/* ============================================
   Brief Bench - Material Design CSS System
   ============================================ */

/* CSS Variables - Material Design Tokens */
:root {
  /* Colors - Material Design 3 inspired */
  --md-primary: #1976d2;
  --md-primary-dark: #115293;
  --md-primary-light: #4791db;
  --md-secondary: #26a69a;
  --md-error: #d32f2f;
  --md-warning: #f57c00;
  --md-success: #388e3c;
  --md-info: #0288d1;

  /* Neutrals */
  --md-surface: #ffffff;
  --md-surface-variant: #f5f5f5;
  --md-background: #fafafa;
  --md-on-surface: rgba(0, 0, 0, 0.87);
  --md-on-surface-variant: rgba(0, 0, 0, 0.60);
  --md-on-surface-disabled: rgba(0, 0, 0, 0.38);
  --md-outline: rgba(0, 0, 0, 0.12);
  --md-divider: rgba(0, 0, 0, 0.12);

  /* Shadows */
  --md-shadow-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --md-shadow-2: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
  --md-shadow-3: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
  --md-shadow-4: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
  --md-shadow-5: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);

  /* Typography */
  --md-font-family: 'Roboto', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --md-font-mono: 'Roboto Mono', 'Consolas', 'Monaco', monospace;

  /* Spacing */
  --md-spacing-xs: 4px;
  --md-spacing-sm: 8px;
  --md-spacing-md: 16px;
  --md-spacing-lg: 24px;
  --md-spacing-xl: 32px;
  --md-spacing-xxl: 48px;

  /* Borders & Radius */
  --md-radius-sm: 4px;
  --md-radius-md: 8px;
  --md-radius-lg: 12px;
  --md-radius-xl: 16px;

  /* Transitions */
  --md-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --md-transition-medium: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --md-transition-slow: 375ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --app-bar-height: 64px;
  --drawer-width: 320px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
  height: 100%;
  font-size: 16px;
}

body {
  font-family: var(--md-font-family);
  color: var(--md-on-surface);
  background-color: var(--md-background);
  line-height: 1.5;
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--md-spacing-md);
}

h1 { font-size: 2.5rem; font-weight: 300; }
h2 { font-size: 2rem; font-weight: 400; }
h3 { font-size: 1.75rem; font-weight: 400; }
h4 { font-size: 1.5rem; font-weight: 500; }
h5 { font-size: 1.25rem; font-weight: 500; }
h6 { font-size: 1rem; font-weight: 500; }

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

.text-caption {
  font-size: 0.75rem;
  color: var(--md-on-surface-variant);
}

.text-overline {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--md-on-surface-variant);
}

.text-mono {
  font-family: var(--md-font-mono);
}

/* ============================================
   Layout
   ============================================ */

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ============================================
   Environment Tabs
   ============================================ */

.environment-tabs {
  display: flex;
  background-color: var(--md-surface);
  border-bottom: 2px solid var(--md-divider);
  box-shadow: var(--md-shadow-1);
  z-index: 90;
}

.env-tab {
  flex: 1;
  padding: 12px 24px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--md-font-family);
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--md-on-surface-variant);
  position: relative;
  transition: all var(--md-transition-fast);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}

.env-tab:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.env-tab.active {
  color: var(--md-primary);
  border-bottom-color: var(--md-primary);
  background-color: rgba(25, 118, 210, 0.08);
}

.app-content {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ============================================
   AppBar
   ============================================ */

.app-bar {
  height: var(--app-bar-height);
  background-color: var(--md-primary);
  color: white;
  display: flex;
  align-items: center;
  padding: 0 var(--md-spacing-md);
  box-shadow: var(--md-shadow-2);
  position: relative;
  z-index: 100;
}

.app-bar-title {
  font-size: 1.25rem;
  font-weight: 500;
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--md-spacing-md);
}

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

/* ============================================
   Drawer / Sidebar
   ============================================ */

.drawer {
  width: var(--drawer-width);
  background-color: var(--md-surface);
  border-right: 1px solid var(--md-divider);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  z-index: 50;
  transition: transform var(--md-transition-medium), width var(--md-transition-medium);
}

.drawer.collapsed {
  transform: translateX(-100%);
  width: 0;
  border-right: none;
}

.drawer-header {
  padding: var(--md-spacing-md);
  border-bottom: 1px solid var(--md-divider);
  background-color: var(--md-surface-variant);
  display: flex;
  align-items: center;
  gap: var(--md-spacing-sm);
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Custom scrollbar */
.drawer-content::-webkit-scrollbar {
  width: 8px;
}

.drawer-content::-webkit-scrollbar-track {
  background: var(--md-surface-variant);
}

.drawer-content::-webkit-scrollbar-thumb {
  background: var(--md-outline);
  border-radius: 4px;
}

.drawer-content::-webkit-scrollbar-thumb:hover {
  background: var(--md-on-surface-variant);
}

/* ============================================
   Main Area
   ============================================ */

.main-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--md-background);
  padding: var(--md-spacing-lg);
}

/* ============================================
   Cards
   ============================================ */

.card {
  background-color: var(--md-surface);
  border-radius: var(--md-radius-md);
  box-shadow: var(--md-shadow-1);
  overflow: hidden;
  transition: box-shadow var(--md-transition-fast);
}

.card:hover {
  box-shadow: var(--md-shadow-2);
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0;
}

.card-content {
  padding: var(--md-spacing-md);
}

.card-actions {
  padding: var(--md-spacing-sm) var(--md-spacing-md);
  border-top: 1px solid var(--md-divider);
  display: flex;
  gap: var(--md-spacing-sm);
  justify-content: flex-end;
}

.card-clickable {
  cursor: pointer;
  transition: all var(--md-transition-fast);
}

.card-clickable:hover {
  background-color: var(--md-surface-variant);
  transform: translateY(-2px);
  box-shadow: var(--md-shadow-3);
}

.card-clickable.active {
  border-left: 4px solid var(--md-primary);
  background-color: rgba(25, 118, 210, 0.08);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  font-family: var(--md-font-family);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--md-radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--md-spacing-sm);
  transition: all var(--md-transition-fast);
  position: relative;
  overflow: hidden;
  outline: none;
}

.btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button variants */
.btn-filled {
  background-color: var(--md-primary);
  color: white;
  box-shadow: var(--md-shadow-1);
}

.btn-filled:hover:not(:disabled) {
  background-color: var(--md-primary-dark);
  box-shadow: var(--md-shadow-2);
}

.btn-filled:active:not(:disabled) {
  box-shadow: var(--md-shadow-3);
}

.btn-outlined {
  background-color: transparent;
  color: var(--md-primary);
  border: 1px solid var(--md-primary);
}

.btn-outlined:hover:not(:disabled) {
  background-color: rgba(25, 118, 210, 0.08);
}

.btn-text {
  background-color: transparent;
  color: var(--md-primary);
}

.btn-text:hover:not(:disabled) {
  background-color: rgba(25, 118, 210, 0.08);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 50%;
  background-color: transparent;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  transition: background-color var(--md-transition-fast);
}

.btn-icon:hover:not(:disabled) {
  background-color: rgba(0, 0, 0, 0.08);
}

.app-bar .btn-icon {
  color: white;
}

.app-bar .btn-icon:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   Form Controls
   ============================================ */

.form-group {
  margin-bottom: var(--md-spacing-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--md-spacing-sm);
  color: var(--md-on-surface-variant);
}

.form-input,
.form-textarea,
.form-select {
  font-family: var(--md-font-family);
  font-size: 1rem;
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--md-outline);
  border-radius: var(--md-radius-sm);
  background-color: var(--md-surface);
  color: var(--md-on-surface);
  transition: all var(--md-transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.2);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--md-error);
}

.form-input.error:focus,
.form-textarea.error:focus {
  box-shadow: 0 0 0 2px rgba(211, 47, 47, 0.2);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: var(--md-font-mono);
}

.form-helper-text {
  font-size: 0.75rem;
  margin-top: var(--md-spacing-xs);
  color: var(--md-on-surface-variant);
}

.form-helper-text.error {
  color: var(--md-error);
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--md-spacing-sm);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

.checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* ============================================
   Tabs
   ============================================ */

.tabs {
  display: flex;
  border-bottom: 2px solid var(--md-divider);
  background-color: var(--md-surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab {
  flex: 1;
  padding: 12px 24px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--md-font-family);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--md-on-surface-variant);
  position: relative;
  transition: all var(--md-transition-fast);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

.tab:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.tab.active {
  color: var(--md-primary);
  border-bottom-color: var(--md-primary);
}

.tab-content {
  display: none;
  padding: var(--md-spacing-md);
  animation: fadeIn var(--md-transition-fast);
}

.tab-content.active {
  display: block;
}

/* ============================================
   Dialog / Modal
   ============================================ */

.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn var(--md-transition-medium);
}

.dialog-overlay.open {
  display: flex;
}

.dialog {
  background-color: var(--md-surface);
  border-radius: var(--md-radius-lg);
  box-shadow: var(--md-shadow-5);
  min-width: 400px;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: slideUp var(--md-transition-medium);
}

.dialog-header {
  padding: var(--md-spacing-lg);
  border-bottom: 1px solid var(--md-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dialog-title {
  font-size: 1.5rem;
  font-weight: 400;
  margin: 0;
}

.dialog-content {
  padding: var(--md-spacing-lg);
  overflow-y: auto;
  flex: 1;
}

.dialog-actions {
  padding: var(--md-spacing-md) var(--md-spacing-lg);
  border-top: 1px solid var(--md-divider);
  display: flex;
  gap: var(--md-spacing-sm);
  justify-content: flex-end;
}

/* ============================================
   Expansion Panel / Accordion
   ============================================ */

.expansion-panel {
  border: 1px solid var(--md-divider);
  border-radius: var(--md-radius-sm);
  margin-bottom: var(--md-spacing-sm);
  overflow: hidden;
  transition: all var(--md-transition-fast);
}

.expansion-panel:hover {
  box-shadow: var(--md-shadow-1);
}

.expansion-header {
  padding: var(--md-spacing-md);
  background-color: var(--md-surface-variant);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  -webkit-user-select: none;
  user-select: none;
  transition: background-color var(--md-transition-fast);
}

.expansion-header:hover {
  background-color: rgba(0, 0, 0, 0.08);
}

.expansion-header-title {
  font-weight: 500;
}

.expansion-icon {
  transition: transform var(--md-transition-fast);
  display: inline-flex;
}

.expansion-panel.expanded .expansion-icon {
  transform: rotate(180deg);
}

.expansion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--md-transition-medium);
}

.expansion-panel.expanded .expansion-content {
  max-height: 2000px;
}

.expansion-body {
  padding: var(--md-spacing-md);
  border-top: 1px solid var(--md-divider);
}

/* ============================================
   Loading / Spinner
   ============================================ */

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--md-outline);
  border-top-color: var(--md-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-small {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  flex-direction: column;
  gap: var(--md-spacing-lg);
}

.loading-overlay.open {
  display: flex;
}

.loading-message {
  color: white;
  font-size: 1.25rem;
  text-align: center;
}

.loading-submessage {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

/* ============================================
   Chips
   ============================================ */

.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.875rem;
  background-color: var(--md-surface-variant);
  color: var(--md-on-surface);
  margin: 2px;
  gap: var(--md-spacing-xs);
}

.chip-error {
  background-color: rgba(211, 47, 47, 0.1);
  color: var(--md-error);
}

.chip-warning {
  background-color: rgba(245, 124, 0, 0.1);
  color: var(--md-warning);
}

.chip-success {
  background-color: rgba(56, 142, 60, 0.1);
  color: var(--md-success);
}

/* ============================================
   Table Rendering
   ============================================ */

.table-container {
  overflow-x: auto;
  margin: var(--md-spacing-md) 0;
  border-radius: var(--md-radius-sm);
  background-color: var(--md-surface-variant);
}

.text-table {
  font-family: var(--md-font-mono);
  font-size: 0.875rem;
  padding: var(--md-spacing-md);
  white-space: pre;
  overflow-x: auto;
  background-color: var(--md-surface-variant);
  border-radius: var(--md-radius-sm);
  border: 1px solid var(--md-divider);
}

table.rendered-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

table.rendered-table th,
table.rendered-table td {
  padding: 12px;
  text-align: left;
  border: 1px solid var(--md-divider);
}

table.rendered-table th {
  background-color: var(--md-surface-variant);
  font-weight: 500;
  color: var(--md-on-surface-variant);
}

table.rendered-table tbody tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.02);
}

table.rendered-table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

/* ============================================
   List Items
   ============================================ */

.list-item {
  padding: var(--md-spacing-md);
  border-bottom: 1px solid var(--md-divider);
  cursor: pointer;
  transition: background-color var(--md-transition-fast);
}

.list-item:hover {
  background-color: var(--md-surface-variant);
}

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

.list-item-primary {
  font-weight: 500;
  margin-bottom: var(--md-spacing-xs);
}

.list-item-secondary {
  font-size: 0.875rem;
  color: var(--md-on-surface-variant);
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

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

.mt-sm { margin-top: var(--md-spacing-sm); }
.mt-md { margin-top: var(--md-spacing-md); }
.mt-lg { margin-top: var(--md-spacing-lg); }

.mb-sm { margin-bottom: var(--md-spacing-sm); }
.mb-md { margin-bottom: var(--md-spacing-md); }
.mb-lg { margin-bottom: var(--md-spacing-lg); }

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

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

.color-error { color: var(--md-error); }
.color-warning { color: var(--md-warning); }
.color-success { color: var(--md-success); }
.color-primary { color: var(--md-primary); }

/* ============================================
   Animations
   ============================================ */

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

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  :root {
    --drawer-width: 280px;
    --app-bar-height: 56px;
  }

  .drawer {
    position: absolute;
    left: 0;
    height: 100%;
    z-index: 150;
    transition: left var(--md-transition-medium);
    box-shadow: var(--md-shadow-3);
    transform: none;
  }

  .drawer.collapsed {
    left: -100%;
    transform: none;
  }

  .dialog {
    min-width: 300px;
  }

  .main-area {
    padding: var(--md-spacing-md);
  }
}

/* ============================================
   Component-specific Styles
   ============================================ */

/* Question List Item */
.question-item {
  margin-bottom: var(--md-spacing-sm);
}

.question-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--md-spacing-xs);
}

.question-text {
  font-weight: 500;
  flex: 1;
  word-break: break-word;
}

.question-meta {
  display: flex;
  gap: var(--md-spacing-sm);
  font-size: 0.75rem;
  color: var(--md-on-surface-variant);
}

/* Annotation Controls */
.annotation-section {
  margin-top: var(--md-spacing-md);
  padding: var(--md-spacing-md);
  background-color: var(--md-surface-variant);
  border-radius: var(--md-radius-sm);
}

.annotation-issues {
  display: flex;
  flex-wrap: wrap;
  gap: var(--md-spacing-sm);
  margin-bottom: var(--md-spacing-md);
}

.issue-checkbox {
  display: flex;
  align-items: center;
  gap: var(--md-spacing-xs);
  padding: 6px 12px;
  background-color: var(--md-surface);
  border: 1px solid var(--md-outline);
  border-radius: var(--md-radius-sm);
  cursor: pointer;
  transition: all var(--md-transition-fast);
  -webkit-user-select: none;
  user-select: none;
}

.issue-checkbox:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.issue-checkbox.checked {
  background-color: rgba(211, 47, 47, 0.1);
  border-color: var(--md-error);
  color: var(--md-error);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--md-spacing-xxl);
  text-align: center;
  color: var(--md-on-surface-variant);
}

.empty-state-icon {
  font-size: 4rem;
  opacity: 0.3;
  margin-bottom: var(--md-spacing-md);
}

.empty-state-text {
  font-size: 1.25rem;
  margin-bottom: var(--md-spacing-sm);
}

.empty-state-subtext {
  font-size: 0.875rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background-color: var(--md-error);
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Toggle Switch */
.toggle-group {
  display: inline-flex;
  border: 1px solid var(--md-outline);
  border-radius: var(--md-radius-sm);
  overflow: hidden;
}

.toggle-option {
  padding: 8px 16px;
  border: none;
  background-color: var(--md-surface);
  color: var(--md-on-surface-variant);
  cursor: pointer;
  font-family: var(--md-font-family);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--md-transition-fast);
  border-right: 1px solid var(--md-divider);
}

.toggle-option:last-child {
  border-right: none;
}

.toggle-option:hover {
  background-color: var(--md-surface-variant);
}

.toggle-option.active {
  background-color: var(--md-primary);
  color: white;
}

/* Metadata Display */
.metadata-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--md-spacing-md);
}

.metadata-item {
  display: flex;
  flex-direction: column;
  gap: var(--md-spacing-xs);
}

.metadata-label {
  font-size: 0.75rem;
  color: var(--md-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metadata-value {
  font-size: 1rem;
  font-weight: 500;
}

/* ============================================ */
/* Login Screen Styles                          */
/* ============================================ */

.login-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-card {
  background: white;
  padding: var(--md-spacing-xxl);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  max-width: 400px;
  width: 90%;
}

.login-card h2 {
  color: #667eea;
  font-weight: 500;
}

.login-card .form-input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.login-card .btn-filled {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  margin-top: var(--md-spacing-md);
}

.login-card .btn-filled:hover {
  opacity: 0.9;
}

.login-card .btn-filled:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}