:root {
  --mc-bg: #f6f8fb;
  --mc-surface: #ffffff;
  --mc-surface-soft: #f8fafc;
  --mc-surface-hover: #f3f6fa;
  --mc-text-primary: #152033;
  --mc-text-secondary: #5f6f86;
  --mc-text-tertiary: #91a0b3;
  --mc-accent: #2563eb;
  --mc-accent-hover: #1d4ed8;
  --mc-accent-strong: #123f9f;
  --mc-accent-light: #eaf1ff;
  --mc-primary: var(--mc-accent);
  --mc-danger: #dc2626;
  --mc-success: #16a34a;
  --mc-warning: #d97706;
  
  --mc-border: rgba(21, 32, 51, 0.10);
  --mc-border-hover: rgba(21, 32, 51, 0.18);
  --mc-glass-bg: rgba(255, 255, 255, 0.82);
  --mc-glass-border: rgba(255, 255, 255, 0.72);
  
  --mc-shadow-sm: 0 1px 2px rgba(21, 32, 51, 0.04), 0 1px 8px rgba(21, 32, 51, 0.04);
  --mc-shadow-md: 0 8px 24px rgba(21, 32, 51, 0.08);
  --mc-shadow-lg: 0 18px 46px rgba(21, 32, 51, 0.12);
  --mc-shadow-xl: 0 28px 70px rgba(21, 32, 51, 0.16);
  
  --mc-radius-sm: 8px;
  --mc-radius-md: 12px;
  --mc-radius-lg: 18px;
  --mc-radius-full: 9999px;
  
  --mc-nav-height: 64px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--mc-bg);
  color: var(--mc-text-primary);
  line-height: 1.5;
}

.mc-body {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.88), rgba(246,248,251,0.96)),
    radial-gradient(circle at 8% 12%, rgba(37, 99, 235, 0.08), transparent 28%),
    radial-gradient(circle at 86% 18%, rgba(22, 163, 74, 0.06), transparent 26%),
    repeating-linear-gradient(90deg, rgba(37,99,235,0.025) 0 1px, transparent 1px 96px);
  background-attachment: fixed;
}

.mc-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em 0;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--mc-text-primary);
}

.mc-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
}

.mc-title-sm {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 750;
  letter-spacing: 0;
}

.mc-sub {
  font-size: 17px;
  color: var(--mc-text-secondary);
  font-weight: 400;
  letter-spacing: 0;
}

.mc-kicker {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0;
  color: var(--mc-accent);
  margin-bottom: 8px;
}

/* Layouts */
.mc-page {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--mc-nav-height) + 36px) 24px 64px;
}

.mc-grid-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* Nav/Topbar */
.mc-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.mc-floating-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  background: var(--mc-glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--mc-glass-border);
  border-radius: var(--mc-radius-full);
  box-shadow: var(--mc-shadow-md);
}

/* Components */
.mc-glass {
  background: var(--mc-glass-bg);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border: 1px solid var(--mc-glass-border);
  border-radius: var(--mc-radius-lg);
  box-shadow: var(--mc-shadow-xl);
}

.mc-auth-card {
  width: 100%;
  max-width: 420px;
  padding: 44px;
  background: var(--mc-glass-bg) !important;
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.8) !important;
}

.mc-card {
  background: var(--mc-surface);
  border-radius: var(--mc-radius-lg);
  padding: 32px;
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

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

/* Forms & Inputs */
.mc-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mc-label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--mc-text-secondary);
  transition: color 0.3s ease;
}

.mc-input, .mc-textarea, .mc-select {
  width: 100%;
  padding: 16px 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--mc-text-primary);
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius-md);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
}

.mc-input:hover, .mc-textarea:hover, .mc-select:hover {
  background: #fff;
}

.mc-input:focus, .mc-textarea:focus, .mc-select:focus {
  background: var(--mc-surface);
  border-color: var(--mc-accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
}

.mc-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Buttons */
.mc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 12px;
  border: 1px solid var(--mc-border);
  background: var(--mc-surface);
  color: var(--mc-text-primary);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--mc-shadow-sm);
  overflow: hidden;
  position: relative;
}

.mc-btn:active {
  transform: scale(0.97);
}

.mc-btn:hover {
  background: var(--mc-surface-hover);
  border-color: var(--mc-border-hover);
  box-shadow: var(--mc-shadow-md);
}

.mc-btn-primary {
  background: linear-gradient(135deg, var(--mc-accent) 0%, var(--mc-accent-strong) 100%);
  color: #fff;
  border: none;
  box-shadow: 0 10px 22px rgba(37, 99, 235, 0.22);
}

.mc-btn-primary:hover {
  background: linear-gradient(135deg, var(--mc-accent-hover) 0%, #0f358a 100%);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28);
}

.mc-btn-ghost {
  background: transparent;
  border: none;
  color: var(--mc-text-secondary);
}

.mc-btn-ghost:hover {
  background: var(--mc-surface-hover);
  color: var(--mc-text-primary);
}

.mc-btn-pill {
  border-radius: var(--mc-radius-full);
  padding: 12px 24px;
}

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

/* Bento Grid */
.mc-bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.mc-card.span-2 {
  grid-column: span 12;
}

@media (min-width: 900px) {
  .mc-card.span-2 {
    grid-column: span 8;
  }
  .mc-card:not(.span-2) {
    grid-column: span 4;
  }
}

/* Badges / Pills */
.mc-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0;
  background: rgba(0, 0, 0, 0.05);
  color: var(--mc-text-secondary);
  border-radius: var(--mc-radius-full);
}

/* Tables */
.mc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.mc-table th, .mc-table td {
  padding: 16px 12px;
  text-align: left;
  border-bottom: 1px solid var(--mc-border);
}

.mc-table th {
  font-weight: 600;
  color: var(--mc-text-secondary);
  background: var(--mc-surface-soft);
}

.mc-table tbody tr {
  transition: background 0.16s ease;
}

.mc-table tbody tr:hover {
  background: rgba(37, 99, 235, 0.035);
}

/* Alerts */
.mc-alert {
  padding: 16px;
  background: rgba(220, 38, 38, 0.09);
  color: var(--mc-danger);
  border-radius: var(--mc-radius-sm);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
}

/* Sudoku / Testing Grids */
.mc-sudoku {
  display: grid;
  grid-template-columns: repeat(9, 44px);
  gap: 4px;
  width: max-content;
  margin: 24px auto;
  padding: 12px;
  background: rgba(0,0,0,0.02);
  border-radius: var(--mc-radius-md);
}

.mc-cell {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--mc-surface);
  border-radius: 8px;
  border: 1px solid var(--mc-border);
  font-weight: 600;
  font-size: 18px;
  box-shadow: var(--mc-shadow-sm);
}

.mc-cell.hl {
  background: rgba(0, 113, 227, 0.1);
  border-color: var(--mc-accent);
  color: var(--mc-accent);
}

.mc-cell input {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  text-align: center;
  font-weight: 700;
  font-size: 18px;
  outline: none;
}

/* Iframes */
.mc-iframe-shell {
  width: 100%;
  height: 600px;
  border-radius: var(--mc-radius-md);
  border: 1px solid var(--mc-border);
  overflow: hidden;
  box-shadow: var(--mc-shadow-md);
}
.mc-iframe-shell iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Utilities */
.mc-split {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .mc-split-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.mc-muted {
  color: var(--mc-text-secondary);
}

/* Logo */
.mc-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.mc-logo {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(22, 163, 74, 0.08) 100%);
  border-radius: 14px;
  border: 1px solid rgba(37, 99, 235, 0.20);
  box-shadow: inset 0 2px 4px rgba(255,255,255,0.7), 0 8px 18px rgba(37, 99, 235, 0.14);
  font-size: 20px;
  font-weight: 800;
  color: var(--mc-accent);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.mc-logo:hover {
  transform: translateY(-1px);
  box-shadow: inset 0 2px 4px rgba(255,255,255,0.7), 0 12px 24px rgba(37, 99, 235, 0.20);
}

/* (3D Scoreboard styles moved to scoreboard.css) */

.mc-admin-nav {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

/* Protect */
.mc-protect, .mc-protect * {
  -webkit-user-select: none;
  user-select: none;
}

.mc-test-header {
  text-align: center;
  margin-bottom: 34px;
}

.mc-center-card {
  max-width: 720px;
  margin: 90px auto 0;
  text-align: center;
}

.mc-lobby-page {
  max-width: 1180px;
}

.mc-relay-meter {
  width: min(460px, 100%);
  height: 8px;
  margin: 18px auto 0;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(29,29,31,0.08);
}

.mc-relay-meter span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #1f73e8, #17a65b, #e0444d);
  transition: width 0.35s ease;
}

.mc-task-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.mc-task-card {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.68);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 12px 34px rgba(18,38,63,0.09);
  transition: transform 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}

.mc-task-card h2 {
  font-size: 22px;
  margin: 16px 0 8px;
}

.mc-task-card.mc-task-available {
  cursor: pointer;
  border-color: rgba(31,115,232,0.26);
}

.mc-task-card.mc-task-available:hover {
  transform: translateY(-2px);
  border-color: rgba(31,115,232,0.46);
}

.mc-task-card.mc-task-in_progress {
  cursor: pointer;
  border-color: rgba(245,184,75,0.56);
  box-shadow: 0 14px 38px rgba(245,184,75,0.14);
}

.mc-task-card.mc-task-completed {
  opacity: 0.58;
  background: rgba(246,249,252,0.68);
}

.mc-task-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
  color: var(--mc-text-secondary);
}

.mc-state-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(29,29,31,0.06);
  color: var(--mc-text-secondary);
}

.mc-task-in_progress .mc-state-badge {
  background: rgba(245,184,75,0.16);
  color: #9b650e;
}

.mc-task-in_progress .mc-state-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #f5b84b;
}

.mc-task-completed .mc-state-badge {
  background: rgba(23,166,91,0.14);
  color: #127a45;
}

.mc-pill-success {
  background: rgba(23,166,91,0.12);
  color: #127a45;
}

.mc-task-host {
  display: grid;
  gap: 24px;
}

.mc-question-card.mc-question-done {
  border-color: rgba(23,166,91,0.3);
  background: rgba(247,252,249,0.96);
}

.mc-test-option {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  margin-bottom: 12px;
  border: 1px solid var(--mc-border);
  border-radius: 16px;
  background: var(--mc-surface);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 16px;
  font-weight: 500;
  color: var(--mc-text-secondary);
  box-shadow: var(--mc-shadow-sm);
}

.mc-test-option:hover {
  background: var(--mc-surface-hover);
  border-color: var(--mc-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--mc-shadow-md);
}

.mc-test-option input[type="radio"] {
  display: none;
}

.mc-opt-indicator {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--mc-border-hover);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  background: var(--mc-bg);
}

.mc-opt-indicator svg {
  width: 14px;
  height: 14px;
  color: #fff;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s ease;
}

.mc-test-option input[type="radio"]:checked ~ .mc-opt-indicator {
  background: var(--mc-accent);
  border-color: var(--mc-accent);
}

.mc-test-option input[type="radio"]:checked ~ .mc-opt-indicator svg {
  opacity: 1;
  transform: scale(1);
}

.mc-test-option input[type="radio"]:checked ~ span {
  color: var(--mc-text-primary);
  font-weight: 600;
}

.mc-test-option:has(input[type="radio"]:checked) {
  background: var(--mc-accent-light);
  border-color: var(--mc-accent);
}

/* Code Snippet Emulation */
.mc-code-snippet {
  background: #282c34;
  color: #abb2bf;
  border-radius: 12px;
  padding: 16px 24px 24px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.6;
  margin: 16px 0 24px;
  overflow-x: auto;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.mc-code-header {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.mc-code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.mc-code-dot.red { background: #ff5f56; }
.mc-code-dot.yellow { background: #ffbd2e; }
.mc-code-dot.green { background: #27c93f; }

.mc-task-finish {
  border-color: rgba(31,115,232,0.18);
}

.mc-external-unlock {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto minmax(120px, 180px) auto;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.mc-external-unlock[hidden] {
  display: none;
}

.mc-control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 18px;
  align-items: stretch;
}

.mc-control-card {
  border-radius: 8px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mc-control-card:hover {
  transform: none;
}

.mc-control-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.mc-control-head h2 {
  font-size: 22px;
  margin: 0;
}

.mc-control-actions,
.mc-control-form {
  display: grid;
  gap: 12px;
}

.mc-control-actions {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: auto;
}

.mc-control-card > .mc-btn {
  margin-top: auto;
}

.mc-danger-zone {
  border-color: rgba(220, 38, 38, 0.18);
  background: linear-gradient(180deg, #fff, rgba(254, 242, 242, 0.58));
}

.mc-control-toast {
  position: sticky;
  bottom: 18px;
  width: fit-content;
  max-width: min(680px, 100%);
  min-height: 0;
  margin: 18px 0 0;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--mc-text-primary);
  color: #fff;
  box-shadow: var(--mc-shadow-lg);
  font-size: 14px;
  font-weight: 700;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.mc-control-toast:not(:empty) {
  opacity: 1;
  transform: translateY(0);
}

.mc-submission-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.mc-submission-stats article {
  padding: 18px;
  border-radius: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-sm);
}

.mc-submission-stats span {
  display: block;
  color: var(--mc-text-secondary);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.mc-submission-stats strong {
  display: block;
  margin-top: 8px;
  color: var(--mc-text-primary);
  font-size: 30px;
  line-height: 1;
}

.mc-submission-filter-card {
  margin-bottom: 18px;
  border-radius: 8px;
}

.mc-submission-filters {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(220px, 1.6fr) auto;
  gap: 14px;
  align-items: end;
}

.mc-submission-list {
  display: grid;
  gap: 14px;
}

.mc-submission-item {
  padding: 20px;
  border-radius: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-sm);
}

.mc-submission-main {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--mc-border);
}

.mc-submission-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.mc-submission-title strong {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--mc-accent-light);
  color: var(--mc-accent-strong);
  font-size: 13px;
}

.mc-submission-title span {
  color: var(--mc-text-primary);
  font-weight: 750;
}

.mc-submission-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.mc-submission-meta span {
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--mc-surface-soft);
  color: var(--mc-text-secondary);
  font-size: 12px;
  font-weight: 700;
}

.mc-submission-score {
  min-width: 110px;
  text-align: right;
}

.mc-submission-score span {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.mc-submission-score span.ok {
  background: rgba(22, 163, 74, 0.12);
  color: #127a45;
}

.mc-submission-score span.bad {
  background: rgba(220, 38, 38, 0.10);
  color: var(--mc-danger);
}

.mc-submission-score strong {
  display: block;
  margin-top: 8px;
  font-size: 20px;
}

.mc-submission-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

.mc-submission-answers > div {
  min-width: 0;
  padding: 16px;
  border-radius: 8px;
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
}

.mc-submission-answers h3 {
  margin: 0 0 8px;
  color: var(--mc-text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.mc-submission-answers p {
  margin: 0;
  color: var(--mc-text-primary);
  overflow-wrap: anywhere;
}

.mc-ai-details {
  margin-top: 14px;
  padding: 14px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid var(--mc-border);
}

.mc-ai-details summary {
  cursor: pointer;
  color: var(--mc-accent-strong);
  font-weight: 800;
}

.mc-ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 14px 0;
}

.mc-ai-grid div {
  padding: 12px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--mc-border);
}

.mc-ai-grid span {
  display: block;
  color: var(--mc-text-secondary);
  font-size: 12px;
  font-weight: 800;
}

.mc-ai-grid strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
}

.mc-ai-details pre {
  max-height: 260px;
  overflow: auto;
  margin: 0;
  padding: 14px;
  border-radius: 8px;
  background: #111827;
  color: #e5e7eb;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}


@media (max-width: 760px) {
  .mc-external-unlock {
    grid-template-columns: 1fr;
  }
  .mc-task-card {
    min-height: 190px;
  }
}

/* Admin Sidebar Layout */
.mc-admin-layout {
  display: flex;
  min-height: 100vh;
  background: var(--mc-bg);
}

.mc-sidebar {
  width: 264px;
  background: var(--mc-surface);
  border-right: 1px solid var(--mc-border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  top: 0;
  left: 0;
  z-index: 100;
}

.mc-sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--mc-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  border-radius: 10px;
  margin-bottom: 4px;
  transition: all 0.2s ease;
}

.mc-sidebar-link:hover, .mc-sidebar-link.active {
  background: var(--mc-surface-hover);
  color: var(--mc-text-primary);
}

.mc-sidebar-link.active {
  font-weight: 600;
  background: var(--mc-accent-light);
  color: var(--mc-accent-strong);
}

.mc-admin-main {
  flex: 1;
  margin-left: 264px;
  padding: 32px 48px;
}

.mc-admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--mc-border);
}

.mc-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
}

.mc-empty-state {
  padding: 34px;
  text-align: center;
  color: var(--mc-text-secondary);
  background: var(--mc-surface-soft);
  border: 1px dashed var(--mc-border-hover);
  border-radius: 12px;
}

@media (max-width: 920px) {
  .mc-page {
    padding: calc(var(--mc-nav-height) + 26px) 16px 44px;
  }

  .mc-floating-nav {
    width: calc(100% - 24px);
    justify-content: center;
    overflow-x: auto;
  }

  .mc-card,
  .mc-auth-card {
    padding: 24px;
  }

  .mc-admin-layout {
    display: block;
  }

  .mc-sidebar {
    position: sticky;
    top: 0;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--mc-border);
    padding: 12px;
  }

  .mc-sidebar nav {
    flex-direction: row !important;
    min-width: max-content;
  }

  .mc-sidebar-brand,
  .mc-sidebar > div:last-child {
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    min-width: max-content;
  }

  .mc-admin-main {
    margin-left: 0;
    padding: 24px 16px;
  }

  .mc-admin-header {
    align-items: flex-start;
    gap: 16px;
    flex-direction: column;
  }

  .mc-control-grid {
    grid-template-columns: 1fr;
  }

  .mc-control-actions {
    grid-template-columns: 1fr;
  }

  .mc-submission-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .mc-submission-filters,
  .mc-submission-answers,
  .mc-ai-grid {
    grid-template-columns: 1fr;
  }

  .mc-submission-main {
    flex-direction: column;
  }

  .mc-submission-score {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .mc-grid-center {
    align-items: stretch;
    padding: 16px;
  }

  .mc-auth-card {
    margin: auto 0;
  }

  .mc-sudoku {
    grid-template-columns: repeat(9, minmax(28px, 1fr));
    width: 100%;
  }

  .mc-cell {
    width: auto;
    height: auto;
    aspect-ratio: 1;
    font-size: 15px;
  }

  .mc-test-option {
    padding: 14px 16px;
  }
}

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

.mc-secure-document,
.mc-secure-document body {
  overscroll-behavior: none;
}

.mc-secure-document * {
  -webkit-user-select: none;
  user-select: none;
}

.mc-secure-document textarea,
.mc-secure-document input {
  -webkit-user-select: text;
  user-select: text;
}

.mc-ui-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.mc-student-panel,
.mc-exam-surface {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}

.mc-student-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 30px 0 16px;
  border-bottom: 1px solid var(--mc-border);
}

.mc-student-hero h1,
.mc-exam-header h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.02;
  font-weight: 800;
  margin: 0 0 10px;
}

.mc-student-hero p {
  max-width: 620px;
  margin: 0;
  color: var(--mc-text-secondary);
  font-size: 17px;
}

.mc-progress-ring {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    linear-gradient(#fff, #fff) padding-box,
    conic-gradient(var(--mc-accent), var(--mc-success), var(--mc-accent)) border-box;
  border: 8px solid transparent;
  box-shadow: var(--mc-shadow-md);
}

.mc-progress-ring strong {
  display: block;
  font-size: 30px;
  line-height: 1;
}

.mc-progress-ring span {
  display: block;
  margin-top: 6px;
  color: var(--mc-text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-weight: 700;
}

.mc-secure-task {
  min-height: 224px;
  padding: 26px;
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,250,252,0.94));
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.mc-secure-task:not(.mc-task-completed):hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: var(--mc-shadow-md);
}

.mc-secure-task h2 {
  font-size: 22px;
  line-height: 1.18;
  margin: 18px 0 10px;
}

.mc-secure-task p {
  color: var(--mc-text-secondary);
  margin: 0 0 22px;
}

.mc-task-completed {
  opacity: 0.64;
}

.mc-task-available .mc-state-badge {
  background: rgba(37, 99, 235, 0.10);
  color: var(--mc-accent-strong);
}

.mc-task-completed .mc-state-badge {
  background: rgba(22, 163, 74, 0.12);
  color: #127a45;
}

.mc-exam-center {
  min-height: 70vh;
  display: grid;
  place-items: center;
}

.mc-exam-notice {
  width: min(560px, 100%);
  padding: 42px;
  text-align: center;
  border-radius: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-lg);
}

.mc-exam-notice-icon {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  color: var(--mc-success);
  background: rgba(22, 163, 74, 0.12);
}

.mc-exam-notice-icon.danger {
  color: var(--mc-danger);
  background: rgba(220, 38, 38, 0.11);
}

.mc-exam-notice h1 {
  font-size: 30px;
  margin-bottom: 12px;
}

.mc-exam-notice p {
  color: var(--mc-text-secondary);
  margin: 0 0 28px;
}

.mc-fullscreen-gate {
  display: grid;
  justify-items: center;
  gap: 12px;
}

.mc-fullscreen-gate .mc-btn {
  width: min(320px, 100%);
}

.mc-exam-surface {
  padding: 22px 0 48px;
}

.mc-exam-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(260px, 380px);
  gap: 20px;
  align-items: center;
  padding: 18px 22px;
  margin-bottom: 22px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px) saturate(170%);
  box-shadow: var(--mc-shadow-md);
}

.mc-exam-header h1 {
  font-size: clamp(22px, 3vw, 34px);
  margin-bottom: 0;
}

.mc-exam-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.mc-exam-meta span {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--mc-surface-soft);
  color: var(--mc-text-secondary);
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
}

.mc-exam-progress span {
  display: block;
  margin-bottom: 8px;
  color: var(--mc-text-secondary);
  font-size: 13px;
  font-weight: 700;
}

.mc-exam-progress div {
  height: 8px;
  border-radius: 999px;
  background: var(--mc-border);
  overflow: hidden;
}

.mc-exam-progress i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mc-accent), var(--mc-success));
  transition: width 0.22s ease;
}

.mc-question-shell {
  min-height: 440px;
}

.mc-question-card,
.mc-memory-stage,
.mc-external-card {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 34px;
  border-radius: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-md);
}

.mc-question-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--mc-text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-weight: 800;
  margin-bottom: 14px;
}

.mc-question-top b {
  color: var(--mc-success);
  text-transform: none;
  font-size: 13px;
}

.mc-question-card h2,
.mc-memory-stage h2,
.mc-external-card h2 {
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.18;
  margin: 0 0 24px;
}

.mc-question-image,
.mc-memory-stage img {
  display: block;
  max-width: 100%;
  max-height: 54vh;
  object-fit: contain;
  margin: 18px auto 24px;
  border-radius: 8px;
  border: 1px solid var(--mc-border);
}

.mc-passage,
.mc-memory-text {
  white-space: pre-wrap;
  padding: 22px;
  margin: 0 0 24px;
  border-radius: 8px;
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
  color: var(--mc-text-primary);
  line-height: 1.7;
}

.mc-memory-stage {
  text-align: center;
}

.mc-memory-stage p {
  color: var(--mc-danger);
  font-weight: 700;
}

.mc-exam-nav {
  width: min(920px, 100%);
  margin: 18px auto 0;
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.mc-finish-btn {
  display: flex;
  width: min(320px, 100%);
  margin: 22px auto 0;
}

.mc-equation-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 0 0 24px;
}

.mc-equation-board > div {
  padding: 20px;
  border-radius: 8px;
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
}

.mc-equation-board h3 {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--mc-text-secondary);
}

.mc-equation-board p {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px solid var(--mc-border);
}

.mc-equation-board p:last-child {
  border-bottom: 0;
}

@media (max-width: 880px) {
  .mc-student-hero,
  .mc-exam-header {
    grid-template-columns: 1fr;
    display: grid;
  }

  .mc-progress-ring {
    width: 118px;
    height: 118px;
  }

  .mc-equation-board {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .mc-student-panel,
  .mc-exam-surface {
    width: min(100% - 20px, 1180px);
  }

  .mc-question-card,
  .mc-memory-stage,
  .mc-external-card,
  .mc-exam-notice {
    padding: 22px;
  }

  .mc-exam-nav {
    flex-direction: column;
  }
}

/* Professional refinement layer */
:root {
  --mc-bg: #f4f7fb;
  --mc-surface-soft: #f7f9fc;
  --mc-text-primary: #111827;
  --mc-text-secondary: #64748b;
  --mc-accent: #1f5fd6;
  --mc-accent-hover: #174db2;
  --mc-accent-strong: #123a86;
  --mc-accent-light: #e8f0ff;
  --mc-border: rgba(15, 23, 42, 0.10);
  --mc-border-hover: rgba(15, 23, 42, 0.18);
  --mc-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 6px 18px rgba(15, 23, 42, 0.04);
  --mc-shadow-md: 0 14px 34px rgba(15, 23, 42, 0.08);
  --mc-shadow-lg: 0 22px 54px rgba(15, 23, 42, 0.12);
}

.mc-body {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(244,247,251,0.98)),
    linear-gradient(90deg, rgba(31,95,214,0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(31,95,214,0.028) 1px, transparent 1px);
  background-size: auto, 96px 96px, 96px 96px;
}

.mc-card,
.mc-auth-card,
.mc-secure-task,
.mc-question-card,
.mc-memory-stage,
.mc-external-card,
.mc-submission-item,
.mc-submission-stats article,
.mc-control-card {
  border-radius: 8px;
}

.mc-card {
  background: rgba(255,255,255,0.94);
}

.mc-card:hover {
  transform: translateY(-1px);
}

.mc-btn {
  min-height: 44px;
  border-radius: 10px;
}

.mc-btn-pill {
  border-radius: 999px;
}

.mc-btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #123a86 100%);
}

.mc-input,
.mc-textarea,
.mc-select {
  border-radius: 10px;
  background: #fbfcfe;
}

.mc-input:focus,
.mc-textarea:focus,
.mc-select:focus {
  box-shadow: 0 0 0 4px rgba(31, 95, 214, 0.13);
}

.mc-sidebar {
  background: rgba(255,255,255,0.96);
  box-shadow: 10px 0 30px rgba(15, 23, 42, 0.03);
}

.mc-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 18px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--mc-border);
}

.mc-sidebar-brand .mc-logo {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  margin: 0;
  border-radius: 10px;
  font-size: 13px;
}

.mc-sidebar-brand strong {
  display: block;
  font-size: 13px;
  line-height: 1.2;
  color: var(--mc-text-primary);
}

.mc-sidebar-brand span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  line-height: 1.2;
  color: var(--mc-text-secondary);
}

.mc-sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mc-sidebar-link {
  min-height: 42px;
  border-radius: 8px;
  margin-bottom: 0;
}

.mc-sidebar-link.active {
  box-shadow: inset 3px 0 0 var(--mc-accent);
}

.mc-sidebar-link.danger {
  color: var(--mc-danger);
}

.mc-sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--mc-border);
}

.mc-admin-main {
  max-width: 1500px;
}

.mc-admin-header {
  background: rgba(255,255,255,0.58);
  border: 1px solid rgba(255,255,255,0.72);
  border-radius: 8px;
  padding: 22px 24px;
  box-shadow: var(--mc-shadow-sm);
}

.mc-table th {
  color: #475569;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.mc-table td {
  vertical-align: top;
}

.mc-student-home-hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 48px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(232,240,255,0.74) 100%),
    linear-gradient(90deg, rgba(31,95,214,0.06) 1px, transparent 1px);
  background-size: auto, 40px 40px;
}

.mc-student-home-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px;
}

.mc-student-panel {
  padding-bottom: 48px;
}

.mc-student-panel-v2 {
  gap: 22px;
}

.mc-student-command {
  min-height: 230px;
}

.mc-student-statusbar {
  display: grid;
  grid-template-columns: auto minmax(180px, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 8px;
  background: rgba(255,255,255,0.76);
  border: 1px solid rgba(255,255,255,0.82);
  box-shadow: var(--mc-shadow-sm);
  color: var(--mc-text-secondary);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.mc-student-statusbar .mc-relay-meter {
  width: 100%;
  margin: 0;
}

.mc-student-statusbar b {
  color: var(--mc-text-primary);
}

.mc-task-grid-v2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.mc-student-hero {
  background: rgba(255,255,255,0.58);
  border: 1px solid rgba(255,255,255,0.78);
  border-radius: 8px;
  padding: 24px;
  margin: 18px 0 16px;
  box-shadow: var(--mc-shadow-sm);
}

.mc-secure-task {
  position: relative;
  overflow: hidden;
}

.mc-secure-task::after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: var(--mc-border);
}

.mc-task-available::after {
  background: var(--mc-accent);
}

.mc-task-in_progress::after {
  background: var(--mc-warning);
}

.mc-task-completed::after {
  background: var(--mc-success);
}

.mc-exam-header,
.mc-exam-notice {
  border-radius: 8px;
}

.mc-external-launch-card {
  display: grid;
  gap: 18px;
}

.mc-external-launch-copy h2 {
  margin-bottom: 10px;
}

.mc-external-url {
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: 8px;
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
}

.mc-external-url span {
  color: var(--mc-text-secondary);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.mc-external-url strong {
  color: var(--mc-text-primary);
  overflow-wrap: anywhere;
  font-size: 14px;
}

.mc-external-blocked-fallback {
  display: grid;
  gap: 16px;
  padding: 24px;
  border-radius: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  box-shadow: var(--mc-shadow-sm);
}

.mc-external-blocked-fallback h2 {
  margin: 0 0 8px;
  font-size: 24px;
}

.mc-external-fallback-url {
  padding: 12px;
  border-radius: 8px;
  background: var(--mc-surface-soft);
  border: 1px solid var(--mc-border);
  overflow-wrap: anywhere;
  font-size: 13px;
  color: var(--mc-text-secondary);
}

.mc-question-card h2 {
  max-width: 68ch;
}

.mc-alert {
  border: 1px solid rgba(220, 38, 38, 0.18);
}

.mc-empty-state {
  border-radius: 8px;
  background: rgba(255,255,255,0.72);
}

.mc-floating-nav {
  border-radius: 999px;
}

@media (max-width: 920px) {
  .mc-admin-header {
    padding: 18px;
  }

  .mc-admin-main {
    max-width: none;
  }

  .mc-student-home-hero,
  .mc-student-home-side {
    padding: 28px;
  }

  .mc-student-statusbar {
    grid-template-columns: 1fr;
  }
}

/* Premium Dark Mode Overrides */
[data-theme="dark"] {
  --mc-bg: #090d16;
  --mc-surface: #121824;
  --mc-surface-soft: #172030;
  --mc-surface-hover: #1e293b;
  --mc-text-primary: #f8fafc;
  --mc-text-secondary: #94a3b8;
  --mc-text-tertiary: #64748b;
  --mc-accent: #3b82f6;
  --mc-accent-hover: #60a5fa;
  --mc-accent-strong: #1d4ed8;
  --mc-accent-light: rgba(59, 130, 246, 0.15);
  --mc-border: rgba(255, 255, 255, 0.08);
  --mc-border-hover: rgba(255, 255, 255, 0.16);
  --mc-glass-bg: rgba(18, 24, 36, 0.75);
  --mc-glass-border: rgba(255, 255, 255, 0.08);
  
  --mc-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.2);
  --mc-shadow-md: 0 14px 34px rgba(0, 0, 0, 0.35);
  --mc-shadow-lg: 0 22px 54px rgba(0, 0, 0, 0.45);
  --mc-shadow-xl: 0 28px 70px rgba(0, 0, 0, 0.55);
}

/* Specific component enhancements under dark theme */
[data-theme="dark"] .mc-body {
  background-image:
    linear-gradient(180deg, rgba(9, 13, 22, 0.95), rgba(9, 13, 22, 0.98)),
    linear-gradient(90deg, rgba(59, 130, 246, 0.02) 1px, transparent 1px),
    linear-gradient(180deg, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
  background-size: auto, 96px 96px, 96px 96px;
}

[data-theme="dark"] .mc-card,
[data-theme="dark"] .mc-auth-card,
[data-theme="dark"] .mc-secure-task,
[data-theme="dark"] .mc-question-card,
[data-theme="dark"] .mc-memory-stage,
[data-theme="dark"] .mc-external-card,
[data-theme="dark"] .mc-submission-item,
[data-theme="dark"] .mc-submission-stats article,
[data-theme="dark"] .mc-control-card {
  background: #121824;
}

[data-theme="dark"] .mc-student-home-hero {
  background:
    linear-gradient(135deg, rgba(18, 24, 36, 0.98) 0%, rgba(13, 25, 48, 0.84) 100%),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: auto, 40px 40px;
}

[data-theme="dark"] .mc-sidebar {
  background: rgba(18, 24, 36, 0.96);
  box-shadow: 10px 0 30px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .mc-sidebar-link:hover, 
[data-theme="dark"] .mc-sidebar-link.active {
  background: #1e293b;
  color: #fff;
}

[data-theme="dark"] .mc-sidebar-link.active {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

[data-theme="dark"] .mc-admin-header {
  background: rgba(18, 24, 36, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .mc-table th {
  color: #94a3b8;
  background: #172030;
}

[data-theme="dark"] .mc-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.06);
}

[data-theme="dark"] .mc-input,
[data-theme="dark"] .mc-textarea,
[data-theme="dark"] .mc-select {
  background: #0f131c;
  color: #f8fafc;
}

[data-theme="dark"] .mc-input:hover,
[data-theme="dark"] .mc-textarea:hover,
[data-theme="dark"] .mc-select:hover {
  background: #121824;
}

[data-theme="dark"] .mc-input:focus,
[data-theme="dark"] .mc-textarea:focus,
[data-theme="dark"] .mc-select:focus {
  background: #121824;
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .mc-btn {
  background: #1e293b;
  color: #f8fafc;
  border-color: rgba(255,255,255,0.08);
}

[data-theme="dark"] .mc-btn:hover {
  background: #334155;
  border-color: rgba(255,255,255,0.15);
}

[data-theme="dark"] .mc-btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: #fff;
  border: none;
}

[data-theme="dark"] .mc-btn-primary:hover {
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
}

[data-theme="dark"] .mc-ai-details {
  background: #172030;
}

[data-theme="dark"] .mc-ai-grid div {
  background: #121824;
}

[data-theme="dark"] .mc-student-statusbar {
  background: rgba(18, 24, 36, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .mc-exam-header {
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(18, 24, 36, 0.85);
}

[data-theme="dark"] .mc-cell {
  background: #1e293b;
}

[data-theme="dark"] .mc-cell input {
  color: #fff;
}

[data-theme="dark"] .mc-cell.hl {
  background: rgba(59, 130, 246, 0.2);
  border-color: #3b82f6;
  color: #60a5fa;
}

[data-theme="dark"] .mc-test-option {
  background: #121824;
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .mc-test-option:hover {
  background: #1e293b;
}

[data-theme="dark"] .mc-test-option:has(input[type="radio"]:checked) {
  background: rgba(59, 130, 246, 0.15);
  border-color: #3b82f6;
}

[data-theme="dark"] .mc-logo {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.16) 0%, rgba(16, 185, 129, 0.12) 100%);
  border-color: rgba(59, 130, 246, 0.25);
  color: #60a5fa;
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.05), 0 8px 18px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .mc-logo:hover {
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.05), 0 12px 24px rgba(0, 0, 0, 0.4);
}

/* Global variable smooth transitions */
html, body, .mc-body, .mc-card, .mc-auth-card, .mc-secure-task, .mc-question-card, .mc-memory-stage, .mc-external-card, .mc-submission-item, .mc-submission-stats article, .mc-control-card, .mc-student-home-hero, .mc-sidebar, .mc-sidebar-link, .mc-admin-header, .mc-table th, .mc-table td, .mc-table tbody tr, .mc-input, .mc-textarea, .mc-select, .mc-btn, .mc-ai-details, .mc-ai-grid div, .mc-student-statusbar, .mc-exam-header, .mc-cell, .mc-test-option {
  transition: background 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              color 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}