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

:root {
  /* Colors */
  --primary: #f1c40f;
  --primary-dark: #d4ac0d;
  --primary-light: #f7dc6f;
  
  --background: #0a0f15;
  --background-secondary: #0d141c;
  --background-tertiary: #111827;
  --background-card: #1f2937;
  --background-hover: #374151;
  
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  
  --border: #374151;
  --border-light: #4b5563;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, var(--background) 0%, var(--background-secondary) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 15, 21, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-md) 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.nav-brand {
  flex-shrink: 0;
}

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

.logo-circle {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--background);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
}

.brand-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  justify-content: center;
}

.nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--background-hover);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(241, 196, 15, 0.1);
}

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

.search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 280px;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(241, 196, 15, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  color: var(--text-muted);
  z-index: 1;
}

.language-selector {
  display: flex;
  align-items: center;
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  gap: var(--spacing-sm);
}

.globe-icon {
  color: var(--text-muted);
}

.language-select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  outline: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  gap: 3px;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* Main Container */
.main-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - 90px);
  gap: 0;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  border-right: none;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 90px;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  background: var(--background-tertiary);
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
}

.book-list {
  list-style: none;
}

.book-item {
  border-bottom: 1px solid var(--border);
}

.book-item:last-child {
  border-bottom: none;
}

.book-button {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-primary);
}

.book-button:hover {
  background: var(--background-hover);
}

.book-button.active {
  background: rgba(241, 196, 15, 0.1);
  color: var(--primary);
}

.book-icon {
  flex-shrink: 0;
  opacity: 0.8;
}

.book-info {
  flex: 1;
  text-align: left;
}

.book-title {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.book-chapters {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--background-tertiary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.book-arrow {
  flex-shrink: 0;
  opacity: 0.5;
  transition: var(--transition);
}

.book-button:hover .book-arrow {
  opacity: 1;
  transform: translateX(2px);
}

/* Content Area */
.content-area {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  padding: var(--spacing-lg);
  gap: var(--spacing-lg);
  background: var(--background);
}

.content-header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding-bottom: var(--spacing-md);
}

.chapter-navigation {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
  max-width: 100%;
  overflow-x: auto;
  padding: var(--spacing-sm);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.chapter-navigation::-webkit-scrollbar {
  height: 6px;
}

.chapter-navigation::-webkit-scrollbar-track {
  background: transparent;
}

.chapter-navigation::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.chapter-btn {
  min-width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--background-card);
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.chapter-btn:hover {
  background: var(--background-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.chapter-btn.active {
  background: var(--primary);
  color: var(--background);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.chapter-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.chapter-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
}

.verses-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  flex: 1;
  overflow-y: auto;
  padding-right: var(--spacing-sm);
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
}

.verses-container::-webkit-scrollbar {
  width: 8px;
}

.verses-container::-webkit-scrollbar-track {
  background: transparent;
}

.verses-container::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}

.verses-container::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.verse-item {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: var(--spacing-lg);
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-xs);
}

.verse-item:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.verse-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.verse-text {
  line-height: 1.8;
  color: var(--text-secondary);
  font-size: 1rem;
  padding: var(--spacing-xs) 0;
}

/* Loading */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 15, 21, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  text-align: center;
  color: var(--text-primary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 260px 1fr;
    gap: var(--spacing-md);
  }
  
  .search-input {
    width: 200px;
  }
  
  .content-area {
    padding: var(--spacing-md);
  }
  
  .chapter-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-links {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .search-input {
    width: 160px;
  }
  
  .main-container {
    grid-template-columns: 1fr;
    height: calc(100vh - 70px);
  }
  
  .sidebar {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 280px;
    height: calc(100vh - 70px);
    z-index: 1000;
    transition: left 0.3s ease;
    border-radius: 0;
    border: none;
    border-right: 1px solid var(--border);
  }
  
  .sidebar.mobile-open {
    left: 0;
  }
  
  .sidebar-content {
    max-height: none;
  }
  
  .content-area {
    padding: var(--spacing-sm);
    height: 100%;
  }
  
  .chapter-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
  }
  
  .verse-item {
    grid-template-columns: 40px 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }
  
  .verse-number {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
  }
  
  .verse-text {
    font-size: 0.95rem;
    line-height: 1.7;
  }
}

@media (max-width: 480px) {
  .nav-container {
    gap: var(--spacing-md);
  }
  
  .brand-text {
    display: none;
  }
  
  .search-input {
    width: 120px;
  }
  
  .chapter-navigation {
    gap: 6px;
    max-width: 100%;
  }
  
  .chapter-btn {
    min-width: 32px;
    height: 32px;
    font-size: 0.75rem;
  }
  
  .chapter-title {
    font-size: 1.5rem;
  }
  
  .verse-item {
    grid-template-columns: 36px 1fr;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .verse-number {
    width: 28px;
    height: 28px;
    font-size: 0.7rem;
  }
  
  .verse-text {
    font-size: 0.9rem;
    line-height: 1.6;
  }
}

/* Mobile overlay for sidebar */
@media (max-width: 768px) {
  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Focus States */
.book-button:focus,
.chapter-btn:focus,
.nav-link:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border: #6b7280;
    --border-light: #9ca3af;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}