/* CAForge Design System Tokens & Stylesheet */

:root {
  /* Brand Colors */
  --color-brand-flame: #FF6B35;
  --color-brand-ember: #FFE4D6;
  
  --color-primary: #1C1E26;       /* Ink */
  --color-on-primary: #ffffff;
  
  --color-brand-yellow: var(--color-brand-flame);
  --color-brand-yellow-deep: #e0531f;
  --color-yellow-light: var(--color-brand-ember);
  --color-yellow-dark: #b83a06;
  
  --color-brand-blue: #FF6B35;
  --color-blue-pressed: #e0531f;
  
  --color-brand-coral: #ff9999;
  --color-coral-light: #ffc6c6;
  --color-coral-dark: #600000;
  
  --color-brand-rose: #ffd8f4;
  --color-rose-light: #fde0f0;
  
  --color-brand-teal: #FF6B35;
  --color-teal-light: #FFE4D6;
  --color-moss-dark: #b83a06;
  
  --color-brand-orange-light: #FFE4D6;
  
  /* Surface Colors */
  --bg-main: #EEF0F4;            /* Paper */
  --bg-sidebar: #FFFFFF;         /* White sidebar */
  --bg-card: #FFFFFF;            /* White card */
  --bg-input: #FFFFFF;
  
  /* Borders */
  --border-color: #E4E6EC;       /* hairline */
  --border-color-soft: #EEF0F3;  /* hairline-soft */
  --border-color-strong: #C7CAD5;/* hairline-strong */
  --border-focus: #FF6B35;
  
  /* Text */
  --text-primary: #1C1E26;       /* ink */
  --text-secondary: #52566A;     /* ink-soft */
  --text-muted: #8A8D9C;         /* muted */
  --text-disabled: #a5a8b5;
  
  /* Semantic */
  --color-correct: #2F9E5C;      /* good */
  --color-correct-glow: #E7F6ED; /* good-bg */
  --color-partial: #E8A33D;      /* warn */
  --color-partial-glow: #FDF1DF; /* warn-bg */
  --color-wrong: #E5484D;        /* bad */
  --color-wrong-glow: #FCE8E8;   /* bad-bg */

  /* Fonts */
  --font-headings: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  
  /* Spacing */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 40px;
  
  /* Radius scale */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-xxl: 20px;
  --radius-xxxl: 28px;
  --radius-feature: 32px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(28, 30, 38, 0.04);
  --shadow-md: 0 4px 12px 0 rgba(28, 30, 38, 0.06);
  --shadow-lg: 0 12px 32px -4px rgba(28, 30, 38, 0.08);
  --shadow-modal: 0 16px 48px -8px rgba(28, 30, 38, 0.12);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  height: 100vh;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 500;
  letter-spacing: -0.02em;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-color-strong);
}

/* Top Promo Banner */
.promo-banner {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding: 8px var(--space-md);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  text-align: center;
  z-index: 100;
  position: relative;
}

.badge-promo {
  background-color: var(--color-brand-yellow);
  color: var(--color-primary);
  font-family: var(--font-headings);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
}

/* Base Layout Structure */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Sidebar Layout & Styling */
.sidebar {
  width: 280px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-brand-yellow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headings);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.logo-text h1 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  font-family: var(--font-headings);
  letter-spacing: -0.02em;
}

.logo-text > span {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.logo-text h1 span {
  font-size: inherit;
  font-weight: inherit;
  text-transform: none;
  letter-spacing: inherit;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  cursor: pointer;
  text-align: left;
  transition: var(--transition-fast);
}

.nav-btn:hover {
  background-color: rgba(0, 0, 0, 0.04);
  color: var(--text-primary);
}

.nav-btn.active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
  position: relative;
  padding-left: 24px;
}

.nav-btn.active::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-brand-flame);
}

.nav-icon {
  width: 18px;
  height: 18px;
  transition: var(--transition-fast);
}

.nav-btn.active .nav-icon {
  color: var(--color-on-primary);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
}

.status-dot.online {
  background-color: var(--color-correct);
  box-shadow: 0 0 6px var(--color-correct);
}

.qbank-summary-stats {
  font-size: 12px;
  color: var(--text-muted);
}

.qbank-summary-stats span {
  font-weight: 600;
  color: var(--text-primary);
}

.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100vh;
  overflow-y: auto;
  background-color: var(--bg-main);
}

.app-header {
  height: 70px;
  border-bottom: 1px solid var(--border-color);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  z-index: 10;
  flex-shrink: 0;
}

.header-title h2 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.5px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.streak-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-yellow-light);
  border: 1px solid var(--color-brand-yellow-deep);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-family: var(--font-headings);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-yellow-dark);
}

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

.user-avatar {
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headings);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-on-primary);
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

.view-wrapper {
  padding: 40px;
  flex-grow: 1;
}

/* Tab View Switcher */
.tab-view {
  display: none;
  animation: fadeIn var(--transition-normal);
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Overview Cards (Miro STICKY NOTES style) */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  border: 1px solid var(--border-color-soft);
}

.stat-card:hover {
  transform: translateY(-2px) !important;
  box-shadow: var(--shadow-md);
}

/* Custom pastel backgrounds and matching typography colors */
.stats-grid .stat-card:nth-child(1) {
  background-color: #FFEEDC;
  color: #A24D28;
}

.stats-grid .stat-card:nth-child(2) {
  background-color: #FBE4F5;
  color: #863065;
}

.stats-grid .stat-card:nth-child(3) {
  background-color: #FCE8E8;
  color: #B9252A;
}

.stats-grid .stat-card:nth-child(4) {
  background-color: #FFEEDC;
  color: #A24D28;
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: inherit;
}

.stat-icon {
  width: 28px;
  height: 28px;
  background-color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.stat-value {
  font-family: var(--font-headings);
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1;
  color: var(--text-primary);
}

.stat-sub {
  font-size: 12px;
  font-weight: 500;
  color: inherit;
  opacity: 0.8;
}

.stat-sub.positive {
  color: var(--color-correct);
  font-weight: 600;
}

.stat-sub.negative {
  color: var(--color-wrong);
  font-weight: 600;
}

/* Dashboard Row Middle Layout */
.dashboard-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

@media (max-width: 1100px) {
  .dashboard-row {
    grid-template-columns: 1fr;
  }
}

.dashboard-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.weekly-activity-card {
  display: flex;
  flex-direction: column;
}

.weekly-activity-card h3, .streak-details-card h3 {
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 500;
}

.weekly-chart {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 160px;
  padding-top: 10px;
  gap: 8px;
}

.chart-bar-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-grow: 1;
  gap: 8px;
}

.chart-bar-tooltip {
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-on-primary);
  padding: 4px 8px;
  font-size: 10px;
  position: absolute;
  transform: translateY(-24px);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
  white-space: nowrap;
}

.chart-bar-container:hover .chart-bar-tooltip {
  opacity: 1;
}

.chart-bar-wrapper {
  width: 100%;
  max-width: 32px;
  height: 120px;
  background-color: #FFFFFF;
  border-radius: var(--radius-full);
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border: 1.5px solid var(--border-color);
}

.chart-bar-fill {
  width: 100%;
  background: var(--color-brand-flame);
  border-radius: var(--radius-full);
  height: 0;
  transition: height var(--transition-slow);
}

.chart-bar-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
}

.chart-bar-container.today .chart-bar-label {
  color: var(--color-brand-blue);
  font-weight: 600;
}

/* Streak Details Layout */
.streak-box {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 15px;
  margin-bottom: 15px;
}

.streak-value-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.streak-large {
  font-family: var(--font-headings);
  font-size: 40px;
  font-weight: 500;
  line-height: 1;
  color: var(--color-brand-yellow-deep);
}

.streak-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.streak-divider {
  width: 1px;
  height: 50px;
  background-color: var(--border-color);
}

.streak-caption {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.4;
}

/* Custom CAForge Streak Details Card styling */
.streak-details-card {
  background: linear-gradient(135deg, #1C1E26 0%, #2B2318 100%) !important;
  color: #FFFFFF !important;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 107, 53, 0.15) !important;
  box-shadow: 0 12px 24px -6px rgba(28, 30, 38, 0.4) !important;
}

.streak-details-card::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.3), transparent 70%);
  pointer-events: none;
}

.streak-details-card h3 {
  color: #FFFFFF !important;
  font-family: var(--font-headings);
}

.streak-details-card .streak-box {
  background-color: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--radius-lg);
}

.streak-details-card .streak-large {
  color: var(--color-brand-flame) !important;
  font-weight: 700;
  font-size: 42px;
  font-family: var(--font-headings);
}

.streak-details-card .streak-label {
  color: #C9CBD6 !important;
}

.streak-details-card .streak-divider {
  background-color: rgba(255, 255, 255, 0.15) !important;
}

.streak-details-card .streak-caption {
  color: #A5A8B5 !important;
  position: relative;
  z-index: 1;
}

/* Paper Grid & Cards */
.section-header {
  margin-top: 40px;
  margin-bottom: 20px;
}

.section-header h3 {
  font-size: 18px;
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

@media (max-width: 1024px) {
  .paper-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .paper-grid {
    grid-template-columns: 1fr;
  }
}

.paper-card {
  cursor: pointer;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color-soft);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.paper-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-color-strong);
  box-shadow: var(--shadow-md);
}

.paper-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background-color: var(--color-brand-blue);
}

.paper-card.fr::before { background-color: var(--color-brand-blue); }
.paper-card.afm::before { background-color: var(--color-brand-teal); }
.paper-card.audit::before { background-color: var(--color-brand-coral); }
.paper-card.dt::before { background-color: var(--color-brand-yellow-deep); }
.paper-card.idt::before { background-color: var(--color-brand-rose); }

.detail-header-row {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.detail-header-row h3 {
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
}

.paper-card-header h4 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 4px;
}

.paper-card-header span {
  font-size: 12px;
  color: var(--text-muted);
}

.paper-stats-row {
  display: flex;
  justify-content: space-between;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color-soft);
  border-radius: var(--radius-md);
  padding: 8px 12px;
}

.paper-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.paper-stat-val {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 16px;
}

.paper-stat-lbl {
  font-size: 10px;
  color: var(--text-muted);
}

.paper-progress-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.paper-progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
}

.paper-progress-header strong {
  color: var(--text-primary);
  font-weight: 500;
}

.paper-progress-bar-bg {
  height: 6px;
  background-color: var(--border-color-soft);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.paper-progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* Datatable & Card Styling */
.table-card {
  padding: 0;
  overflow: hidden;
}

.table-header-row {
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.table-header-row h3 {
  font-size: 16px;
}

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

.search-input {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color-strong);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 13px;
  width: 220px;
  transition: var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--color-brand-blue);
}

.sort-select, .filter-select {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color-strong);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.sort-select:focus, .filter-select:focus {
  border-color: var(--border-focus);
}

.table-container {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}

th {
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-weight: 500;
  padding: 14px 24px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-color-soft);
  color: var(--text-primary);
  vertical-align: middle;
}

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

#chapter-stats-table tbody tr {
  cursor: pointer;
}

tr:hover td {
  background-color: var(--bg-sidebar);
}

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

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-strong {
  background-color: var(--color-correct-glow);
  color: var(--color-correct);
  border: 1px solid var(--color-correct);
}

.badge-weak {
  background-color: var(--color-wrong-glow);
  color: var(--color-wrong);
  border: 1px solid var(--color-wrong);
}

.badge-warning {
  background-color: var(--color-partial-glow);
  color: var(--color-yellow-dark);
  border: 1px solid var(--color-brand-yellow-deep);
}

.badge-neutral {
  background-color: var(--bg-sidebar);
  color: var(--text-secondary);
  border: 1px solid var(--border-color-strong);
}

/* Trend Icons */
.trend-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  font-size: 12px;
}

.trend-up {
  color: var(--color-correct);
}

.trend-down {
  color: var(--color-wrong);
}

.trend-stable {
  color: var(--color-yellow-dark);
}

/* Config Practice View Styling (Redesigned Split Screen - 90% wide) */
.practice-setup-container {
  max-width: 90%;
  width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.setup-main-title {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.paper-buttons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 8px;
}

@media (max-width: 1200px) {
  .paper-buttons-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.btn-paper-select {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  text-align: center;
  border-radius: var(--radius-lg);
  cursor: pointer;
  min-height: 60px;
  box-sizing: border-box;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  width: 100%;
  font-family: var(--font-headings);
}

.btn-paper-select:hover {
  border-color: var(--border-color-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-paper-select.active {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
}

.btn-paper-select.active .subject-text {
  color: var(--color-on-primary) !important;
}

.btn-paper-select .subject-text {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  font-family: var(--font-headings);
}

/* Chapters Grid layout */
.chapters-grid-container {
  max-height: 480px;
  overflow-y: auto;
  padding: 4px;
}

.chapters-grid-container::-webkit-scrollbar {
  width: 6px;
}

.chapters-grid-container::-webkit-scrollbar-thumb {
  background-color: var(--border-color-strong);
  border-radius: var(--radius-full);
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 768px) {
  .chapters-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.chapter-selection-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-fast);
  box-sizing: border-box;
  cursor: pointer;
  position: relative;
  font-family: var(--font-body);
  min-width: 0;
}

.chapter-selection-card:hover {
  border-color: var(--border-color-strong);
  box-shadow: var(--shadow-sm);
}

.chapter-selection-card.selected {
  border-color: var(--color-primary);
  background-color: rgba(28, 28, 30, 0.01);
}

.chapter-selection-card.hidden-chapter {
  display: none !important;
}

.btn-circular-sm:hover {
  background-color: var(--bg-sidebar) !important;
  color: var(--text-primary) !important;
  border-color: var(--text-primary) !important;
}

/* Explicit font family bindings to keep the page consistent */
.setup-section-title {
  font-family: var(--font-headings) !important;
}

.btn-stepper, 
.btn-quick-select, 
.btn-link, 
#selected-chapters-count-badge, 
#chapters-search-input, 
#practice-q-count,
.checkbox-label,
.max-badge,
#practice-max-badge {
  font-family: var(--font-body) !important;
}

#start-session-btn {
  font-family: var(--font-headings) !important;
}

.recommended-badge {
  background-color: #e6fcf5;
  border: 1px solid #c3fae8;
  color: #0ca678;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 6px;
  display: inline-block;
  width: fit-content;
  font-family: var(--font-body) !important;
}

.btn-bookmark-toggle:hover {
  background-color: var(--bg-sidebar);
}

.btn-bookmark-toggle.bookmarked {
  color: #fcb900 !important; /* Canary Yellow/Gold */
  text-shadow: 0 0 1px rgba(252, 185, 0, 0.5);
}

.setup-divider {
  border-bottom: 1px solid var(--border-color-soft);
  margin-bottom: 8px;
}

.setup-split-layout {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.setup-left-panel {
  flex: 1;
  min-width: 0;
}

.setup-right-panel {
  width: 340px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.panel-header-row h4 {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
}

.chapters-card {
  background-color: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.config-side-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color-soft);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.config-side-box h5 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 4px 0;
}

.sources-vertical-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.box-divider {
  border-bottom: 1px solid var(--border-color-soft);
  margin: 4px 0;
}

.q-count-stepper-row {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-card);
}

.btn-stepper {
  background-color: var(--bg-sidebar);
  border: none;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 500;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.btn-stepper:hover {
  background-color: var(--border-color-soft);
}

.btn-stepper:active {
  background-color: var(--border-color);
}

.q-count-quick-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-quick-select {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.btn-quick-select:hover {
  border-color: var(--border-color-strong);
  background-color: var(--bg-sidebar);
}

.btn-quick-select.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

.start-btn-row {
  margin-top: 8px;
}

@media (max-width: 1024px) {
  .setup-split-layout {
    flex-direction: column;
    align-items: stretch;
  }
  
  .setup-right-panel {
    width: 100%;
  }
  
  .paper-buttons-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

select, input[type="text"], input[type="number"], textarea {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-body);
  transition: var(--transition-fast);
}

select:focus, input[type="text"]:focus, input[type="number"]:focus, textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--color-brand-blue);
}

.checkbox-group {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color-soft);
  border-radius: var(--radius-lg);
  padding: 16px;
  max-height: 240px;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}

.checkbox-group::-webkit-scrollbar {
  width: 6px;
}

.checkbox-group::-webkit-scrollbar-track {
  background: transparent;
}

.checkbox-group::-webkit-scrollbar-thumb {
  background-color: var(--border-color-strong);
  border-radius: var(--radius-full);
}

.checkbox-group .checkbox-label {
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  width: 100%;
  box-sizing: border-box;
}

.checkbox-group .checkbox-label:hover {
  background-color: var(--bg-sidebar);
}

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--color-brand-blue);
  width: 16px;
  height: 16px;
}

.input-with-max {
  display: flex;
  align-items: center;
  gap: 12px;
}

.input-with-max input {
  width: 100px;
  flex-grow: 0;
}

.max-badge {
  font-size: 13px;
  color: var(--text-muted);
}

/* Practice Session layout */
.practice-session-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.session-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#session-progress-text {
  font-family: var(--font-headings);
  font-weight: 500;
  font-size: 16px;
}

.session-timer-display {
  font-family: var(--font-headings);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-brand-blue);
  background-color: var(--color-teal-light);
  padding: 4px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-brand-teal);
}

.session-progress-bar-bg {
  height: 8px;
  background-color: var(--border-color-soft);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.session-progress-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

/* Question tags */
.question-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tag {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.paper-tag { background-color: var(--color-teal-light); color: var(--color-moss-dark); border: 1px solid var(--color-brand-teal); }
.chapter-tag { background-color: var(--bg-sidebar); color: var(--text-primary); border: 1px solid var(--border-color-strong); }
.source-tag { background-color: var(--color-yellow-light); color: var(--color-yellow-dark); border: 1px solid var(--color-brand-yellow-deep); }
.marks-tag { background-color: var(--color-coral-light); color: var(--color-coral-dark); border: 1px solid var(--color-brand-coral); }

.question-body h3, .answer-body h3 {
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.markdown-rendered {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
}

.markdown-rendered p {
  margin-bottom: 16px;
}

.markdown-rendered p:last-child {
  margin-bottom: 0;
}

.markdown-rendered code {
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-family: monospace;
  font-size: 0.9em;
  color: var(--color-brand-blue);
}

/* Rendered Markdown Tables inside Questions/Answers */
.table-container {
  margin: 20px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-container table {
  width: 100%;
}

.table-container th {
  padding: 10px 16px;
  font-size: 11px;
}

.table-container td {
  padding: 12px 16px;
  font-size: 13px;
}

/* Personal Notes Expander */
.q-notes-expander {
  margin-top: 24px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.q-notes-expander details summary {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  user-select: none;
}

.q-notes-expander details summary:hover {
  color: var(--text-primary);
}

.notes-content-box {
  margin-top: 12px;
}

.notes-content-box textarea {
  resize: vertical;
  min-height: 80px;
}

.notes-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.notes-saved-status {
  font-size: 11px;
  color: var(--text-muted);
}

/* Action Rows & Buttons */
.action-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 24px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #2c2c34;
  color: var(--color-on-primary);
  transform: translateY(-1px);
}

.btn-primary:disabled,
button:disabled,
button[disabled],
.btn-secondary:disabled,
.btn-danger:disabled {
  background-color: var(--border-color) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-color-strong) !important;
  cursor: not-allowed !important;
  box-shadow: none !important;
  opacity: 0.75 !important;
  transform: none !important;
}

button:disabled *,
button[disabled] * {
  color: inherit !important;
}

.btn-primary.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-color-strong);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--bg-sidebar);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-brand-blue);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.btn-text:hover {
  text-decoration: underline;
}

.btn-text:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  text-decoration: none;
}

.btn-danger {
  background-color: transparent;
  color: var(--color-wrong);
  border: 1px solid var(--color-wrong);
  padding: 10px 20px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-danger:hover {
  background-color: var(--color-wrong);
  color: #fff;
}

.inline-flex {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* Grading Section Layout */
.grading-section {
  margin-top: 32px;
  border-top: 1px dashed var(--border-color);
  padding-top: 24px;
}

.grading-section h4 {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 4px;
}

.grading-instruction {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.grading-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.btn-grade {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0.65;
  font-family: var(--font-headings);
}

.btn-grade.wrong {
  background-color: var(--color-wrong-glow);
  border: 1.5px solid #F3C6C7;
  color: var(--color-wrong);
}

.btn-grade.partial {
  background-color: var(--color-partial-glow);
  border: 1.5px solid #F0D9AE;
  color: #96690F;
}

.btn-grade.correct {
  background-color: var(--color-correct-glow);
  border: 1.5px solid #C9E9D4;
  color: var(--color-correct);
}

.btn-grade:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.btn-grade.wrong.selected {
  background-color: var(--color-wrong);
  border-color: var(--color-wrong);
  color: #ffffff;
  opacity: 1;
  box-shadow: 0 4px 12px rgba(229, 72, 77, 0.2);
}

.btn-grade.partial.selected {
  background-color: var(--color-partial);
  border-color: var(--color-partial);
  color: #1C1E26;
  opacity: 1;
  box-shadow: 0 4px 12px rgba(232, 163, 61, 0.2);
}

.btn-grade.correct.selected {
  background-color: var(--color-correct);
  border-color: var(--color-correct);
  color: #ffffff;
  opacity: 1;
  box-shadow: 0 4px 12px rgba(47, 158, 92, 0.2);
}

.grade-icon {
  font-size: 20px;
  font-weight: 600;
}

.grade-label {
  font-family: var(--font-headings);
  font-weight: 500;
  font-size: 14px;
}

.grading-comment-group {
  margin-bottom: 24px;
}

/* Practice Summary Card layout */
.summary-celebration {
  text-align: center;
  margin-bottom: 32px;
}

.celebration-icon {
  font-size: 60px;
  display: block;
  margin-bottom: 12px;
}

.summary-celebration h3 {
  font-size: 22px;
  margin-bottom: 6px;
}

.summary-celebration p {
  color: var(--text-secondary);
  font-size: 14px;
}

.summary-stats-row {
  display: flex;
  justify-content: space-around;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-bottom: 32px;
}

.summary-stat-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.summary-stat-val {
  font-family: var(--font-headings);
  font-size: 28px;
  font-weight: 500;
}

.summary-stat-lbl {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.text-green { color: var(--color-correct); }
.text-yellow { color: var(--color-yellow-dark); }
.text-red { color: var(--color-wrong); }

/* Toolbar for Question Bank */
.qbank-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 20px;
}

.filter-controls {
  display: flex;
  gap: 12px;
  flex-grow: 1;
}

/* Settings and Data View */
.settings-card {
  margin-bottom: 24px;
}

.settings-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.settings-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.settings-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.action-box {
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.action-box h4 {
  font-size: 15px;
  font-weight: 500;
}

.action-box p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
  flex-grow: 1;
}

.file-upload-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.file-upload-group input[type="file"] {
  font-size: 12px;
  color: var(--text-secondary);
}

.developer-tools-row {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.diagnostics-log {
  margin-top: 20px;
  background-color: var(--color-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: monospace;
  font-size: 12px;
  color: var(--color-brand-yellow);
  max-height: 250px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* Modals Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(5, 0, 56, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  animation: modalSlideIn var(--transition-normal);
}

@keyframes modalSlideIn {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 500;
}

.close-modal-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

.close-modal-btn:hover {
  color: var(--text-primary);
}

.modal-scroll-body {
  padding: 24px;
  overflow-y: auto;
  flex-grow: 1;
}

.modal-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.form-row {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.form-row .flex-1 {
  flex-grow: 1;
}

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

.required {
  color: var(--color-wrong);
}

.hidden {
  display: none !important;
}

.placeholder-text {
  color: var(--text-muted);
  font-size: 13px;
  font-style: italic;
  grid-column: 1 / -1;
}

@media (max-width: 600px) {
  .checkbox-group {
    grid-template-columns: 1fr;
  }
}

/* Needs Attention and Attention Items */
.needs-attention-card {
  display: flex;
  flex-direction: column;
}

.needs-attention-card h3 {
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 500;
  font-family: var(--font-headings);
}

.attn-item {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-size: 13px;
}
.attn-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}
.attn-name {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}
.attn-pct {
  font-weight: 700;
}
.attn-pct.low {
  color: var(--color-wrong);
}
.attn-pct.mid {
  color: var(--color-partial);
}
.bar-track {
  height: 5px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
}
.bar-fill.low {
  background-color: var(--color-wrong);
}
.bar-fill.mid {
  background-color: var(--color-partial);
}

#start-session-btn:not(:disabled),
#mcq-start-session-btn:not(:disabled),
#mcq-verify-answer-btn:not(:disabled) {
  background-color: var(--color-brand-flame) !important;
  color: #ffffff !important;
  font-family: var(--font-headings) !important;
}

#start-session-btn:hover:not(:disabled),
#mcq-start-session-btn:hover:not(:disabled),
#mcq-verify-answer-btn:hover:not(:disabled) {
  background-color: var(--color-brand-yellow-deep) !important;
  transform: translateY(-1px);
}

/* Practice MCQs Custom Components */
.mcq-options-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
  margin-bottom: 24px;
}

.mcq-option-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  background-color: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  position: relative;
}

.mcq-option-card:hover:not(.disabled) {
  border-color: var(--color-brand-flame);
  background-color: var(--color-brand-ember);
}

.mcq-option-card.selected {
  border-color: var(--color-brand-flame);
  background-color: var(--color-brand-ember);
  box-shadow: 0 0 0 1px var(--color-brand-flame);
}

.mcq-option-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color-strong);
  font-family: var(--font-headings);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.mcq-option-card.selected .mcq-option-badge {
  background-color: var(--color-brand-flame);
  color: #ffffff;
  border-color: var(--color-brand-flame);
}

.mcq-option-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  flex-grow: 1;
  padding-top: 3px;
}

.mcq-option-status-icon {
  font-size: 16px;
  font-weight: bold;
  margin-left: auto;
  align-self: center;
}

/* Post verification states */
.mcq-option-card.disabled {
  cursor: default;
}

.mcq-option-card.correct {
  border-color: var(--color-correct) !important;
  background-color: var(--color-correct-glow) !important;
}

.mcq-option-card.correct .mcq-option-badge {
  background-color: var(--color-correct) !important;
  color: #ffffff !important;
  border-color: var(--color-correct) !important;
}

.mcq-option-card.wrong {
  border-color: var(--color-wrong) !important;
  background-color: var(--color-wrong-glow) !important;
}

.mcq-option-card.wrong .mcq-option-badge {
  background-color: var(--color-wrong) !important;
  color: #ffffff !important;
  border-color: var(--color-wrong) !important;
}

.mcq-explanation-card {
  margin-top: 20px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background-color: #F8FAF9;
  border: 1px solid #D1E7DD;
}

.mcq-explanation-card h4 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-correct);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Dashboard Mode Selector Buttons */
.btn-mode-select {
  padding: 6px 18px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-mode-select:hover {
  color: var(--text-primary);
  background-color: rgba(0, 0, 0, 0.04);
}

.btn-mode-select.active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}

/* ====================================================================
   AUTH GATE & MULTI-USER STYLING
   ==================================================================== */

.auth-gate-wrapper {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0D1117 0%, #161B22 50%, #0D1117 100%);
  z-index: 99999;
  padding: 20px;
  overflow-y: auto;
}

.auth-gate-wrapper.hidden {
  display: none !important;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  padding: 32px;
  animation: authCardFadeIn 0.3s ease-out;
}

@keyframes authCardFadeIn {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-logo h1 {
  font-family: var(--font-headings);
  font-size: 32px;
  margin: 0 0 6px 0;
  letter-spacing: -0.5px;
}

.auth-subtitle {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-tabs {
  display: flex;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 4px;
  gap: 4px;
  margin-bottom: 20px;
}

.auth-tab-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.auth-tab-btn:hover {
  color: var(--text-primary);
}

.auth-tab-btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}

.auth-alert {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  margin-bottom: 16px;
  line-height: 1.4;
  animation: authCardFadeIn 0.2s ease-out;
}

.auth-alert.error {
  background-color: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FCA5A5;
}

.auth-alert.success {
  background-color: #DCFCE7;
  color: #166534;
  border: 1px solid #86EFAC;
}

.auth-config-notice {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 12px;
  background-color: #FEF3C7;
  color: #92400E;
  border: 1px solid #FCD34D;
  margin-bottom: 16px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-form.hidden {
  display: none !important;
}

.auth-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.auth-form label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.auth-form .form-input {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-main);
  color: var(--text-primary);
  font-size: 14px;
  transition: all var(--transition-fast);
  width: 100%;
  box-sizing: border-box;
}

.auth-form .form-input:focus {
  outline: none;
  border-color: var(--color-brand-flame);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

.auth-submit-btn {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-top: 8px;
  cursor: pointer;
}

.auth-hint {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 8px 0;
  line-height: 1.5;
}

/* Google 1-Click Sign-In */
.auth-google-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 0;
}

.btn-google-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  max-width: 320px;
  padding: 13px 24px;
  background-color: #FFFFFF;
  color: #1F2937;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid #D1D5DB;
  border-radius: var(--radius-full);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.btn-google-login:hover {
  background-color: #F9FAFB;
  border-color: #9CA3AF;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.btn-google-login:active {
  transform: translateY(0);
  background-color: #F3F4F6;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-google-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-google-login .google-icon {
  flex-shrink: 0;
}

/* User Header Profile & Dropdown */
.user-profile {
  position: relative;
  cursor: pointer;
  user-select: none;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 12px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  animation: authCardFadeIn 0.15s ease-out;
}

.user-dropdown.hidden {
  display: none !important;
}

.user-dropdown-header {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color-soft);
}

.dropdown-email {
  font-size: 12px;
  color: var(--text-secondary);
  word-break: break-all;
  display: block;
  margin-bottom: 4px;
}

.badge-role {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.badge-role.student {
  background-color: rgba(59, 130, 246, 0.15);
  color: #3B82F6;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-role.admin {
  background-color: rgba(249, 115, 22, 0.15);
  color: var(--color-brand-flame);
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--bg-hover);
}

.dropdown-item.logout-btn {
  color: var(--color-wrong);
}

.dropdown-item.logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* Role-based permissions */
.role-student [data-admin-only="true"] {
  display: none !important;
}