */
  --health-purple: #8b5cf6; /* Sleep (Headspace style) */
  --health-amber: #f59e0b; /* Nutrition/Caffeine */
  --health-cyan: #06b6d4; /* Activity/Steps */
  
  /* Text Styles */
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #8c96a3;
  
  /* Layout tokens */
  --input-bg: #f3f4f6;
  --transition-speed: 0.3s;
  --shadow-premium: 0 15px 35px -10px rgba(166, 132, 83, 0.1);
  --glow-gold: 0 0 25px rgba(166, 132, 83, 0.1);
  --radius-premium: 32px; /* Soft round edges */
}

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

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

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

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  letter-spacing: -0.03em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

/* --- 3. Base Layout Elements --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
}

/* Header & Navigation --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(250, 249, 246, 0.85); /* rgba matching --bg-primary */
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-speed) ease;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 90px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.brand-logo-img {
  height: 38px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 40px;
  font-weight: 500;
}

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

/* Buttons */
.btn-gold {
  background-color: var(--accent-gold);
  color: #faf9f6 !important; /* contrast text light primary */
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 50px;
  border: 1px solid transparent;
  transition: all var(--transition-speed) ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(var(--accent-gold-rgb), 0.2);
}

.btn-gold:hover {
  background-color: var(--accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: var(--glow-gold);
}

.btn-outline {
  border: 1px solid var(--border-color);
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 500;
  transition: all var(--transition-speed) ease;
  cursor: pointer;
}

.btn-outline:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* --- 4. Hero Section --- */
.hero {
  padding-top: 200px;
  padding-bottom: 100px;
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 80px;
}

.hero-text h1 {
  font-size: 4rem;
  line-height: 1.05;
  margin-bottom: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 44px;
  max-width: 620px;
}

.hero-ctas {
  display: flex;
  gap: 20px;
  margin-bottom: 48px;
}

.store-badges {
  display: flex;
  gap: 16px;
}

.store-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 12px 24px;
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-speed) ease;
}

.store-badge:hover {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: var(--shadow-premium);
}

.store-badge svg {
  width: 26px;
  height: 26px;
  fill: var(--accent-gold);
}

/* Interactive Device Mock Frame with floating animation */
.device-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.device-frame {
  width: 100%;
  max-width: 320px;
  height: 640px;
  border-radius: 44px;
  border: 12px solid var(--text-primary);
  box-shadow: var(--shadow-premium), 0 20px 50px rgba(var(--accent-gold-rgb), 0.15);
  background-color: var(--bg-card);
  overflow: hidden;
  position: relative;
  animation: floatPhone 6s ease-in-out infinite;
}

.device-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@keyframes floatPhone {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(1deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

/* --- 5. Bento Grid Section (Samsung, Clue & Garmin inspired) --- */
.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-header h2 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.section-header p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bento-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-premium);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  background-color: var(--bg-card-hover);
  border-color: rgba(var(--accent-gold-rgb), 0.35);
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium), var(--glow-gold);
}

.bento-card.large {
  grid-column: span 2;
}

.card-icon {
  width: 54px;
  height: 54px;
  background: rgba(var(--accent-gold-rgb), 0.08);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  margin-bottom: 28px;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.card-content h3 {
  font-size: 1.65rem;
  margin-bottom: 12px;
}

.card-content p {
  color: var(--text-secondary);
  font-size: 0.98rem;
}

/* Bento graphics */
.card-graphic {
  margin-top: 32px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Circle Hydration Progress */
.circle-chart {
  position: relative;
  width: 110px;
  height: 110px;
}

.circle-chart svg {
  transform: rotate(-90deg);
}

.circle-bg {
  fill: none;
  stroke: var(--input-bg);
  stroke-width: 4;
}

.circle-fill {
  fill: none;
  stroke: var(--health-green);
  stroke-width: 4;
  stroke-dasharray: 100 100;
  stroke-dashoffset: 40;
}

.circle-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

/* Sleep stacked bars (Garmin & Samsung style) */
.sleep-chart-mock {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.sleep-bars {
  display: flex;
  height: 24px;
  border-radius: 12px;
  overflow: hidden;
  width: 100%;
}

.sleep-bar-deep {
  width: 35%;
  background-color: #4f46e5;
}

.sleep-bar-light {
  width: 50%;
  background-color: #6366f1;
}

.sleep-bar-rem {
  width: 15%;
  background-color: #a78bfa;
}

.sleep-legend {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Steps curve graph (Samsung Health inspired) */
.steps-chart-mock {
  width: 100%;
  height: 70px;
}

.steps-chart-mock svg {
  width: 100%;
  height: 100%;
}

/* Nutrition breakdown layout */
.nutrition-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: 100%;
}

.macro-box {
  background: var(--input-bg);
  padding: 12px;
  border-radius: 16px;
  text-align: center;
  font-size: 0.85rem;
}

.macro-name {
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.macro-val {
  font-weight: 700;
}

/* Trust Badge (Elfie Inspired) */
.trust-badge-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.badge-seal {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--health-green);
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- 6. Animated App Showcase Section --- */
.showcase-slider {
  display: flex;
  gap: 32px;
  justify-content: center;
  align-items: center;
  margin-top: 50px;
  perspective: 1200px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 16px;
  box-shadow: var(--shadow-premium);
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.6s ease;
  width: 260px;
  overflow: hidden;
  cursor: pointer;
  flex-shrink: 0;
}

/* 3D tilt defaults for premium layout look */
.showcase-card.phone-left {
  transform: rotateY(15deg) rotateZ(-2deg) translateY(10px);
}

.showcase-card.phone-center {
  transform: scale(1.05) translateY(-10px);
  z-index: 10;
  border-color: var(--accent-gold);
}

.showcase-card.phone-right {
  transform: rotateY(-15deg) rotateZ(2deg) translateY(10px);
}

.showcase-card:hover {
  transform: scale(1.1) rotateY(0deg) rotateZ(0deg) translateY(-15px) !important;
  box-shadow: 0 30px 60px -15px rgba(var(--accent-gold-rgb), 0.25), var(--glow-gold);
}

.showcase-img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  display: block;
}

/* Tablet Showcase */
.tablet-showcase-row {
  margin-top: 60px;
  display: flex;
  justify-content: center;
  width: 100%;
}

.tablet-showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-premium);
  padding: 24px;
  box-shadow: var(--shadow-premium);
  max-width: 800px;
  width: 100%;
  transition: transform 0.5s ease;
  animation: floatTablet 8s ease-in-out infinite alternate;
}

.tablet-showcase-card:hover {
  transform: scale(1.02);
}

.tablet-showcase-img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  display: block;
}

@keyframes floatTablet {
  0% { transform: translateY(0px) rotate(0.5deg); }
  100% { transform: translateY(-10px) rotate(-0.5deg); }
}

/* --- 7. Control Panel --- */
.control-panel {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 100px 0;
}

.panel-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
}

.panel-layout h2 {
  font-size: 2.75rem;
}

.switch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 400px;
}

@media (min-width: 600px) {
  .switch-grid {
    grid-template-columns: repeat(3, 1fr);
    max-width: 100%;
  }
}

.switch-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.switch-box label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.switch-box select {
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 14px 20px;
  border-radius: 16px;
  outline: none;
  font-size: 1rem;
  transition: border-color var(--transition-speed) ease;
  cursor: pointer;
  width: 100%;
}

.switch-box select:focus {
  border-color: var(--accent-gold);
}

/* --- 8. Pricing Section --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-premium);
  padding: 60px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 520px;
  transition: all var(--transition-speed) ease;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-premium), var(--glow-gold);
}

.pricing-card.premium {
  border-color: rgba(var(--accent-gold-rgb), 0.5);
  box-shadow: var(--shadow-premium);
}

.pricing-card.premium::after {
  content: "RECOMMENDED";
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background-color: var(--accent-gold);
  color: #faf9f6; /* light primary matching gold text contrast */
  padding: 6px 14px;
  border-radius: 30px;
}

.pricing-header h3 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.pricing-header p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  margin-bottom: 32px;
}

.pricing-amount {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 32px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 48px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.98rem;
}

.pricing-features li svg {
  width: 20px;
  height: 20px;
  fill: var(--accent-gold);
  flex-shrink: 0;
}

.pricing-card .btn-gold,
.pricing-card .btn-outline {
  width: 100%;
  justify-content: center;
}

/* --- 9. Legal Suite & Footer --- */
.legal-footer {
  background-color: #eaecef; /* Warm dark gray block under oatmeal body */
  border-top: 1px solid var(--border-color);
  padding: 100px 0 50px 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.footer-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-info p {
  max-width: 440px;
  margin-top: 20px;
  color: var(--text-muted);
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-links-col h4 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.footer-links-col a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 50px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

.regulatory-footnote {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.regulatory-value {
  color: var(--accent-gold);
  font-weight: 600;
}

/* --- 10. Legal Content Layout --- */
.legal-page {
  padding-top: 160px;
}

.legal-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-premium);
  padding: 60px;
  margin-bottom: 50px;
  box-shadow: var(--shadow-premium);
}

.legal-card h1 {
  font-size: 3rem;
  margin-bottom: 16px;
}

.legal-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 40px;
  display: flex;
  gap: 32px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.legal-content h2 {
  font-size: 1.65rem;
  margin: 40px 0 20px 0;
  color: var(--accent-gold);
}

.legal-content p {
  margin-bottom: 20px;
  color: var(--text-secondary);
  text-align: justify;
}

.legal-content ul {
  margin-left: 28px;
  margin-bottom: 32px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- 11. Responsive Design --- */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: 1fr 1fr;
  }
  .bento-card.large {
    grid-column: span 2;
  }
  
  .showcase-slider {
    flex-direction: column;
    align-items: center;
    gap: 40px;
  }
  .showcase-card.phone-left,
  .showcase-card.phone-right,
  .showcase-card.phone-center {
    transform: none !important;
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  
  /* Navigation Bar optimization for Mobile */
  .nav-links {
    display: none; /* Hide navigation links to fit smaller width */
  }
  nav {
    height: 70px;
  }
  .brand-logo {
    font-size: 1.35rem;
    gap: 8px;
  }
  .brand-logo-img {
    height: 30px;
  }
  .btn-gold {
    padding: 10px 20px;
    font-size: 0.88rem;
  }
  
  /* Hero Section optimization for Mobile */
  .hero {
    padding-top: 140px;
    padding-bottom: 60px;
  }
  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
    line-height: 1.1;
  }
  
  .hero-text p {
    font-size: 1.05rem;
    margin-bottom: 32px;
  }
  
  .hero-ctas, .store-badges {
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
  }
  
  /* Device mockup scaling on small screens */
  .device-frame {
    max-width: 280px;
    height: 560px;
    border-radius: 36px;
    border-width: 10px;
  }
  
  /* Bento Grid optimization for Mobile */
  .section-header h2 {
    font-size: 2.25rem;
  }
  .section-header p {
    font-size: 1.05rem;
  }
  .bento-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .bento-card {
    padding: 28px;
    min-height: 300px;
  }
  .bento-card.large {
    grid-column: span 1;
    min-height: 300px;
  }
  
  /* Tablet display scaling on Mobile */
  .tablet-showcase-card {
    padding: 12px;
    border-radius: 20px;
  }
  
  .panel-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .panel-layout h2 {
    font-size: 2rem;
  }
  
  /* Pricing Section optimization for Mobile */
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 100%;
    gap: 24px;
  }
  .pricing-card {
    padding: 32px;
    min-height: auto;
  }
  .pricing-amount {
    font-size: 2.75rem;
    margin-bottom: 24px;
  }
  .pricing-features {
    margin-bottom: 32px;
  }
  
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 45px;
  }
  .footer-links {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  
  /* Legal pages formatting on Mobile */
  .legal-page {
    padding-top: 120px;
  }
  .legal-card {
    padding: 24px;
  }
  .legal-card h1 {
    font-size: 2rem;
  }
  .legal-meta {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
  }
}