/* Material 3 Expressive Light Theme Only */
@import url('theme.css');

/* Animation Variables */
:root {
  --animation-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --animation-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --animation-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --animation-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --animation-emphasized: 0.5s cubic-bezier(0.2, 0, 0, 1);
  
  /* Enhanced Shadow Variables */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-2: 0 4px 8px rgba(0, 0, 0, 0.16), 0 2px 4px rgba(0, 0, 0, 0.12);
  --shadow-3: 0 8px 16px rgba(0, 0, 0, 0.20), 0 4px 8px rgba(0, 0, 0, 0.16);
  --shadow-4: 0 12px 24px rgba(0, 0, 0, 0.24), 0 6px 12px rgba(0, 0, 0, 0.20);
  --shadow-5: 0 16px 32px rgba(0, 0, 0, 0.28), 0 8px 16px rgba(0, 0, 0, 0.24);
  
  /* Enhanced Border Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-3xl: 28px;
  --radius-full: 9999px;
  
  /* Enhanced Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, color-mix(in srgb, var(--primary) 85%, var(--secondary)) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary) 0%, color-mix(in srgb, var(--secondary) 85%, var(--tertiary)) 100%);
  --gradient-tertiary: linear-gradient(135deg, var(--tertiary) 0%, color-mix(in srgb, var(--tertiary) 85%, var(--primary)) 100%);
  --gradient-surface: linear-gradient(135deg, var(--surface-container) 0%, var(--surface) 100%);
  --gradient-elevated: linear-gradient(135deg, var(--surface-container-high) 0%, var(--surface-container) 100%);
  --gradient-background: linear-gradient(135deg, #F8F4FF 0%, #EADDFF 25%, #F3EDF7 50%, #E8DEF8 75%, #F8F4FF 100%);
}

/* Global Styles */
* {
  box-sizing: border-box;
}

html {
  view-transition-name: root;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto Flex', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--gradient-background);
  color: var(--on-background);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-attachment: fixed;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

/* Typography */
.app-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 400;
  color: var(--primary);
  margin: 8px 0 24px;
  letter-spacing: -0.5px;
  animation: fadeIn var(--animation-slow);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--on-surface);
  font-weight: 400;
  letter-spacing: -0.25px;
}

/* Enhanced Material 3 Cards */
.card {
  background: var(--surface-container);
  color: var(--on-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--outline-variant);
  box-shadow: var(--shadow-2);
  padding: 24px;
  transition: all var(--animation-normal);
  position: relative;
  overflow: hidden;
  animation: fadeIn var(--animation-normal);
  backdrop-filter: blur(10px);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--primary) 15%, transparent), transparent);
  transition: left var(--animation-slow);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-4);
  border-color: var(--primary);
  background: var(--gradient-elevated);
}

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

/* Enhanced Material 3 Buttons */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--on-primary);
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--animation-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  min-height: 44px;
  box-shadow: var(--shadow-2);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--animation-emphasized), height var(--animation-emphasized);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-1);
}

.btn-primary:active::before {
  width: 300px;
  height: 300px;
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--on-secondary);
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--animation-normal);
  cursor: pointer;
  min-height: 44px;
  box-shadow: var(--shadow-1);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  filter: brightness(1.05);
}

.btn-text {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--outline);
  padding: 12px 20px;
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--animation-normal);
  cursor: pointer;
  min-height: 40px;
}

.btn-text:hover {
  background: var(--primary-container);
  color: var(--on-primary-container);
  transform: translateY(-1px);
  border-color: var(--primary);
  box-shadow: var(--shadow-1);
}

.btn-danger {
  background: var(--gradient-tertiary);
  color: var(--on-tertiary);
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--animation-normal);
  cursor: pointer;
  min-height: 44px;
  box-shadow: var(--shadow-2);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
  filter: brightness(1.05);
}

/* Enhanced Form Elements */
input, textarea, select {
  background: var(--surface-container);
  color: var(--on-surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 16px;
  font-family: inherit;
  transition: all var(--animation-normal);
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 25%, transparent);
  transform: translateY(-2px);
  background: color-mix(in srgb, var(--surface-container) 95%, var(--primary) 5%);
}

input::placeholder, textarea::placeholder {
  color: var(--on-surface-variant);
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--on-surface);
  font-size: 14px;
}

/* Enhanced Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--gradient-secondary);
  color: var(--on-secondary);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.1px;
  border: 1px solid var(--outline);
  transition: all var(--animation-normal);
  box-shadow: var(--shadow-1);
}

.chip:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
  filter: brightness(1.05);
}

/* Enhanced Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-container);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.table th {
  background: var(--gradient-surface);
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1px;
  text-align: left;
  padding: 16px;
  border-bottom: 1px solid var(--outline-variant);
}

.table td {
  padding: 16px;
  border-bottom: 1px solid var(--outline-variant);
  color: var(--on-surface);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tbody tr:hover {
  background: var(--gradient-surface);
  transform: scale(1.01);
}

/* Helper Text */
.helper {
  color: var(--on-surface-variant);
  font-size: 14px;
  margin-top: 4px;
}

/* Profile settings layout */
.profile-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  align-items: start;
}
@media (max-width: 720px) {
  .profile-grid {
    grid-template-columns: 1fr;
  }
}

.ml-auto {
  margin-left: auto !important;
}

/* ebook viewer styles */
.ebook-chapter {
  margin-top: 24px;
}
.ebook-chapter h3 {
  font-size: 24px;
  margin-bottom: 8px;
}



.small-muted {
  color: var(--on-surface-variant);
  font-size: 12px;
}

/* Enhanced Status Messages */
.status-message {
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  margin: 16px 0;
  font-weight: 500;
  animation: slideIn var(--animation-normal);
  border-left: 4px solid;
  box-shadow: var(--shadow-1);
}

.status-success {
  background: color-mix(in srgb, var(--tertiary-container) 50%, white);
  color: var(--on-tertiary-container);
  border-left-color: var(--tertiary);
}

.status-error {
  background: color-mix(in srgb, var(--error-container) 50%, white);
  color: var(--on-error-container);
  border-left-color: var(--error);
}

.status-info {
  background: color-mix(in srgb, var(--primary-container) 50%, white);
  color: var(--on-primary-container);
  border-left-color: var(--primary);
}

/* Enhanced Connection Indicator */
.connection-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  transition: all var(--animation-normal);
  box-shadow: var(--shadow-1);
}

.connection-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transition: all var(--animation-normal);
}

.connection-indicator.connected {
  background: var(--gradient-primary);
  color: var(--on-primary);
}

.connection-indicator.connected .dot {
  background: var(--on-primary);
  animation: pulse 2s ease-in-out infinite;
}

.connection-indicator.disconnected {
  background: var(--surface-container);
  color: var(--on-surface-variant);
}

.connection-indicator.disconnected .dot {
  background: var(--error);
}

/* Enhanced Score Items */
.score-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  margin: 8px 0;
  background: var(--gradient-surface);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
  transition: all var(--animation-normal);
  animation: slideIn var(--animation-normal);
  box-shadow: var(--shadow-1);
}

.score-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-3);
  background: var(--gradient-elevated);
  border-left-color: var(--secondary);
}

/* Profile Container and Dropdown */
.profile-container {
  position: relative;
  display: flex;
  align-items: center;
}

.profile-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--gradient-surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--animation-normal);
  font-family: inherit;
  font-size: 14px;
  color: var(--on-surface);
  box-shadow: var(--shadow-1);
}

.profile-btn:hover {
  background: var(--gradient-elevated);
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
}

.profile-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}

.profile-name {
  font-weight: 500;
  color: var(--on-surface);
}

.dropdown-arrow {
  transition: transform var(--animation-normal);
  color: var(--on-surface-variant);
}

.profile-container.active .dropdown-arrow {
  transform: rotate(180deg);
}

.profile-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--surface-container);
  border: 1px solid var(--outline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-4);
  min-width: 280px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--animation-normal);
  backdrop-filter: blur(10px);
}

.profile-container.active .profile-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.menu-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--outline-variant);
  background: var(--gradient-surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.menu-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
  background: var(--surface-variant);
}

.menu-info {
  flex: 1;
}

.menu-name {
  font-weight: 500;
  color: var(--on-surface);
  font-size: 14px;
}

.menu-email {
  font-size: 12px;
  color: var(--on-surface-variant);
  margin-top: 2px;
}

.profile-menu a {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  color: var(--on-surface);
  text-decoration: none;
  transition: all var(--animation-normal);
  font-size: 14px;
  gap: 12px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.profile-menu a:hover {
  background: var(--gradient-surface);
  color: var(--primary);
}

.profile-menu a.logout {
  color: var(--error);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.profile-menu a.logout:hover {
  background: color-mix(in srgb, var(--error) 8%, transparent);
  color: var(--error);
}

.divider {
  height: 1px;
  background: var(--outline-variant);
  margin: 0;
  border: none;
}

/* Enhanced Animations */
@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(12px) scale(0.95); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0) scale(1); 
  }
}

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

@keyframes scaleIn {
  from { 
    opacity: 0; 
    transform: scale(0.85); 
  }
  to { 
    opacity: 1; 
    transform: scale(1); 
  }
}

@keyframes pulse {
  0%, 100% { 
    transform: scale(1); 
    opacity: 1;
  }
  50% { 
    transform: scale(1.05); 
    opacity: 0.8;
  }
}

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

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% { 
    transform: translateY(0); 
  }
  40%, 43% { 
    transform: translateY(-10px); 
  }
  70% { 
    transform: translateY(-5px); 
  }
}

@keyframes glow {
  0%, 100% { 
    box-shadow: 0 0 12px color-mix(in srgb, var(--primary) 40%, transparent); 
  }
  50% { 
    box-shadow: 0 0 24px color-mix(in srgb, var(--primary) 60%, transparent); 
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

/* Animation Classes */
.fade-in { animation: fadeIn var(--animation-normal) forwards; }
.slide-in { animation: slideIn var(--animation-normal) forwards; }
.scale-in { animation: scaleIn var(--animation-bounce) forwards; }
.pulse { animation: pulse var(--animation-slow) infinite; }
.bounce { animation: bounce var(--animation-bounce) forwards; }
.glow { animation: glow 2s ease-in-out infinite; }
.float { animation: float 3s ease-in-out infinite; }

/* View Transitions */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
}

::view-transition-old(card),
::view-transition-new(card) {
  animation: fadeIn var(--animation-emphasized);
}

/* Alternative: Add unique view-transition-names dynamically */
.card:nth-child(1) { view-transition-name: card-1; }
.card:nth-child(2) { view-transition-name: card-2; }
.card:nth-child(3) { view-transition-name: card-3; }
.card:nth-child(4) { view-transition-name: card-4; }
.card:nth-child(5) { view-transition-name: card-5; }

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 16px;
  }
  
  .card {
    padding: 16px;
  }
  
  .app-title {
    font-size: clamp(28px, 8vw, 36px);
  }
  
  .btn-primary, .btn-secondary, .btn-text, .btn-danger {
    padding: 12px 20px;
    font-size: 13px;
  }
  
  .profile-menu {
    right: -8px;
    min-width: 260px;
  }
}

/* Enhanced Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--surface-dim);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--outline);
  border-radius: var(--radius-full);
  transition: all var(--animation-normal);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
  transform: scale(1.1);
}

/* Enhanced Focus Styles */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Enhanced Selection */
::selection {
  background: var(--primary-container);
}

/* Utility helpers */
.center-card {
  max-width: 420px;
  margin: 40px auto;
}

.mt-8 { margin-top: 8px !important; }
.mt-12 { margin-top: 12px !important; }
.mb-12 { margin-bottom: 12px !important; }
.mb-20 { margin-bottom: 20px !important; }
.mt-4 { margin-top: 4px !important; }
.flex-grow { flex: 1; }

.row {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* small modifier for buttons and inputs */
.small {
  font-size: 12px;
  padding: 6px 12px !important;
  min-height: 32px;
}


  color: var(--on-primary-container);
  border-radius: var(--radius-xs);
}

/* Spinner */
.spinner {
  border: 4px solid var(--surface-container-low);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin 1s linear infinite, pulse 2s ease-in-out infinite;
  margin: 20px auto;
}