/* ===================================
   Supplement Store.lk - Premium Design System
   =================================== */

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

/* ===================================
   CSS Variables - Design Tokens
   =================================== */
:root {
  /* Colors - Premium Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --dark-gradient: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);

  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --secondary-color: #764ba2;
  --accent-color: #f5576c;
  --success-color: #00f2fe;

  --bg-dark: #0f0c29;
  --bg-darker: #0a0817;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);

  --text-primary: #ffffff;
  --text-secondary: #b8b8d4;
  --text-muted: #8888a8;

  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);

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

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  background-image: var(--dark-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.75rem;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

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

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

/* ===================================
   Layout & Container
   =================================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===================================
   Navigation
   =================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 12, 41, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-md);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
}

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

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width var(--transition-normal);
}

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

.cart-icon {
  position: relative;
  font-size: 1.5rem;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.cart-icon:hover {
  transform: scale(1.1);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--accent-color);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  position: relative;
  overflow: hidden;
}

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

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: white;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(245, 87, 108, 0.4);
}

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

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

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
}

/* ===================================
   Cards
   =================================== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

/* ===================================
   Product Cards
   =================================== */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.product-image {
  width: 100%;
  height: 120px !important;
  object-fit: cover !important;
  background: var(--bg-darker);
  position: relative;
}

.product-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--accent-color);
  color: white;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 10;
}

.product-content {
  padding: var(--spacing-md);
}

.product-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.product-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-pricing {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.price-original {
  font-size: 1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.price-discounted {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-container {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.navbar-logo {
  height: 45px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.navbar-logo:hover {
  transform: scale(1.05);
}

.savings {
  font-size: 0.875rem;
  color: var(--success-color);
  font-weight: 600;
}

/* ===================================
   Forms
   =================================== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  color: var(--accent-color);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  position: relative;
  padding: var(--spacing-xxl) 0;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-title {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@keyframes pulse {

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

  50% {
    transform: scale(1.05);
  }
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: var(--spacing-xs);
}

.gap-2 {
  gap: var(--spacing-sm);
}

.gap-3 {
  gap: var(--spacing-md);
}

.gap-4 {
  gap: var(--spacing-lg);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .nav-links {
    gap: var(--spacing-sm);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

/* ===================================
   Loading States
   =================================== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===================================
   Footer
   =================================== */
.footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

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

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* ===================================
   Notification Bell & Inbox
   =================================== */
.nav-item-notification {
  position: relative;
  display: flex !important;
  align-items: center;
  justify-content: center;
}

.notification-bell-btn {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 5px;
  color: var(--text-secondary);
  transition: transform var(--transition-fast);
  position: relative;
}

.notification-bell-btn:hover {
  transform: scale(1.1);
  color: var(--text-primary);
}

.unread-badge {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--accent-color);
  color: white;
  font-size: 10px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 9px;
  display: none;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  border: 2px solid var(--bg-dark);
}

/* Inbox Dropdown */
.inbox-dropdown {
  position: absolute;
  top: 45px;
  right: 0;
  width: 300px;
  background: rgba(15, 12, 41, 0.98);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 1100;
  max-height: 400px;
  overflow-y: auto;
}

.inbox-dropdown.show {
  display: block;
  animation: fadeInDown 0.3s ease;
}

.inbox-header {
  padding: 12px 15px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
}

.inbox-header strong {
  font-size: 0.9rem;
  color: var(--text-primary);
}

.inbox-item {
  padding: 12px 15px;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.2s;
  cursor: pointer;
}

.inbox-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.inbox-item.unread {
  background: rgba(102, 126, 234, 0.1);
  border-left: 3px solid var(--primary-color);
}

.inbox-item-text {
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.inbox-item-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

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