:root {
  --background: #f8fafc;
  --foreground: #0f172a;
  --card: #ffffff;
  --card-foreground: #0f172a;
  --muted: #f1f5f9;
  --muted-foreground: #64748b;
  --border: #e2e8f0;
  --input: #e2e8f0;
  --primary: #0b1f5f;
  --primary-foreground: #f8fafc;
  --secondary: #e7edf8;
  --secondary-foreground: #0b1f5f;
  --destructive: #d92c2c;
  --ring: #93c5fd;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(circle at top, #eef4ff 0, var(--background) 35%);
  color: var(--foreground);
}

.container {
  max-width: 1080px;
  margin: 28px auto;
  padding: 24px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid #dbe6f7;
  border-radius: 16px;
  backdrop-filter: blur(8px);
}

.learner-landing {
  max-width: 760px;
}

.hero {
  margin-bottom: 16px;
}

.hero p,
#meta,
#overviewText {
  color: var(--muted-foreground);
}

.exam-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.timer-badge {
  background: #fff;
  border: 1px solid #bfd0f1;
  color: #0b1f5f;
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 700;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.timer-badge.timer-warning {
  border-color: #d4a574;
  color: #6b4520;
  background: #fff8f0;
}

.timer-badge.timer-critical {
  border-color: #e07a66;
  color: #6b1610;
  background: #fff5f4;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.admin-nav,
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 16px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--primary);
  color: var(--primary-foreground);
  padding: 9px 14px;
  text-decoration: none;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: all 120ms ease;
}

.button:hover,
button:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.button:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
}

.button.secondary {
  background: var(--secondary);
  color: var(--secondary-foreground);
  border-color: #b9c8e5;
}

.button.secondary.active,
.button[aria-current="page"] {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: #0a1a50;
}

.button.danger,
.danger {
  background: var(--destructive);
  color: #fff;
}

label {
  display: block;
  margin: 10px 0;
  font-size: 0.95rem;
  color: #1e293b;
}

input,
textarea,
select {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--input);
  border-radius: 10px;
  background: #fff;
  padding: 10px 12px;
  color: var(--foreground);
  font: inherit;
}

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

.card {
  background: var(--card);
  color: var(--card-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 14px 0;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.question-card {
  background: #fbfdff;
}

.question-card .danger {
  margin-top: 10px;
}

.q-image-paste-zone {
  margin: 8px 0 4px;
  padding: 12px 14px;
  border: 1px dashed #b9c8e5;
  border-radius: 10px;
  background: #f8fafc;
  font-size: 0.88rem;
  color: var(--muted-foreground);
  line-height: 1.45;
  outline: none;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease;
}

.q-image-paste-zone:focus-visible {
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px var(--ring);
  background: #fff;
}

.q-image-paste-zone kbd {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.8em;
  font-family: inherit;
}

.q-image-paste-hint {
  display: block;
}

.question-card img,
.card img {
  max-width: 320px;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 8px 0;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--muted);
  font-weight: 600;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}

.option input[type="radio"] {
  width: auto;
  margin: 0;
}

.question-overview {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.question-pill {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid #c4d2ec;
  background: #fff;
  color: #334155;
  font-weight: 600;
  cursor: pointer;
}

.question-pill.open {
  background: #fff;
}

.question-pill.answered {
  background: #dff5e8;
  border-color: #79d39d;
  color: #136c3f;
}

.question-pill.current {
  background: #0b1f5f;
  border-color: #0b1f5f;
  color: #fff;
}

.question-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.option-card {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
  min-height: 48px;
}

.option-card:hover {
  border-color: #b9c8e5;
  background: #fbfdff;
}

.option-card:has(input:focus-visible) {
  box-shadow: 0 0 0 3px var(--ring);
  border-color: #93c5fd;
}

.option-card input[type='radio'] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  pointer-events: none;
}

.option-indicator {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #94a3b8;
  background: #fff;
  display: grid;
  place-items: center;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.option-indicator::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 120ms ease, transform 120ms ease;
}

.option-card:has(input:checked) {
  border-color: #1e3a8a;
  background: linear-gradient(135deg, #f8faff 0%, #fff 100%);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.option-card:has(input:checked) .option-indicator {
  border-color: var(--primary);
  background: #fff;
}

.option-card:has(input:checked) .option-indicator::after {
  opacity: 1;
  transform: scale(1);
}

.option-text {
  flex: 1;
  line-height: 1.45;
  font-size: 0.98rem;
  color: var(--foreground);
}

@supports not selector(:has(*)) {
  .option-card input:checked ~ .option-indicator {
    border-color: var(--primary);
  }

  .option-card input:checked ~ .option-indicator::after {
    opacity: 1;
    transform: scale(1);
  }

  .option-card input:checked ~ .option-text {
    font-weight: 600;
  }
}

.info {
  border-left: 4px solid #3b82f6;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #0b1020;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 12px;
  font-size: 0.85rem;
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

body.app-dialog-open {
  overflow: hidden;
}

.app-dialog-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
    max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background: rgba(15, 23, 42, 0.48);
  backdrop-filter: blur(6px);
}

.app-dialog-backdrop.is-open {
  display: flex;
}

.app-dialog {
  width: min(440px, 100%);
  margin: auto;
  background: var(--card);
  color: var(--card-foreground);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-left-color: var(--primary);
  box-shadow: 0 24px 48px -12px rgba(15, 23, 42, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  padding: 20px 22px 18px;
  animation: app-dialog-enter 160ms ease-out;
}

@keyframes app-dialog-enter {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.app-dialog.app-dialog--success {
  border-left-color: #15803d;
}

.app-dialog.app-dialog--danger {
  border-left-color: var(--destructive);
}

.app-dialog-title {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

.app-dialog-message {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--muted-foreground);
  white-space: pre-wrap;
}

.app-dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}