/* ========================================
   Sèmi.recipes - Windows 11 Style CSS
   Glassmorphism & Modern Design
   ======================================== */

/* CSS Variables - Theme System */
:root {
  /* Light Mode (Default) */
  --bg-primary: #f3f3f3;
  --bg-secondary: #ffffff;
  --bg-surface: rgba(255, 255, 255, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.65);
  --text-primary: #1a1a1a;
  --text-secondary: #5f5f5f;
  --text-muted: #8a8a8a;
  --accent: #0078d4;
  --accent-hover: #106ebe;
  --accent-light: rgba(0, 120, 212, 0.1);
  --border: rgba(0, 0, 0, 0.06);
  --border-light: rgba(255, 255, 255, 0.5);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Typography */
  --font-family: 'Segoe UI Variable', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #202020;
  --bg-secondary: #2d2d2d;
  --bg-surface: rgba(45, 45, 45, 0.7);
  --bg-glass: rgba(32, 32, 32, 0.7);
  --text-primary: #ffffff;
  --text-secondary: #c4c4c4;
  --text-muted: #808080;
  --accent: #60cdff;
  --accent-hover: #80d8ff;
  --accent-light: rgba(96, 205, 255, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.1);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Rose Mode */
[data-theme="rose"] {
  --bg-primary: #fff0f5;
  --bg-secondary: #fff5f8;
  --bg-surface: rgba(255, 240, 245, 0.75);
  --bg-glass: rgba(255, 240, 245, 0.7);
  --text-primary: #831843;
  --text-secondary: #9d174d;
  --text-muted: #be185d;
  --accent: #db2777;
  --accent-hover: #be185d;
  --accent-light: rgba(219, 39, 119, 0.1);
  --border: rgba(131, 24, 67, 0.08);
  --border-light: rgba(219, 39, 119, 0.2);
  --shadow: 0 8px 32px rgba(131, 24, 67, 0.15);
  --shadow-sm: 0 2px 8px rgba(131, 24, 67, 0.1);
}

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

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-normal), color var(--transition-normal);
}

/* Glass Effect Utility */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-light);
}

.glass-sm {
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-normal);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-lg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  background: var(--bg-surface);
  border-radius: var(--radius-full);
  padding: 4px;
  gap: 4px;
}

.theme-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  color: var(--text-primary);
}

.theme-btn.active {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-sm);
}

/* Main Content */
.main-content {
  flex: 1;
  padding-top: 80px;
  padding-bottom: 100px;
}

/* Bottom Navigation (Mobile Dock) */
.bottom-nav {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-sm) var(--spacing-md);
  gap: var(--spacing-xs);
  box-shadow: var(--shadow);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: transparent;
}

.nav-item:hover, .nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
}

.nav-icon {
  font-size: var(--font-size-lg);
  margin-bottom: 2px;
}

/* Feed Container - TikTok Style */
.feed-container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.post-card {
  position: relative;
  width: 100%;
  height: calc(100vh - 180px);
  max-height: 750px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-lg);
  scroll-snap-align: start;
}

.post-media {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}

/* Post Overlay */
.post-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
}

.post-vendor-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.vendor-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--accent);
  object-fit: cover;
}

.vendor-name {
  font-weight: 600;
  font-size: var(--font-size-md);
}

.verified-badge {
  color: #60cdff;
  font-size: var(--font-size-sm);
}

.post-description {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-price {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: var(--accent);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

/* Post Actions */
.post-actions {
  position: absolute;
  right: var(--spacing-md);
  bottom: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: none;
  border-radius: var(--radius-full);
  width: 48px;
  height: 48px;
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

.action-btn.liked {
  color: #ff4757;
}

.action-btn .icon {
  font-size: var(--font-size-lg);
}

.action-btn .count {
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  transform: translateY(20px) scale(0.95);
  transition: all var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-surface);
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--spacing-sm);
}

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

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

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

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  color: var(--text-primary);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--accent-light);
  border-color: var(--accent);
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Recipe Detail Page */
.recipe-detail {
  padding: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
}

.recipe-media {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.recipe-section {
  margin-bottom: var(--spacing-lg);
}

.recipe-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--accent);
}

.recipe-section p, .recipe-section ul {
  color: var(--text-secondary);
  line-height: 1.7;
}

.recipe-section ul {
  padding-left: var(--spacing-lg);
}

.recipe-section li {
  margin-bottom: var(--spacing-xs);
}

/* Chat Interface */
.chat-container {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 180px);
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.message {
  max-width: 75%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
}

.message.sent {
  align-self: flex-end;
  background: var(--accent);
  color: white;
  border-bottom-right-radius: var(--radius-sm);
}

.message.received {
  align-self: flex-start;
  background: var(--bg-surface);
  color: var(--text-primary);
  border-bottom-left-radius: var(--radius-sm);
}

.chat-input-area {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
}

.chat-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
}

/* Chat Paywall */
.chat-paywall {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
}

.chat-paywall-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.chat-paywall h3 {
  margin-bottom: var(--spacing-sm);
}

.chat-paywall p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* Profile Page */
.profile-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

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

.profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  border: 3px solid var(--accent);
  margin-bottom: var(--spacing-md);
  object-fit: cover;
}

.profile-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.profile-bio {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.profile-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--spacing-lg);
}

.tab {
  flex: 1;
  padding: var(--spacing-md);
  text-align: center;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Grid for Posts */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xs);
}

.grid-post {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.grid-post img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.grid-post:hover img {
  transform: scale(1.1);
}

.grid-post-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xs);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
  color: white;
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Notification Badge */
.badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ff4757;
  color: white;
  font-size: 10px;
  font-weight: 600;
  min-width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow);
  z-index: 2000;
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-left: 4px solid #22c55e;
}

.toast.error {
  border-left: 4px solid #ef4444;
}

.toast.info {
  border-left: 4px solid var(--accent);
}

/* Payment Modal Specific */
.payment-modal-content {
  text-align: center;
  padding: var(--spacing-lg);
}

.payment-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
}

.payment-amount {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: var(--spacing-sm);
}

.payment-phone-input {
  font-size: var(--font-size-lg);
  text-align: center;
  letter-spacing: 2px;
}

.payment-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
}

/* Comments Section */
.comments-section {
  padding: var(--spacing-md);
}

.comment {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.comment-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.comment-content {
  flex: 1;
}

.comment-author {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.comment-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.comment-time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
}

/* Responsive */
@media (min-width: 768px) {
  .bottom-nav {
    bottom: var(--spacing-xl);
  }
  
  .feed-container {
    padding: var(--spacing-xl);
  }
  
  .post-card {
    max-height: 800px;
  }
}

@media (min-width: 1024px) {
  .header-content {
    padding: 0 var(--spacing-xl);
  }
  
  .bottom-nav {
    left: var(--spacing-xl);
    transform: none;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { 
    opacity: 0;
    transform: translateY(20px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fade-in {
  animation: fadeIn var(--transition-normal) ease;
}

.animate-slide-up {
  animation: slideUp var(--transition-normal) ease;
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}