/* =============================================================================
   ChoristerCorner - General Styles
   A comprehensive platform for choristers and worship leaders
   ============================================================================= */

/* === ROOT VARIABLES === */
:root {
  /* Color Palette */
  --color-primary: #7c3aed;           /* purple-600 */
  --color-primary-light: #a855f7;    /* purple-500 */
  --color-primary-dark: #5b21b6;     /* purple-700 */
  --color-primary-50: #faf5ff;       /* purple-50 */
  --color-primary-100: #f3e8ff;      /* purple-100 */
  
  --color-secondary: #3b82f6;        /* blue-500 */
  --color-secondary-50: #eff6ff;     /* blue-50 */
  --color-secondary-100: #dbeafe;    /* blue-100 */
  
  --color-accent: #10b981;           /* green-500 */
  --color-accent-50: #ecfdf5;        /* green-50 */
  --color-accent-100: #d1fae5;       /* green-100 */
  
  --color-warning: #f59e0b;          /* yellow-500 */
  --color-warning-50: #fffbeb;       /* yellow-50 */
  --color-warning-100: #fef3c7;      /* yellow-100 */
  
  --color-danger: #ef4444;           /* red-500 */
  --color-danger-50: #fef2f2;        /* red-50 */
  --color-danger-100: #fee2e2;       /* red-100 */
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  
  /* Border Radius */
  --radius-sm: 0.125rem;   /* 2px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  
  /* 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-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-feature-settings: normal;
  font-variation-settings: normal;
}

body {
  font-family: var(--font-sans);
  line-height: 1.5;
  color: var(--color-gray-900);
  background: linear-gradient(135deg, var(--color-secondary-50) 0%, var(--color-primary-50) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-gray-900);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-700);
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* === NAVIGATION STYLES === */
.nav-tab {
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  outline: none;
  position: relative;
}

.nav-tab:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-tab.active {
  background-color: var(--color-primary-100);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.nav-tab:not(.active):hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.mobile-nav-tab {
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  outline: none;
}

.mobile-nav-tab:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.mobile-nav-tab.active {
  background-color: var(--color-primary-100);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.mobile-nav-tab:not(.active):hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

/* === BUTTON STYLES === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  font-family: inherit;
  outline: none;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: #2563eb; /* blue-600 */
  border-color: #2563eb;
}

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

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-700);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
}

/* === CARD STYLES === */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

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

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

/* === FORM STYLES === */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(124 58 237 / 0.1);
}

.form-input:invalid,
.form-textarea:invalid,
.form-select:invalid {
  border-color: var(--color-danger);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-help {
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.form-error {
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--color-danger);
}

/* === QUICK ACTION STYLES === */
.quick-action-btn {
  background-color: transparent;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  outline: none;
  width: 100%;
}

.quick-action-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.quick-action-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* === UTILITY CLASSES === */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

/* === RESPONSIVE UTILITIES === */
@media (max-width: 640px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .card-header,
  .card-body,
  .card-footer {
    padding: var(--spacing-md);
  }
}

/* === ANIMATION CLASSES === */
.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

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

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

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* === LOADING STATES === */
.loading {
  position: relative;
  color: transparent;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #5b21b6;
    --color-gray-300: #6b7280;
    --color-gray-600: #374151;
  }
}

/* === VIDEO PLAYER STYLES === */
/* Add bottom padding when video player is visible */
body.video-player-active {
  padding-bottom: 480px; /* Increased space for taller expanded player */
}

body.video-player-active.player-collapsed {
  padding-bottom: 80px; /* Space for collapsed player header */
}

/* === AUDIO PLAYER STYLES === */
/* Add bottom padding when audio player is visible */
body.audio-player-active {
  padding-bottom: 480px; /* Same space as video player */
}

body.audio-player-active.player-collapsed {
  padding-bottom: 80px; /* Space for collapsed player header */
}

/* Mobile-specific player height adjustments */
@media (max-width: 768px) {
  body.video-player-active {
    padding-bottom: 520px; /* Even more space for mobile */
  }
  
  body.audio-player-active {
    padding-bottom: 520px; /* Same for audio player */
  }
}

#video-player-section {
  transition: all 0.3s ease-in-out;
  max-height: 65vh; /* Increased from 50vh for taller desktop view */
}

/* Increase player height on mobile for better lyrics viewing */
@media (max-width: 768px) {
  #video-player-section {
    max-height: 70vh; /* Even taller on mobile */
  }
  
  .video-player-content {
    height: calc(70vh - 80px) !important; /* Mobile-specific height */
  }
}

/* Desktop-specific video player styling */
@media (min-width: 769px) {
  .video-player-content {
    height: calc(65vh - 80px) !important; /* Desktop height calculation */
  }
}

/* Lyrics content styling in player */
.lyrics-container .lyrics-verse {
  margin-bottom: 1rem;
}

.lyrics-container .lyrics-verse:last-child {
  margin-bottom: 0;
}

/* Mobile responsive player content height */
.video-player-content {
  height: 300px;
}

/* Desktop layout - equal width for video and lyrics */
@media (min-width: 769px) {
  .video-player-content .grid {
    grid-template-columns: 1fr 1fr; /* Equal width columns on desktop */
  }
}

@media (max-width: 768px) {
  .video-player-content {
    height: 440px; /* Even taller content area on mobile */
  }
  
  /* Stack video and lyrics vertically on mobile for better lyrics viewing */
  .video-player-content .grid {
    grid-template-rows: 200px 1fr; /* Video takes 200px, lyrics get remaining space (240px) */
  }
}

/* === PRINT STYLES === */
@media print {
  .nav-tab,
  .mobile-nav-tab,
  .quick-action-btn,
  footer {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .card {
    box-shadow: none !important;
    border: 1px solid #000 !important;
  }
}

/* === COPY NOTIFICATION STYLES === */
#copy-notification {
  transform: translateX(100%);
  backdrop-filter: blur(8px);
  animation: slideInFromRight 0.3s ease-out forwards;
}

@keyframes slideInFromRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Copy link button hover effects */
.btn:hover .bi-link-45deg {
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.btn .bi-link-45deg {
  transition: transform 0.2s ease;
}

/* === COMMON GRID LAYOUTS === */
/* Standard responsive grids used across tabs */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* === LYRICS STYLES === */
.lyrics-container {
  line-height: 1.8;
}

.lyrics-verse {
  margin-bottom: var(--spacing-lg);
}

.lyrics-verse:not(:last-child) {
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-gray-300);
}

.verse-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-50);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.verse-content {
  color: var(--color-gray-800);
  padding-left: var(--spacing-md);
}

.verse-content p {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}