/* Modern Design System - Figma Inspired */
:root {
  /* Colors */
  --primary-50: #f0f4ff;
  --primary-100: #e0e7ff;
  --primary-200: #c7d2fe;
  --primary-300: #a5b4fc;
  --primary-400: #818cf8;
  --primary-500: #6366f1;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --primary-800: #3730a3;
  --primary-900: #312e81;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --success-50: #f0fdf4;
  --success-500: #22c55e;
  --success-600: #16a34a;

  --warning-50: #fffbeb;
  --warning-500: #f59e0b;

  --error-50: #fef2f2;
  --error-500: #ef4444;
  --error-600: #dc2626;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
  --gradient-card: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gradient-secondary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 480px;
  margin: 0 auto;
  background: var(--gradient-secondary);
  position: relative;
  overflow-x: hidden;
}

/* Header */
.app-header {
  background: var(--gradient-primary);
  color: white;
  padding: var(--space-6) var(--space-4) var(--space-8);
  position: relative;
  overflow: hidden;
}

.app-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.header-content {
  position: relative;
  z-index: 1;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.logo-icon {
  font-size: var(--font-size-2xl);
  animation: float 3s ease-in-out infinite;
}

.logo h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  font-weight: 400;
  line-height: 1.5;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Cards */
.card {
  background: var(--gradient-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.card-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-icon {
  font-size: var(--font-size-xl);
  opacity: 0.7;
}

.card-description {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
  line-height: 1.5;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.label-text {
  font-weight: 600;
  color: var(--gray-700);
  font-size: var(--font-size-sm);
}

.label-hint {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  font-weight: 400;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-family: inherit;
  background: white;
  color: var(--gray-800);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
  transform: translateY(-1px);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.select-wrapper {
  position: relative;
}

.select-arrow {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--gray-400);
  font-size: var(--font-size-xs);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-normal);
}

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

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

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 2px solid var(--gray-200);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-300);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

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

/* Card Actions */
.card-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.card-actions .btn {
  flex: 1;
  min-width: 120px;
  justify-content: center;
}

/* Message Card */
.message-card {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.message-container {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.message-content {
  flex: 1;
  min-height: 120px;
  padding: var(--space-5);
  background: white;
  border-radius: var(--radius-xl);
  border: 2px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.message-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--gray-500);
}

.placeholder-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
  opacity: 0.7;
}

.message-content:not(:empty) .message-placeholder {
  display: none;
}

.message-content:not(:empty) {
  background: linear-gradient(135deg, #f0f4ff 0%, #e0e7ff 100%);
  border-color: var(--primary-200);
  color: var(--gray-800);
  white-space: pre-wrap;
  line-height: 1.6;
}

/* Audio Controls */
.audio-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex-shrink: 0;
}

.audio-btn {
  width: 48px;
  height: 48px;
  border: none;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

.speaker-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.speaker-btn.playing {
  animation: pulse 2s ease-in-out infinite;
}

.speaker-btn.loading svg {
  animation: spin 1s linear infinite;
}

.stop-btn {
  background: var(--error-50);
  color: var(--error-600);
  border: 2px solid var(--error-200);
}

.stop-btn:hover:not(:disabled) {
  background: var(--error-500);
  color: white;
  transform: scale(1.05);
}

.stop-btn.active {
  background: var(--error-500);
  color: white;
  animation: pulse-red 2s ease-in-out infinite;
}

.audio-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Podcast Card */
.podcast-card {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.podcast-actions {
  margin-bottom: var(--space-4);
}

.podcast-btn {
  width: 100%;
  justify-content: center;
}

.podcast-container {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  border: 2px solid var(--gray-200);
  margin-top: var(--space-4);
}

.podcast-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: var(--space-4);
}

.podcast-progress {
  margin-bottom: var(--space-4);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  width: 0%;
  transition: width var(--transition-normal);
}

.current-speaker {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  font-style: italic;
}

.podcast-controls {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.podcast-control-btn {
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

.play-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.play-btn.playing {
  animation: pulse 2s ease-in-out infinite;
}

.stop-btn {
  background: var(--error-50);
  color: var(--error-600);
  border: 2px solid var(--error-200);
}

.stop-btn:hover:not(:disabled) {
  background: var(--error-500);
  color: white;
  transform: scale(1.05);
}

.podcast-control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Footer */
.app-footer {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  padding: var(--space-6) var(--space-4);
  margin-top: auto;
}

.footer-content {
  text-align: center;
}

.footer-content p {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-3);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-link {
  color: var(--gray-500);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

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

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

/* Responsive Design */
@media (max-width: 480px) {
  .app-container {
    max-width: 100%;
  }
  
  .main-content {
    padding: var(--space-4);
    gap: var(--space-4);
  }
  
  .card {
    padding: var(--space-4);
  }
  
  .card-actions {
    flex-direction: column;
  }
  
  .card-actions .btn {
    flex: none;
  }
  
  .message-container {
    flex-direction: column;
  }
  
  .audio-controls {
    flex-direction: row;
    justify-content: center;
  }
  
  .logo h1 {
    font-size: var(--font-size-2xl);
  }
  
  .subtitle {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 360px) {
  .main-content {
    padding: var(--space-3);
  }
  
  .card {
    padding: var(--space-3);
  }
  
  .btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-50: #1f2937;
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-300: #6b7280;
    --gray-400: #9ca3af;
    --gray-500: #d1d5db;
    --gray-600: #e5e7eb;
    --gray-700: #f3f4f6;
    --gray-800: #f9fafb;
    --gray-900: #ffffff;
  }
  
  .app-container {
    background: var(--gray-900);
  }
  
  .card {
    background: var(--gray-800);
    border-color: var(--gray-700);
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    background: var(--gray-800);
    border-color: var(--gray-600);
    color: var(--gray-100);
  }
  
  .message-content {
    background: var(--gray-800);
    border-color: var(--gray-600);
  }
  
  .podcast-container {
    background: var(--gray-800);
    border-color: var(--gray-600);
  }
}

/* PWA specific styles */
@media (display-mode: standalone) {
  .app-container {
    max-width: 100%;
    height: 100vh;
  }
  
  .main-content {
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .app-header {
    padding-top: calc(var(--space-6) + env(safe-area-inset-top));
  }
}

/* Loading states */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Focus states for accessibility */
.btn:focus-visible,
.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible,
.audio-btn:focus-visible,
.podcast-control-btn:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Loading and Error States */
.loading-message,
.error-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--gray-500);
}

.loading-icon,
.error-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
  opacity: 0.7;
}

.loading-icon {
  animation: float 2s ease-in-out infinite;
}

.error-message {
  color: var(--error-600);
}

.error-icon {
  color: var(--error-500);
}

/* Enhanced animations */
.fade-in {
  animation: fadeInUp 0.5s ease-out;
}

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

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

/* PWA Install Prompt */
.install-prompt {
  position: fixed;
  bottom: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  background: var(--gradient-primary);
  color: white;
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 1000;
  animation: slideInUp 0.3s ease-out;
}

.install-prompt-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.install-prompt-text {
  flex: 1;
}

.install-prompt-text h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.install-prompt-text p {
  font-size: var(--font-size-xs);
  opacity: 0.9;
}

.install-prompt-actions {
  display: flex;
  gap: var(--space-2);
}

.install-btn {
  background: white;
  color: var(--primary-600);
  border: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.install-btn:hover {
  background: var(--gray-50);
  transform: scale(1.05);
}

.dismiss-btn {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dismiss-btn:hover {
  background: rgba(255,255,255,0.1);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card {
    border-width: 2px;
  }
  
  .btn {
    border-width: 2px;
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    border-width: 2px;
  }
}

/* Ebook Card Styles */
.ebook-card {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.ebook-actions {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.ebook-btn {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.ebook-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.ebook-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.2);
}

.ebook-container {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--gray-200);
}

.ebook-info {
  text-align: center;
}

.ebook-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--gray-800);
  margin: 0 0 var(--space-4) 0;
}

.ebook-status {
  margin-bottom: var(--space-4);
}

.status-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  animation: pulse 2s infinite;
}

.status-dot.generating {
  background: #f59e0b;
}

.status-dot.error {
  background: #ef4444;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

#ebookStatus {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
}

.ebook-actions-inner {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.download-btn {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.download-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
}

.preview-btn {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.preview-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.download-btn:disabled,
.preview-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Dark mode ebook styles */
@media (prefers-color-scheme: dark) {
  .ebook-card {
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-700) 100%);
  }
  
  .ebook-container {
    background: var(--gray-800);
    border-color: var(--gray-600);
  }
  
  .ebook-title {
    color: var(--gray-100);
  }
  
  #ebookStatus {
    color: var(--gray-400);
  }
}

/* Mobile responsiveness for ebook section */
@media (max-width: 768px) {
  .ebook-container {
    padding: var(--space-4);
  }
  
  .ebook-actions-inner {
    flex-direction: column;
    align-items: center;
  }
  
  .download-btn,
  .preview-btn {
    width: 100%;
    max-width: 200px;
  }
}

/* Personalized Notifications Styles */
.personalized-notifications-card {
  background: var(--gradient-card);
  border: 1px solid var(--gray-200);
}

.personalized-notifications-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.notification-preview {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 20px;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.preview-header h4 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
}

.message-count {
  font-size: 0.85rem;
  color: var(--gray-600);
  background: var(--primary-100);
  padding: 4px 8px;
  border-radius: 6px;
}

.messages-list {
  max-height: 200px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message-item {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 12px;
  font-size: 0.9rem;
  color: var(--gray-700);
  position: relative;
  animation: slideInRight 0.3s ease-out;
}

.message-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary-500);
  border-radius: 4px 0 0 4px;
}

.message-item.motivational::before {
  background: #f59e0b;
}

.message-item.reminder::before {
  background: #10b981;
}

.message-item.affirmation::before {
  background: #8b5cf6;
}

.message-item.progress::before {
  background: #ef4444;
}

.message-placeholder {
  text-align: center;
  padding: 20px;
  color: var(--gray-500);
}

.placeholder-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.message-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  margin-top: 8px;
}

.type-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  background: var(--gray-50);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.type-option:hover {
  background: var(--gray-100);
}

.type-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-500);
}

.type-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-700);
}

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

/* Notification Settings Styles */
.notification-card {
  background: var(--gradient-card);
  border: 1px solid var(--gray-200);
}

.notification-settings {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  animation: fadeInUp 0.3s ease-out;
}

.setting-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 8px 0;
}

.setting-checkbox {
  position: relative;
  width: 20px;
  height: 20px;
  appearance: none;
  background: var(--gray-100);
  border: 2px solid var(--gray-300);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.setting-checkbox:checked {
  background: var(--primary-500);
  border-color: var(--primary-500);
}

.setting-checkbox:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 12px;
  font-weight: bold;
}

.checkmark {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--gray-100);
  border: 2px solid var(--gray-300);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.setting-text {
  font-weight: 500;
  color: var(--gray-700);
  font-size: 0.95rem;
}

.setting-select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  background: white;
  font-size: 0.9rem;
  color: var(--gray-700);
  cursor: pointer;
  transition: all 0.2s ease;
}

.setting-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.time-range {
  display: flex;
  align-items: center;
  gap: 8px;
}

.time-input {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  background: white;
  font-size: 0.9rem;
  color: var(--gray-700);
  cursor: pointer;
  transition: all 0.2s ease;
}

.time-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.notification-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.notification-actions .btn {
  flex: 1;
  min-width: 140px;
}

/* Notification Status Indicators */
.notification-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--success-50);
  border: 1px solid var(--success-500);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--success-600);
}

.notification-status.error {
  background: var(--error-50);
  border-color: var(--error-500);
  color: var(--error-600);
}

.notification-status.warning {
  background: var(--warning-50);
  border-color: var(--warning-500);
  color: var(--warning-500);
}

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

/* Dark mode for notification settings */
@media (prefers-color-scheme: dark) {
  .notification-card {
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-700) 100%);
  }
  
  .setting-checkbox {
    background: var(--gray-700);
    border-color: var(--gray-600);
  }
  
  .setting-checkbox:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
  }
  
  .setting-text {
    color: var(--gray-300);
  }
  
  .setting-select,
  .time-input {
    background: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--gray-200);
  }
  
  .setting-select:focus,
  .time-input:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  }
}

/* Mobile responsiveness for notification settings */
@media (max-width: 768px) {
  .notification-actions {
    flex-direction: column;
  }
  
  .notification-actions .btn {
    width: 100%;
  }
  
  .time-range {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}