/* ===================================
   Orvix Coffee - Premium Parallax Website
   Dark Mode Design System
   =================================== */

/* ========== CSS VARIABLES ========== */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;

  /* Brand Colors */
  --brand-cream: #d4c5a9;
  --brand-coffee: #6b4423;

  /* Variant Colors */
  --variant-espresso: #6b4423;
  --variant-latte: #a0826d;
  --variant-coldbrew: #4a3428;

  /* Accents */
  --accent-bright: #f5f5f5;
  --accent-dark: #1a1a1a;

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

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ========== RESET & BASE ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition-normal);
}

/* ========== LOADING SCREEN ========== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  width: 200px;
  height: 200px;
  margin-bottom: var(--spacing-lg);
  object-fit: contain;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.7;
    transform: scale(0.95);
  }
}

.loading-bar-container {
  width: 400px;
  max-width: 80vw;
  height: 4px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.loading-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-cream), var(--brand-coffee));
  width: 0%;
  transition: width 0.3s ease;
  border-radius: var(--radius-full);
}

.loading-percentage {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--brand-cream);
  letter-spacing: 0.05em;
}

/* ========== NAVIGATION BAR ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 1000;
  transition: var(--transition-normal);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-cream);
  letter-spacing: 0.05em;
}

.navbar-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  list-style: none;
}

.navbar-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--brand-cream);
  transition: width var(--transition-normal);
}

.navbar-links a:hover {
  color: var(--text-primary);
}

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

.theme-toggle {
  width: 24px;
  height: 24px;
  cursor: pointer;
  opacity: 0.7;
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  opacity: 1;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-fast);
}

/* ========== HERO SECTION ========== */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-primary);
}

.parallax-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(10, 10, 10, 0.3), rgba(10, 10, 10, 0.6));
  pointer-events: none;
}

.hero-content {
  position: relative;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-md);
  max-width: 1600px;
  margin: 0 auto;
  z-index: 10;
}

/* Left Side - Text Block */
.hero-text-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 500px;
}

.hero-logo-small {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: var(--spacing-sm);
}

.drink-name {
  font-size: 5rem;
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: var(--transition-slow);
}

.drink-subtitle {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: var(--transition-slow);
}

.drink-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 400px;
  transition: var(--transition-slow);
}

.hero-cta-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.cta-btn {
  padding: 1rem 2.5rem;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.cta-btn-transparent:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.cta-btn-bright {
  background: var(--brand-cream);
  color: var(--bg-primary);
  border: 2px solid var(--brand-cream);
}

.cta-btn-bright:hover {
  background: transparent;
  color: var(--brand-cream);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 197, 169, 0.3);
}

/* Right Side - Variant Navigation */
.variant-navigation {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

.variant-index {
  font-size: 8rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.1);
  line-height: 1;
  letter-spacing: -0.05em;
  user-select: none;
}

.variant-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.variant-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition-normal);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.variant-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  transform: translateX(-4px);
}

.variant-btn svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

/* ========== CONTENT SECTIONS ========== */
.content-section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--text-primary), var(--brand-cream));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Product Section */
.product-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.product-image {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

.product-image:hover img {
  transform: scale(1.05);
}

.product-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.product-text h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.product-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Ingredients Section */
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.ingredient-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.ingredient-card:hover {
  background: var(--bg-tertiary);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.ingredient-card h4 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--brand-cream);
}

.ingredient-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Nutrition Section */
.nutrition-label {
  max-width: 400px;
  margin: var(--spacing-lg) auto;
  background: var(--text-primary);
  color: var(--bg-primary);
  border: 2px solid var(--bg-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  font-family: 'Helvetica', Arial, sans-serif;
}

.nutrition-label h3 {
  font-size: 2.5rem;
  font-weight: 900;
  text-transform: uppercase;
  border-bottom: 10px solid var(--bg-primary);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.nutrition-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--bg-primary);
  font-size: 0.95rem;
}

.nutrition-row span:first-child {
  font-weight: 600;
}

.nutrition-row.bold {
  font-weight: 700;
  font-size: 1.1rem;
}

/* Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.review-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.review-stars {
  color: #fbbf24;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
}

.review-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
}

.review-author {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: auto;
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: var(--spacing-lg) auto;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-tertiary);
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform var(--transition-normal);
}

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

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

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* ========== FOOTER ========== */
.footer {
  background-color: var(--bg-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg) var(--spacing-md);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
}

.footer-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all var(--transition-normal);
}

.social-icon:hover {
  background: var(--brand-cream);
  color: var(--bg-primary);
  transform: translateY(-4px);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-cream);
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
  padding-left: var(--spacing-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }

  .variant-navigation {
    margin-top: var(--spacing-lg);
    justify-content: center;
  }

  .variant-index {
    font-size: 6rem;
  }

  .product-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(16px);
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .navbar-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .drink-name {
    font-size: 3.5rem;
  }

  .drink-subtitle {
    font-size: 1.2rem;
  }

  .hero-cta-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }

  .cta-btn {
    width: 100%;
  }

  .variant-index {
    font-size: 4rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .ingredients-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: var(--spacing-sm);
  }

  .navbar-logo img {
    width: 40px;
    height: 40px;
  }

  .navbar-brand {
    font-size: 1.2rem;
  }

  .drink-name {
    font-size: 2.5rem;
  }

  .content-section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

/* ========== SMOOTH ANIMATIONS ========== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* ========== UTILITIES ========== */
.text-gradient {
  background: linear-gradient(135deg, var(--text-primary), var(--brand-cream));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glassmorphism {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}