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

:root {
  /* Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f7f9fa;
  --bg-dark: #0f1115;
  --bg-dark-secondary: #1a1c23;
  --text-main: #1a1c23;
  --text-muted: #6b7280;
  --text-light: #f3f4f6;
  --text-light-muted: #9ca3af;
  --accent-primary: #12b886; /* Icy Mint / Emerald mix */
  --accent-hover: #0ca678;
  --accent-glow: rgba(18, 184, 134, 0.25);
  --accent-secondary: #00b4d8;
  --border-light: #e5e7eb;
  --border-dark: #374151;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 8rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 20px var(--accent-glow);
  --shadow-premium: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Radii */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 9999px;
  --radius-organic: 40% 60% 70% 30% / 40% 50% 60% 50%;
  --radius-asymmetric: 2rem 6rem 2rem 2rem;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ================== GLOBAL STYLES ================== */

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

html {
  scroll-behavior: smooth;
  font-size: 18px;
}

body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ================== TYPOGRAPHY ================== */

.text-gradient {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.headline-xl {
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
}

.headline-lg {
  font-size: clamp(3rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.headline-md {
  font-size: clamp(2.5rem, 4vw, 3rem);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: var(--spacing-md);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ================== COMPONENTS ================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  font-size: 1.1rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: -1;
}

.btn:hover::after {
  transform: translateX(0);
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 30px rgba(18, 184, 134, 0.4);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--bg-dark);
  color: #fff;
}

.btn-dark:hover {
  background: var(--bg-dark-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--text-main);
}

.btn-block {
  width: 100%;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
  background: var(--accent-glow);
  color: var(--accent-hover);
  text-transform: uppercase;
}

/* Image Containers - Unusual Masks */
.img-mask-organic {
  border-radius: var(--radius-organic);
  overflow: hidden;
  transition: border-radius var(--transition-slow);
}

.img-mask-organic:hover {
  border-radius: 40% 50% 60% 40% / 50% 40% 50% 60%;
}

.img-mask-asymmetric {
  border-radius: var(--radius-asymmetric);
  overflow: hidden;
}

.img-mask-arch {
  border-radius: 999px 999px 0 0;
  overflow: hidden;
}

/* Cards */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.glass-dark {
  background: rgba(15, 17, 21, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light);
}

/* Section Backgrounds */
.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.section-dark .subtitle {
  color: var(--text-light-muted);
}

.section-secondary {
  background-color: var(--bg-secondary);
}

.section-padding {
  padding: var(--spacing-xl) 0;
}

/* ================== ANIMATIONS ================== */

/* Reveal Animations */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all var(--transition-slow);
}

.reveal-up.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-fade {
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.reveal-fade.active {
  opacity: 1;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all var(--transition-slow);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all var(--transition-slow);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered Delay */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Continuous Animations */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(18, 184, 134, 0.4); }
  70% { box-shadow: 0 0 0 20px rgba(18, 184, 134, 0); }
  100% { box-shadow: 0 0 0 0 rgba(18, 184, 134, 0); }
}

.animate-pulse {
  animation: pulseGlow 2.5s infinite;
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.shimmer-text {
  background: linear-gradient(90deg, #fff 0%, rgba(255,255,255,0.4) 50%, #fff 100%);
  background-size: 200% auto;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

/* ================== STRUCTURE & LAYOUT ================== */

/* Announcement Bar */
.promo-bar {
  background: var(--bg-dark);
  color: #fff;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
  z-index: 100;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-normal);
  padding: 1rem 0;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent-primary);
  transition: width var(--transition-fast);
}

.nav-links a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-main);
}

/* Hero Section */
.hero {
  position: relative;
  padding: calc(var(--spacing-xl) + 2rem) 0 var(--spacing-xl);
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-bg-glow {
  position: absolute;
  top: 20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(18,184,134,0.15) 0%, rgba(255,255,255,0) 70%);
  border-radius: 50%;
  z-index: -1;
  filter: blur(60px);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 10;
}

.hero-visual {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: center;
}

.hero-product-img {
  width: 100%;
  max-width: 500px;
  filter: drop-shadow(0 30px 40px rgba(0,0,0,0.15));
}

.trust-chips {
  display: flex;
  gap: 1rem;
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.trust-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
}

/* Feature Highlights */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-md);
}

.feature-icon-wrapper {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  color: var(--accent-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  font-size: 1.5rem;
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--accent-primary);
  color: #fff;
  transform: scale(1.1);
}

/* Two Col Block (Image + Text) */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.split-reverse {
  direction: rtl;
}

.split-reverse > * {
  direction: ltr;
}

/* Specs Table */
.specs-container {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.spec-row {
  display: flex;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  font-weight: 600;
  width: 40%;
  color: var(--text-main);
}

.spec-value {
  width: 60%;
  color: var(--text-muted);
}

/* Reviews Slider */
.reviews-grid {
  display: flex;
  overflow-x: auto;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE and Edge */
}
.reviews-grid::-webkit-scrollbar {
  display: none; /* Chrome, Safari and Opera */
}

.review-card {
  min-width: 300px;
  flex: 0 0 auto;
}

.stars {
  color: #f59e0b;
  margin-bottom: 0.5rem;
}

.reviewer {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}

.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--accent-primary);
}

/* FAQ Accordion */
.faq-item {
  border-bottom: 1px solid var(--border-light);
  padding: 1.5rem 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  font-family: var(--font-heading);
}

.faq-icon {
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  color: var(--text-muted);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  margin-top: 1rem;
}

/* Purchase Section */
.purchase-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-premium);
  border: 1px solid var(--accent-glow);
  position: relative;
}

.price-block {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.price-current {
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--text-main);
}

.price-original {
  font-size: 1.5rem;
  color: var(--text-light-muted);
  text-decoration: line-through;
}

.savings-badge {
  background: #def7ec;
  color: #03543f;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: inline-block;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-light-muted);
}

.footer-links a:hover {
  color: #fff;
}

.footer-disclaimer {
  border-top: 1px solid var(--border-dark);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-light-muted);
}

/* ================== MOBILE RESPONSIVENESS ================== */

@media (max-width: 900px) {
  .hero-grid, .split-section {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .split-reverse {
    direction: ltr;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .trust-chips {
    justify-content: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* Hide on mobile initially */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--border-light);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .headline-xl {
    font-size: 2.5rem;
  }
  
  .btn {
    width: 100%; /* Thumb-friendly block buttons on mobile */
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .price-current {
    font-size: 2.5rem;
  }
}