.quiz-builder-mount { width: min(560px, 100%); margin: 16px auto; }
.quiz-builder { overflow: hidden; color: var(--text, #18222d); background: var(--surface, #fff); border: 1px solid var(--border, rgba(109, 120, 131, .25)); border-radius: 14px; }
.quiz-builder > summary { min-height: 52px; padding: 14px 16px; display: flex; align-items: center; font-weight: 750; cursor: pointer; touch-action: manipulation; }
.quiz-builder > summary::marker { color: var(--accent, #3390ec); }
.quiz-builder__inner { padding: 0 14px 16px; border-top: 1px solid var(--border, rgba(109, 120, 131, .25)); }
.quiz-builder__enabled, .quiz-builder__check, .quiz-builder__preview-option { min-height: 44px; display: flex; align-items: center; gap: 10px; cursor: pointer; }
.quiz-builder__enabled { margin: 12px 0; font-weight: 700; }
.quiz-builder input[type="checkbox"], .quiz-builder__dialog input[type="checkbox"], .quiz-builder__dialog input[type="radio"] { flex: 0 0 20px; width: 20px; height: 20px; accent-color: var(--accent, #3390ec); }
.quiz-builder__form, .quiz-builder__questions, .quiz-builder__options, .quiz-builder__finish { display: grid; gap: 12px; }
.quiz-builder__form[hidden] { display: none; }
.quiz-builder__finish-fields { display: grid; gap: 10px; }
.quiz-builder__finish-fields[hidden] { display: none; }
.quiz-builder > summary::after { content: "⌄"; margin-left: auto; }
.quiz-builder[open] > summary::after { transform: rotate(180deg); }
.quiz-builder__field { display: grid; gap: 5px; }
.quiz-builder__label { font-size: 13px; font-weight: 700; }
.quiz-builder__hint { color: var(--muted, #6d7883); font-size: 12px; }
.quiz-builder input[type="text"], .quiz-builder textarea { box-sizing: border-box; width: 100%; min-height: 44px; padding: 10px 12px; font-size: 16px; color: inherit; background: var(--surface, #fff); border: 1px solid var(--border, rgba(109, 120, 131, .25)); border-radius: 10px; line-height: 1.4; }
.quiz-builder textarea { min-height: 58px; resize: vertical; }
.quiz-builder input:focus, .quiz-builder textarea:focus, .quiz-builder button:focus-visible, .quiz-builder summary:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent, #3390ec) 35%, transparent); outline-offset: 2px; }
.quiz-builder [aria-invalid="true"] { border-color: var(--danger, #d63f3f) !important; }
.quiz-builder__question { min-width: 0; margin: 0; padding: 12px; border: 1px solid var(--border, rgba(109, 120, 131, .25)); border-radius: 12px; }
.quiz-builder__question-head { width: 100%; padding: 0 0 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; font-weight: 750; }
.quiz-builder__question-actions { display: flex; justify-content: flex-end; gap: 8px; }
.quiz-builder__option-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.quiz-builder button, .quiz-builder__dialog button { min-height: 44px; padding: 8px 12px; color: var(--accent, #1876c6); background: var(--surface, #fff); border: 1px solid var(--border, rgba(109, 120, 131, .25)); border-radius: 10px; font-weight: 700; cursor: pointer; touch-action: manipulation; transition: opacity 180ms ease, background-color 180ms ease, border-color 180ms ease; }
.quiz-builder button:hover { background: color-mix(in srgb, var(--accent, #3390ec) 8%, var(--surface, #fff)); }
.quiz-builder button:active { opacity: .72; }
.quiz-builder button:disabled, .quiz-builder__dialog button:disabled { opacity: .45; cursor: not-allowed; }
.quiz-builder__small-button { min-height: 44px !important; padding: 6px 9px !important; font-size: 12px; }
.quiz-builder__icon-button { width: 44px; min-width: 44px; height: 44px; padding: 10px !important; display: inline-grid; place-items: center; }
.quiz-builder__icon-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.quiz-builder__danger { color: var(--danger, #c64040) !important; }
.quiz-builder__secondary-button, .quiz-builder__preview-button { width: 100%; }
.quiz-builder__preview-button { color: var(--accent-text, #fff) !important; background: var(--accent, #3390ec) !important; border-color: var(--accent, #3390ec) !important; }
.quiz-builder__errors { padding: 10px 12px; color: var(--danger, #a52d2d); background: color-mix(in srgb, var(--danger, #d63f3f) 10%, var(--surface, #fff)); border: 1px solid color-mix(in srgb, var(--danger, #d63f3f) 42%, transparent); border-radius: 10px; }
.quiz-builder__errors strong { font-size: 13px; }
.quiz-builder__errors ul { margin: 4px 0 0; padding-left: 20px; font-size: 13px; }
.quiz-builder__dialog { width: min(520px, calc(100% - 24px)); max-height: calc(100dvh - 24px); padding: 0; color: var(--text, #18222d); background: var(--surface, #fff); border: 1px solid var(--border, rgba(109, 120, 131, .25)); border-radius: 16px; box-shadow: 0 24px 72px rgba(10, 25, 40, .34); }
.quiz-builder__dialog::backdrop { background: rgba(0, 0, 0, .55); }
.quiz-builder__dialog-head { min-height: 60px; padding: 8px 12px 8px 16px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--border, rgba(109, 120, 131, .25)); }
.quiz-builder__dialog h2, .quiz-builder__preview-content h3 { margin: 0; line-height: 1.25; }
.quiz-builder__dialog h2 { font-size: 18px; }
.quiz-builder__preview-content { padding: 16px; overflow-wrap: anywhere; }
.quiz-builder__preview-content > p { color: var(--muted, #6d7883); }
.quiz-builder__preview-step { color: var(--muted, #6d7883); font-size: 13px; font-weight: 700; }
.quiz-builder__preview-question { margin-top: 16px; padding-top: 12px; display: grid; gap: 6px; border-top: 1px solid var(--border, rgba(109, 120, 131, .25)); }
.quiz-builder__preview-option { padding: 7px 0; }
.quiz-builder__preview-thanks { padding-top: 12px; font-weight: 700; }
.quiz-builder__choice-hint { margin-left: auto; color: var(--muted, #6d7883); font-size: 12px; text-align: right; }
.quiz-builder__steps { margin: 0; padding: 9px 12px 9px 30px; color: var(--muted, #6d7883); background: color-mix(in srgb, var(--accent, #3390ec) 7%, var(--surface, #fff)); border-radius: 10px; font-size: 13px; line-height: 1.55; }
.quiz-builder__finish { padding: 0 0 2px; }
.quiz-builder input:disabled { cursor: not-allowed; opacity: .55; }
@media (max-width: 390px) { .quiz-builder__question-head { align-items: flex-start; } .quiz-builder__check { flex-wrap: wrap; } .quiz-builder__choice-hint { width: 100%; margin: -5px 0 5px 30px; text-align: left; } }
@media (prefers-reduced-motion: reduce) { .quiz-builder *, .quiz-builder *::before, .quiz-builder *::after { transition: none !important; } }