:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #dfe3e8;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2f6feb;
  --primary-dark: #2358c2;
  --danger: #e0483e;
  --success: #1f9d55;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.center-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 1px 3px rgba(20, 20, 40, 0.05);
}

h1, h2, h3 {
  margin-top: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.topbar .who {
  color: var(--muted);
  font-size: 14px;
}

label {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin: 14px 0 6px;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
}

button:hover {
  background: var(--primary-dark);
}

button.secondary {
  background: #eef1f6;
  color: var(--text);
}

button.secondary:hover {
  background: #e2e6ee;
}

button.danger {
  background: var(--danger);
}

button.danger:hover {
  background: #c73c33;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  background: none;
  color: var(--muted);
  border-radius: 0;
  padding: 10px 14px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
}

.tab-btn:hover {
  background: none;
  color: var(--text);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

.tab-panel {
  display: none;
}

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

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
}

.list-item .info strong {
  display: block;
}

.list-item .info span {
  color: var(--muted);
  font-size: 13px;
}

.question-block {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
  position: relative;
}

.question-block .qnum {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.option-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.option-row input[type="text"] {
  flex: 1;
}

.error-msg {
  color: var(--danger);
  font-size: 14px;
  margin-top: 10px;
  min-height: 20px;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

.result-score {
  text-align: center;
  padding: 30px 10px;
}

.result-score .big {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
}

/* ---- Batafsil natijalar ---- */
.result-header-card {
  margin-bottom: 20px;
}

.result-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.result-score-big {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.result-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
}

.legend-dot.correct { background: #22a058; }
.legend-dot.wrong { background: #e0483e; }
.legend-dot.unanswered { background: #f0b429; }

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

.stat-box .num {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}

.stat-box .label {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

.stat-box.stat-correct { border-color: #b7e4c7; background: #f3fbf6; }
.stat-box.stat-correct .num { color: #1f9d55; }
.stat-box.stat-wrong { border-color: #f5c2c0; background: #fff6f5; }
.stat-box.stat-wrong .num { color: #e0483e; }
.stat-box.stat-unanswered { border-color: #f5dfa0; background: #fffbeb; }
.stat-box.stat-unanswered .num { color: #c58d00; }

.result-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 12px;
  background: var(--card);
}

.result-item.status-correct {
  background: #f3fbf6;
  border-color: #b7e4c7;
}

.result-item.status-wrong {
  background: #fff6f5;
  border-color: #f5c2c0;
}

.result-item.status-unanswered {
  background: #fffbeb;
  border-color: #f5dfa0;
}

.result-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.result-item-num {
  font-weight: 700;
  font-size: 15px;
}

.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.status-badge.status-correct {
  background: #d8f3e0;
  color: #167a40;
}

.status-badge.status-wrong {
  background: #fde2e0;
  color: #b52f27;
}

.status-badge.status-unanswered {
  background: #fff0c2;
  color: #9a6f00;
}

.result-question-text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
}

.result-code-block {
  margin: 0 0 12px;
  padding: 12px 14px;
  background: #1e2433;
  color: #e8ecf4;
  border-radius: 8px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre;
}

.result-answer-row {
  font-size: 14px;
  line-height: 1.5;
  margin-top: 8px;
}

.result-answer-row strong {
  color: var(--text);
}

.result-answer-row .value {
  color: var(--muted);
}

.result-answer-row .value.user-wrong {
  color: #b52f27;
  font-weight: 600;
}

.result-answer-row .value.user-correct {
  color: #167a40;
  font-weight: 600;
}

@media (max-width: 560px) {
  .result-stats {
    grid-template-columns: 1fr;
  }
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: #eef1f6;
  color: var(--muted);
}

a.link {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
}
a.link:hover {
  text-decoration: underline;
}

/* ---- Fullscreen bitta-savolli test rejimi ---- */
.quiz-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.quiz-shell.test-locked {
  position: fixed;
  inset: 0;
  z-index: 9999;
  min-height: 100vh;
  height: 100vh;
  overflow: auto;
}

.quiz-progress-wrap {
  padding: 18px 24px 0;
}

.quiz-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}

.quiz-progress-bar {
  height: 8px;
  border-radius: 999px;
  background: #e4e8ef;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  transition: width 0.25s ease;
}

.quiz-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 24px;
}

.quiz-card {
  width: 100%;
  max-width: 820px;
}

.quiz-question {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 28px;
}

.quiz-code-block {
  margin: -8px 0 24px;
  padding: 18px 20px;
  background: #1e2433;
  color: #e8ecf4;
  border-radius: 12px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 17px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}

.quiz-text-answer {
  margin-top: 4px;
}

.quiz-text-answer label {
  margin-top: 0;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text);
}

.quiz-text-answer textarea {
  min-height: 120px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 16px;
  line-height: 1.5;
  resize: vertical;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.option-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  font-size: 19px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.option-card:hover {
  border-color: var(--primary);
}

.option-card.selected {
  border-color: var(--primary);
  background: #eef4ff;
}

.option-letter {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--muted);
}

.option-card.selected .option-letter {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px 26px;
  border-top: 1px solid var(--border);
  background: var(--card);
}

.quiz-nav button {
  min-width: 130px;
  padding: 12px 22px;
  font-size: 16px;
}

.quiz-start {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* ---- Ogohlantirish modali ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 35, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 26px;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.modal-box h3 {
  margin-bottom: 10px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions button {
  flex: 1;
}

.list-actions {
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.rating-modal {
  max-height: min(80vh, 640px);
  display: flex;
  flex-direction: column;
}

.rating-list {
  overflow-y: auto;
  margin: 8px 0 4px;
  max-height: 52vh;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.rating-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.rating-row:last-child {
  border-bottom: none;
}

.rating-row.is-me {
  background: #eef4ff;
}

.rating-place {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  background: #eef0f4;
  color: var(--text);
  flex-shrink: 0;
}

.rating-row.top-1 .rating-place {
  background: #f6e27a;
  color: #6a5300;
}

.rating-row.top-2 .rating-place {
  background: #d9dee7;
  color: #3a4454;
}

.rating-row.top-3 .rating-place {
  background: #e8c4a8;
  color: #6a3e1f;
}

.rating-user {
  flex: 1;
  min-width: 0;
}

.rating-user strong {
  display: block;
  font-size: 15px;
}

.rating-user span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.rating-score {
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.fullscreen-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10001;
  background: #1e2433;
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.fullscreen-toast.show {
  opacity: 1;
}

#fullscreenBlockModal {
  z-index: 10002;
}

#finishConfirmModal {
  z-index: 10003;
}

.quiz-shell.quiz-paused .quiz-progress-wrap,
.quiz-shell.quiz-paused .quiz-body,
.quiz-shell.quiz-paused .quiz-nav {
  pointer-events: none;
  user-select: none;
  filter: blur(2px);
}