/* SEBERD Article Quiz — frontend */

.saq-quiz,
.saq-quiz * {
  box-sizing: border-box;
}

.saq-quiz [hidden] {
  display: none !important;
}

.saq-quiz {
  --saq-ok: #4d9e2a;
  --saq-ok-border: #1e3d14;
  --saq-ok-soft: rgba(77, 158, 42, 0.07);
  --saq-bad: #c44;
  --saq-bad-border: #3d1414;
  --saq-bad-soft: rgba(204, 68, 68, 0.07);
  --saq-line: #1f1f1f;
  --saq-line-soft: #1a1a1a;
  --saq-opt-line: #1e1e1e;
  --saq-dock-line: #141414;
  --saq-num-line: #2a2a2a;
  --saq-panel: color-mix(in srgb, var(--bg-card) 92%, #000);
  --saq-panel-deep: color-mix(in srgb, var(--bg) 55%, #000);
  --saq-expl-bg: color-mix(in srgb, var(--bg) 70%, #000);
  width: 100%;
  margin: 2.5rem 0 0;
  padding: 0;
  color: var(--text);
  font-family: var(--mono, ui-monospace, monospace);
}

.saq-quiz__card {
  overflow: hidden;
  background: var(--saq-panel);
  border: 1px solid var(--saq-line);
  border-radius: 4px;
}

.saq-quiz__questions {
  display: flex;
  flex-direction: column;
}

.saq-quiz__question + .saq-quiz__question {
  border-top: 1px solid var(--saq-line-soft);
}

.saq-quiz__head {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 20px 24px 0;
}

.saq-quiz__num {
  flex-shrink: 0;
  margin-top: 2px;
}

.saq-quiz__num-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  background: var(--saq-panel);
  border: 1px solid var(--saq-num-line);
  border-radius: 3px;
}

.saq-quiz .saq-quiz__prompt {
  margin: 0;
  padding-top: 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.65;
}

.saq-quiz__divider {
  height: 1px;
  margin: 20px 24px;
  background: var(--saq-line-soft);
}

.saq-quiz__options {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0 24px;
}

.saq-quiz__option {
  position: relative;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  cursor: pointer;
  background: var(--saq-panel-deep);
  border: 1px solid var(--saq-opt-line);
  border-radius: 3px;
  transition: border-color 0.1s ease;
}

.saq-quiz__option::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: transparent;
  transition: background 0.1s ease;
}

.saq-quiz__option:hover {
  border-color: #2e2e2e;
}

.saq-quiz__option:hover::before {
  background: #333;
}

.saq-quiz__input {
  position: absolute;
  width: 0;
  height: 0;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.saq-quiz__letter {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 40px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  background: transparent;
  border-right: 1px solid var(--saq-line-soft);
  transition: color 0.1s ease, background-color 0.1s ease, border-color 0.1s ease;
}

.saq-quiz__option-body {
  display: flex;
  flex: 1;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  padding: 11px 14px;
}

.saq-quiz__option-text {
  min-width: 0;
  color: var(--text-sec);
  font-size: 13px;
  line-height: 1.4;
  overflow-wrap: anywhere;
  transition: color 0.1s ease;
}

.saq-quiz__option:hover .saq-quiz__option-text {
  color: color-mix(in srgb, var(--text) 72%, var(--text-sec));
}

.saq-quiz__mark {
  flex-shrink: 0;
  width: 1em;
  font-size: 13px;
  line-height: 1;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.saq-quiz:not([data-saq-phase='checked']) .saq-quiz__option:has(input:checked) {
  border-color: var(--accent);
}

.saq-quiz:not([data-saq-phase='checked']) .saq-quiz__option:has(input:checked)::before {
  background: var(--accent);
}

.saq-quiz:not([data-saq-phase='checked']) .saq-quiz__option:has(input:checked) .saq-quiz__letter {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border-right-color: #2a1a0a;
}

.saq-quiz:not([data-saq-phase='checked']) .saq-quiz__option:has(input:checked) .saq-quiz__option-text {
  color: #e0e0e0;
}

.saq-quiz__option[data-saq-answer-state='correct'] {
  border-color: var(--saq-ok-border);
}

.saq-quiz__option[data-saq-answer-state='correct']::before {
  background: var(--saq-ok);
}

.saq-quiz__option[data-saq-answer-state='correct'] .saq-quiz__letter {
  color: var(--saq-ok);
  background: var(--saq-ok-soft);
  border-right-color: #1a2a14;
}

.saq-quiz__option[data-saq-answer-state='correct'] .saq-quiz__option-text {
  color: #7cd44a;
}

.saq-quiz__option[data-saq-answer-state='correct'] .saq-quiz__mark {
  color: var(--saq-ok);
  opacity: 1;
}

.saq-quiz__option[data-saq-answer-state='correct'] .saq-quiz__mark::before {
  content: '✓';
}

.saq-quiz__option[data-saq-answer-state='incorrect'] {
  border-color: var(--saq-bad-border);
}

.saq-quiz__option[data-saq-answer-state='incorrect']::before {
  background: var(--saq-bad);
}

.saq-quiz__option[data-saq-answer-state='incorrect'] .saq-quiz__letter {
  color: var(--saq-bad);
  background: var(--saq-bad-soft);
  border-right-color: #2a1414;
}

.saq-quiz__option[data-saq-answer-state='incorrect'] .saq-quiz__option-text {
  color: #e07070;
}

.saq-quiz__option[data-saq-answer-state='incorrect'] .saq-quiz__mark {
  color: var(--saq-bad);
  opacity: 1;
}

.saq-quiz__option[data-saq-answer-state='incorrect'] .saq-quiz__mark::before {
  content: '×';
}

.saq-quiz__feedback {
  margin: 16px 24px 0;
  padding: 14px 16px;
  background: var(--saq-expl-bg);
  border: 1px solid var(--saq-line-soft);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
  animation: saq-fade-in 0.2s ease;
}

.saq-quiz .saq-quiz__feedback-label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.saq-quiz .saq-quiz__feedback-text p {
  margin: 0 0 0.75em;
  color: color-mix(in srgb, var(--text-muted) 85%, var(--text-sec));
}

.saq-quiz__feedback-text {
  color: var(--text-sec);
  font-size: 12px;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.saq-quiz__feedback-text p:last-child {
  margin-bottom: 0;
}

.saq-quiz__feedback-text code {
  padding: 1px 5px;
  color: var(--accent);
  font-family: inherit;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 2px;
}

.saq-quiz__dock {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 16px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--saq-dock-line);
}

.saq-quiz .saq-quiz__result {
  flex: 1;
  margin: 0;
  min-height: 1em;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: transparent;
}

.saq-quiz__result--ok:not(:empty) {
  color: var(--saq-ok);
}

.saq-quiz__result--fail:not(:empty) {
  color: var(--saq-bad);
}

.saq-quiz__result:not(:empty)::before {
  content: '// ';
  color: var(--accent);
}

.saq-quiz[data-saq-phase='checked'] .saq-quiz__option {
  cursor: default;
  pointer-events: none;
}

.saq-quiz__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 2px;
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.1s ease, border-color 0.1s ease, color 0.1s ease, transform 0.1s ease, opacity 0.1s ease;
}

.saq-quiz__btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.saq-quiz__btn--primary {
  color: var(--on-emphasis);
  background: var(--accent);
  border: none;
}

.saq-quiz__btn--primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 88%, #fff);
}

.saq-quiz__btn--primary:active:not(:disabled) {
  transform: scale(0.97);
}

.saq-quiz__btn--primary:disabled {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}

.saq-quiz__btn--ghost {
  color: var(--text-muted);
  font-weight: 400;
  background: transparent;
  border: 1px solid var(--saq-line);
}

.saq-quiz__btn--ghost:hover {
  color: var(--text-sec);
  border-color: color-mix(in srgb, var(--border) 75%, transparent);
}

@keyframes saq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }

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

@media (max-width: 540px) {
  .saq-quiz__head,
  .saq-quiz__options,
  .saq-quiz__feedback,
  .saq-quiz__dock {
    padding-right: 16px;
    padding-left: 16px;
  }

  .saq-quiz__divider {
    margin-right: 16px;
    margin-left: 16px;
  }

  .saq-quiz__feedback {
    margin-right: 16px;
    margin-left: 16px;
  }

  .saq-quiz__dock {
    flex-direction: column;
    align-items: stretch;
  }

  .saq-quiz__result {
    text-align: center;
  }

  .saq-quiz__btn {
    justify-content: center;
    width: 100%;
  }
}