/**
 * Eyes of Azrael - Firebase Themes
 * Modern Glassmorphism UI System with 8 Mythology-Themed Color Schemes
 *
 * Features:
 * - Frosted glass effects with backdrop-filter
 * - 8 mythology-themed color schemes
 * - Responsive grid layouts
 * - Smooth animations and transitions
 * - Modern card-based design
 */

/* ===========================
   CSS CUSTOM PROPERTIES
   =========================== */

:root {
  /* Base Colors for Each Mythology */
  --greek-primary: #9370DB;      /* Medium Purple */
  --egyptian-primary: #DAA520;   /* Goldenrod */
  --norse-primary: #4682B4;      /* Steel Blue */
  --hindu-primary: #FF6347;      /* Tomato (Orange-Red) */
  --buddhist-primary: #FF8C00;   /* Dark Orange (Saffron) */
  --christian-primary: #DC143C;  /* Crimson */
  --islamic-primary: #228B22;    /* Forest Green */
  --celtic-primary: #2E8B57;     /* Sea Green */

  /* Default Theme (Greek) */
  --theme-primary: var(--greek-primary);
  --theme-primary-rgb: 147, 112, 219;

  /* Glassmorphism Properties */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-hover: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.15);
  --glass-blur: 10px;

  /* Dark Mode Glassmorphism */
  --glass-bg-dark: rgba(0, 0, 0, 0.2);
  --glass-bg-dark-hover: rgba(0, 0, 0, 0.3);
  --glass-border-dark: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-heading: 'Georgia', 'Times New Roman', serif;

  /* 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: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

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

  /* Z-Index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* ===========================
   THEME VARIATIONS
   =========================== */

/* Greek Theme */
[data-theme="greek"] {
  --theme-primary: var(--greek-primary);
  --theme-primary-rgb: 147, 112, 219;
  --theme-gradient: linear-gradient(135deg, #9370DB 0%, #7B68EE 100%);
}

/* Egyptian Theme */
[data-theme="egyptian"] {
  --theme-primary: var(--egyptian-primary);
  --theme-primary-rgb: 218, 165, 32;
  --theme-gradient: linear-gradient(135deg, #DAA520 0%, #B8860B 100%);
}

/* Norse Theme */
[data-theme="norse"] {
  --theme-primary: var(--norse-primary);
  --theme-primary-rgb: 70, 130, 180;
  --theme-gradient: linear-gradient(135deg, #4682B4 0%, #5F9EA0 100%);
}

/* Hindu Theme */
[data-theme="hindu"] {
  --theme-primary: var(--hindu-primary);
  --theme-primary-rgb: 255, 99, 71;
  --theme-gradient: linear-gradient(135deg, #FF6347 0%, #FF4500 100%);
}

/* Buddhist Theme */
[data-theme="buddhist"] {
  --theme-primary: var(--buddhist-primary);
  --theme-primary-rgb: 255, 140, 0;
  --theme-gradient: linear-gradient(135deg, #FF8C00 0%, #FFA500 100%);
}

/* Christian Theme */
[data-theme="christian"] {
  --theme-primary: var(--christian-primary);
  --theme-primary-rgb: 220, 20, 60;
  --theme-gradient: linear-gradient(135deg, #DC143C 0%, #B22222 100%);
}

/* Islamic Theme */
[data-theme="islamic"] {
  --theme-primary: var(--islamic-primary);
  --theme-primary-rgb: 34, 139, 34;
  --theme-gradient: linear-gradient(135deg, #228B22 0%, #006400 100%);
}

/* Celtic Theme */
[data-theme="celtic"] {
  --theme-primary: var(--celtic-primary);
  --theme-primary-rgb: 46, 139, 87;
  --theme-gradient: linear-gradient(135deg, #2E8B57 0%, #3CB371 100%);
}

/* ===========================
   BASE STYLES
   =========================== */

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Dark background patterns */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(var(--theme-primary-rgb), 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(var(--theme-primary-rgb), 0.1) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

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

/* Glass Container */
.glass-container {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-xl);
  transition: var(--transition-normal);
}

.glass-container:hover {
  background: var(--glass-bg-hover);
  box-shadow: var(--glass-shadow-hover);
  transform: translateY(-2px);
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-lg);
  transition: var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--theme-gradient);
  transform: scaleX(0);
  transition: var(--transition-normal);
  transform-origin: left;
}

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

.glass-card:hover {
  background: var(--glass-bg-hover);
  box-shadow: var(--glass-shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(var(--theme-primary-rgb), 0.3);
}

/* Glass Button */
.glass-btn {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: white;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--glass-shadow);
  text-decoration: none;
  display: inline-block;
}

.glass-btn:hover {
  background: rgba(var(--theme-primary-rgb), 0.3);
  border-color: rgba(var(--theme-primary-rgb), 0.5);
  box-shadow: var(--glass-shadow-hover);
  transform: translateY(-2px);
}

.glass-btn:active {
  transform: translateY(0);
}

.glass-btn-primary {
  background: rgba(var(--theme-primary-rgb), 0.3);
  border-color: rgba(var(--theme-primary-rgb), 0.5);
}

.glass-btn-primary:hover {
  background: rgba(var(--theme-primary-rgb), 0.5);
  border-color: rgba(var(--theme-primary-rgb), 0.7);
}

/* Glass Input */
.glass-input {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: white;
  font-size: 1rem;
  transition: var(--transition-normal);
  width: 100%;
}

.glass-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.glass-input:focus {
  outline: none;
  border-color: rgba(var(--theme-primary-rgb), 0.5);
  background: var(--glass-bg-hover);
  box-shadow: 0 0 0 3px rgba(var(--theme-primary-rgb), 0.1);
}

/* Glass Select */
.glass-select {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: white;
  font-size: 1rem;
  transition: var(--transition-normal);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='white' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  padding-right: var(--spacing-xl);
}

.glass-select:focus {
  outline: none;
  border-color: rgba(var(--theme-primary-rgb), 0.5);
  background-color: var(--glass-bg-hover);
}

.glass-select option {
  background: #333;
  color: white;
}

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

/* Page Container */
.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

/* Header */
.page-header {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: white;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-md);
}

/* Theme Selector */
.theme-selector {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--glass-border);
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  box-shadow: var(--glass-shadow);
}

.theme-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--glass-shadow-hover);
}

.theme-btn.active {
  border-color: white;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.theme-btn[data-theme="greek"] { background: var(--greek-primary); }
.theme-btn[data-theme="egyptian"] { background: var(--egyptian-primary); }
.theme-btn[data-theme="norse"] { background: var(--norse-primary); }
.theme-btn[data-theme="hindu"] { background: var(--hindu-primary); }
.theme-btn[data-theme="buddhist"] { background: var(--buddhist-primary); }
.theme-btn[data-theme="christian"] { background: var(--christian-primary); }
.theme-btn[data-theme="islamic"] { background: var(--islamic-primary); }
.theme-btn[data-theme="celtic"] { background: var(--celtic-primary); }

/* Grid Layout */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

/* Card Components */
.content-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  cursor: pointer;
}

.content-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--theme-gradient);
  opacity: 0;
  transition: var(--transition-normal);
  z-index: -1;
}

.content-card:hover::after {
  opacity: 0.1;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(var(--theme-primary-rgb), 0.3);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: white;
  margin: 0;
}

.card-badge {
  background: rgba(var(--theme-primary-rgb), 0.3);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid rgba(var(--theme-primary-rgb), 0.5);
}

.card-body {
  flex: 1;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.card-tag {
  background: var(--glass-bg);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  border: 1px solid var(--glass-border);
}

/* Add Content Card (+) */
.add-content-card {
  background: rgba(var(--theme-primary-rgb), 0.1);
  border: 2px dashed rgba(var(--theme-primary-rgb), 0.4);
  cursor: pointer;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.add-content-card:hover {
  background: rgba(var(--theme-primary-rgb), 0.2);
  border-color: rgba(var(--theme-primary-rgb), 0.6);
  border-style: solid;
}

.add-card-content {
  text-align: center;
  padding: var(--spacing-xl);
}

.add-card-icon {
  color: rgba(var(--theme-primary-rgb), 0.8);
  margin-bottom: var(--spacing-md);
  animation: pulse 2s ease-in-out infinite;
}

.add-card-icon svg {
  filter: drop-shadow(0 0 10px rgba(var(--theme-primary-rgb), 0.5));
}

.add-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.add-card-description {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

/* ===========================
   LOADING STATES
   =========================== */

.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
  flex-direction: column;
  gap: var(--spacing-md);
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--theme-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  color: white;
  font-size: 1.1rem;
  text-align: center;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-title {
  height: 2rem;
  width: 70%;
  margin-bottom: var(--spacing-md);
}

.skeleton-text {
  height: 1rem;
  width: 100%;
  margin-bottom: var(--spacing-sm);
}

.skeleton-text:last-child {
  width: 80%;
}

/* ===========================
   ERROR STATES
   =========================== */

.error-container {
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.error-title {
  color: #FF6B6B;
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.error-message {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

/* ===========================
   EMPTY STATES
   =========================== */

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: rgba(255, 255, 255, 0.8);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.5rem;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.empty-state-message {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ===========================
   FILTERS & CONTROLS
   =========================== */

.controls-bar {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}

.filter-group {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex: 1;
  min-width: 200px;
}

.filter-label {
  color: white;
  font-weight: 500;
  white-space: nowrap;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 1024px) {
  .page-container {
    padding: var(--spacing-lg);
  }

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

@media (max-width: 768px) {
  .page-container {
    padding: var(--spacing-md);
  }

  .page-title {
    font-size: 1.75rem;
  }

  .controls-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-group {
    width: 100%;
  }

  .theme-selector {
    justify-content: center;
  }
}

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

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

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-up {
  animation: slideUp 0.4s ease forwards;
}

/* Stagger animation for cards */
.content-card {
  animation: slideUp 0.5s ease forwards;
  opacity: 0;
}

.content-card:nth-child(1) { animation-delay: 0.1s; }
.content-card:nth-child(2) { animation-delay: 0.2s; }
.content-card:nth-child(3) { animation-delay: 0.3s; }
.content-card:nth-child(4) { animation-delay: 0.4s; }
.content-card:nth-child(5) { animation-delay: 0.5s; }
.content-card:nth-child(6) { animation-delay: 0.6s; }

/* ===========================
   UTILITY CLASSES
   =========================== */

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

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

/* ===========================
   ACCESSIBILITY
   =========================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--theme-primary);
  outline-offset: 2px;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}