/* ══════════════════════════════════════════════════════════════════════
   STUDY HISTORY DETAIL - PREMIUM REPORT DESIGN
   ══════════════════════════════════════════════════════════════════════ */

/* ── Base Container ── */
.study-review {
    max-width: 720px;
    margin: 0 auto;
    color: var(--wq-text, #e8eaf0);
    overflow-wrap: anywhere;
    padding-bottom: 48px;
}
.study-review [hidden] { display: none !important; }

/* ── Back Link ── */
.study-review .review-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    margin-bottom: 8px;
    color: var(--wq-text-muted, #9aa0ad);
    text-decoration: none;
    font-size: .82rem;
    font-weight: 600;
    transition: color .15s ease;
}
.study-review .review-back:hover { color: var(--wq-accent, #78bdd2); }
.review-back span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--wq-surface-2, #23262f);
    border: 1px solid var(--wq-border, #2b2f3a);
    font-size: 1rem;
    transition: background .15s ease, border-color .15s ease;
}
.review-back:hover span {
    background: rgba(120, 189, 210, .12);
    border-color: rgba(120, 189, 210, .3);
    color: var(--wq-accent, #78bdd2);
}

/* ── Hero Section ── */
.review-hero {
    padding: 28px 28px 26px;
    border: 1px solid var(--wq-border, #2b2f3a);
    border-radius: 20px;
    background:
        linear-gradient(130deg, rgba(120, 189, 210, .08), transparent 55%),
        linear-gradient(250deg, rgba(16, 185, 129, .04), transparent 55%),
        var(--wq-surface, #1a1d24);
}
.review-eyebrow {
    display: inline-block;
    margin: 0 0 10px;
    padding: 3px 10px;
    border-radius: 6px;
    background: rgba(120, 189, 210, .12);
    color: var(--wq-accent, #78bdd2);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.study-review h1 {
    margin: 0;
    font-size: clamp(1.3rem, 4vw, 1.75rem);
    font-weight: 800;
    line-height: 1.4;
    letter-spacing: -.03em;
}
#reviewSummary {
    margin: 8px 0 0;
    font-size: .84rem;
    color: var(--wq-text-muted, #9aa0ad);
    line-height: 1.6;
}

/* ── Stats Grid ── */
.review-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 22px;
}
.review-stat {
    padding: 14px;
    border-radius: 12px;
    background: var(--wq-surface-2, #23262f);
    border: 1px solid transparent;
    transition: border-color .15s ease;
}
.review-stat:hover {
    border-color: var(--wq-border, #2b2f3a);
}
.review-stat span {
    display: block;
    color: var(--wq-text-muted, #9aa0ad);
    font-size: .72rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.review-stat strong {
    font-size: 1.3rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -.03em;
}
.review-stat--correct strong { color: #34d399; }
.review-stat--wrong strong { color: #fb7185; }

/* ── Accuracy Bar ── */
.review-accuracy { margin-top: 20px; }
.review-accuracy__label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.review-accuracy small {
    color: var(--wq-text-muted, #9aa0ad);
    margin-left: 6px;
    font-size: .7rem;
    font-weight: 400;
}
.review-accuracy strong {
    color: var(--wq-accent, #78bdd2);
    font-size: 1.1rem;
    font-variant-numeric: tabular-nums;
}
.review-track {
    height: 8px;
    background: var(--wq-surface-3, #2b2f3a);
    border-radius: 10px;
    overflow: hidden;
}
.review-track span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, #78bdd2, #34d399);
    border-radius: inherit;
    transition: width .6s cubic-bezier(.4, 0, .2, 1);
}

/* ── Questions Section ── */
.review-questions {
    margin-top: 32px;
}
.review-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 16px;
}
.review-toolbar h2 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 800;
}
.review-toolbar p {
    margin: 4px 0 0;
    font-size: .78rem;
    color: var(--wq-text-muted, #9aa0ad);
}

/* ── Filter Buttons ── */
:is(#reviewFilters, #completionFilters) {
    display: flex;
    gap: 3px;
    padding: 3px;
    border: 1px solid var(--wq-border, #2b2f3a);
    background: var(--wq-surface, #1a1d24);
    border-radius: 10px;
}
:is(#reviewFilters, #completionFilters) button {
    min-height: 36px;
    padding: 6px 14px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--wq-text-muted, #9aa0ad);
    font: inherit;
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
    white-space: nowrap;
}
:is(#reviewFilters, #completionFilters) button:hover {
    background: var(--wq-surface-2, #23262f);
    color: var(--wq-text, #e8eaf0);
}
:is(#reviewFilters, #completionFilters) button[aria-pressed="true"] {
    background: var(--wq-accent, #78bdd2);
    color: var(--wq-on-accent, #102f3b);
    box-shadow: 0 2px 8px rgba(120, 189, 210, .3);
}
.study-review :is(a, button):focus-visible {
    outline: 2px solid var(--wq-accent, #78bdd2);
    outline-offset: 3px;
}

/* ── Items List ── */
:is(#reviewItems, .review-items) {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
}

/* ── Question Card ── */
.review-item {
    border: 1px solid var(--wq-border, #2b2f3a);
    border-radius: 16px;
    padding: 22px;
    background: var(--wq-surface, #1a1d24);
    min-width: 0;
    transition: border-color .15s ease;
}
.review-item:hover {
    border-color: var(--wq-border-strong, #3b4252);
}

/* Colored left indicator for graded items */
.review-item[data-result="correct"] { border-left: 3px solid #34d399; }
.review-item[data-result="wrong"] { border-left: 3px solid #fb7185; }

.review-item__head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    font-size: .75rem;
}
.review-item__number {
    font-weight: 800;
    font-size: .78rem;
    color: var(--wq-text-muted, #9aa0ad);
    font-variant-numeric: tabular-nums;
}
.review-item__badge {
    border-radius: 6px;
    padding: 3px 8px;
    background: var(--wq-surface-2, #23262f);
    font-weight: 700;
    font-size: .73rem;
}
[data-result="correct"] .review-item__badge {
    color: #34d399;
    background: rgba(16, 185, 129, .1);
}
[data-result="wrong"] .review-item__badge {
    color: #fb7185;
    background: rgba(244, 63, 94, .1);
}
.review-item__time {
    margin-left: auto;
    color: var(--wq-text-muted, #9aa0ad);
    font-variant-numeric: tabular-nums;
}

/* Question text */
.review-item h2 {
    font-size: 1rem;
    white-space: pre-wrap;
    line-height: 1.75;
    margin: 0 0 16px;
    font-weight: 600;
}

/* Options block */
.review-options {
    margin: 0 0 16px;
    padding: 14px 16px;
    background: var(--wq-surface-2, #23262f);
    border-radius: 10px;
    font-size: .86rem;
    line-height: 1.8;
    white-space: pre-wrap;
}

/* Answer cards */
.review-answers {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}
.review-answer {
    padding: 14px 16px;
    border: 1px solid var(--wq-border, #2b2f3a);
    border-radius: 12px;
    transition: border-color .15s ease;
}
.review-answer:only-child {
    grid-column: 1 / -1;
}
.review-answer--correct {
    background: rgba(16, 185, 129, .05);
    border-color: rgba(16, 185, 129, .2);
}
.review-answer--wrong {
    background: rgba(244, 63, 94, .05);
    border-color: rgba(244, 63, 94, .2);
}

/* Labels & text */
.review-item__label {
    display: block;
    color: var(--wq-text-muted, #9aa0ad);
    font-size: .72rem;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: .02em;
}
.review-item p {
    margin: 0;
    white-space: pre-wrap;
    font-size: .88rem;
    line-height: 1.75;
}

/* Explanation */
.review-explanation {
    margin-top: 16px;
    padding: 16px;
    border-radius: 10px;
    background: var(--wq-surface-2, #23262f);
    border: 1px solid var(--wq-border, #2b2f3a);
}
.review-explanation .review-item__label {
    color: var(--wq-accent-2, #a0d3e1);
}

/* AI Feedback */
.review-feedback {
    margin-top: 12px;
    padding: 16px;
    border-radius: 10px;
    background: rgba(168, 85, 247, .06);
    border: 1px solid rgba(168, 85, 247, .15);
}
.review-feedback .review-item__label {
    color: #a78bfa;
}

/* Notice message */
.review-notice {
    text-align: center;
    padding: 24px 20px;
    border: 1px dashed var(--wq-border, #2b2f3a);
    border-radius: 14px;
    color: var(--wq-text-muted, #9aa0ad);
    line-height: 1.7;
    font-size: .85rem;
}

/* ── Mobile Responsive ── */
@media (max-width: 600px) {
    .study-review { padding-bottom: 32px; }
    .review-hero { padding: 20px 16px; border-radius: 14px; }
    .study-review h1 { font-size: 1.25rem; }
    .review-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
        margin-top: 18px;
    }
    .review-stat { padding: 12px; }
    .review-stat span { font-size: .7rem; margin-bottom: 4px; }
    .review-stat strong { font-size: 1.15rem; }
    .review-questions { margin-top: 24px; }
    .review-toolbar { gap: 10px; margin-bottom: 12px; }
    .review-toolbar h2 { font-size: .95rem; }
    .review-item { padding: 16px; border-radius: 12px; }
    .review-item h2 { font-size: .92rem; }
    .review-answers { grid-template-columns: 1fr; }
    .review-options { padding: 12px 14px; font-size: .82rem; }
    .review-answer { padding: 12px 14px; }
    :is(#reviewFilters, #completionFilters) { width: 100%; }
    :is(#reviewFilters, #completionFilters) button { flex: 1; padding: 6px 8px; font-size: .76rem; }
    .review-explanation, .review-feedback { padding: 14px; }
}

.review-bookmark {
    margin-left: auto;
    min-height: 40px;
    padding: 6px 10px;
    border: 1px solid var(--wq-border, #2b2f3a);
    border-radius: 8px;
    background: var(--wq-surface-2, #23262f);
    color: var(--wq-text, #e8eaf0);
    font: inherit;
    cursor: pointer;
    white-space: nowrap;
}
.review-bookmark[aria-pressed="true"] { color: var(--wq-accent, #78bdd2); border-color: currentColor; }
.review-bookmark:disabled { opacity: .6; cursor: wait; }
.lq-summary-state .study-review { width: 100%; padding-bottom: 0; }
.lq-summary-state .review-item__head { flex-wrap: wrap; }

/* Completion review uses the same quiet paper materials as the set detail. */
.is-local-quiz .lq-wrapper:has(#lqSummary[style*="display: block"]) { overflow-y: auto !important; overscroll-behavior: contain; }
.is-local-quiz .lq-summary-card { padding: 20px; gap: 12px; border-color: var(--wq-border); }
.is-local-quiz .lq-summary-icon { font-size: 1.8rem; }
.is-local-quiz .lq-summary-title { font-size: 1.25rem; font-weight: 600; }
.is-local-quiz .lq-summary-sub { margin: 0; line-height: 1.6; }
.is-local-quiz .lq-stat-item { padding: 10px; border-radius: 9px; }
.is-local-quiz .lq-stat-val { font-size: 1.15rem; font-weight: 600; }
.is-local-quiz .lq-summary-state .review-questions { margin-top: 24px; text-align: left; }
.is-local-quiz .lq-summary-state .review-toolbar { display: flex; flex-direction: column; align-items: stretch; gap: 12px; margin-bottom: 16px; }
.is-local-quiz #completionQuestionsTitle { margin: 0; font-size: 1.1rem; font-weight: 600; }
.is-local-quiz .review-toolbar p { margin: 6px 0 0; font-size: .8rem; line-height: 1.65; color: var(--wq-text-muted); }
.is-local-quiz #completionFilters { padding: 0; gap: 20px; border: 0; border-bottom: 1px solid var(--wq-border); border-radius: 0; background: transparent; }
.is-local-quiz #completionFilters button { min-height: 44px; padding: 10px 2px; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; color: var(--wq-text-muted); box-shadow: none; }
.is-local-quiz #completionFilters button[aria-pressed="true"] { color: var(--wq-text); border-bottom-color: var(--wq-accent); }
.is-local-quiz .review-item { padding: 16px; border-radius: 12px; background: var(--wq-paper-grain), var(--wq-surface); }
.is-local-quiz .review-item h2 { font-size: 1rem; line-height: 1.65; font-weight: 500; margin: 0 0 14px; }
.is-local-quiz .review-answers { gap: 10px; }
.is-local-quiz .review-answer { background: var(--wq-surface-2); border: 1px solid var(--wq-border); }
.is-local-quiz .review-explanation { background: transparent; border: 0; border-top: 1px solid var(--wq-border); border-radius: 0; padding: 14px 0 0; }
.is-local-quiz .review-item p { line-height: 1.75; }
.study-review .review-bookmark { min-height: 44px; font-size: .78rem; background: transparent; }
.study-review .review-bookmark[aria-pressed="true"] { background: var(--wq-accent-soft); color: var(--wq-accent); }
.is-local-quiz .lq-completion-actions { margin: 24px auto 0; max-width: 420px; padding-bottom: 16px; }
.is-local-quiz .lq-completion-actions .lq-signup-invite { box-sizing: border-box; }
.is-local-quiz .lq-summary-actions { max-width: none; }
.is-study-result .rv-list-title { margin: 28px 0 6px; font-size: 1.1rem; font-weight: 600; color: var(--wq-text); }
.is-study-result .rv-list-description { margin: 0 0 16px; font-size: .82rem; line-height: 1.6; color: var(--wq-text-muted); }
.is-study-result .rv-item { background: var(--wq-paper-grain), var(--wq-surface); border-color: var(--wq-border); box-shadow: none; }
.is-study-result .rv-bookmark { min-height: 44px; font-size: .78rem; background: transparent; border: 1px solid var(--wq-border); color: var(--wq-text-muted); }
.is-study-result .rv-bookmark.is-on { background: var(--wq-accent-soft); color: var(--wq-accent); border-color: var(--wq-accent); }
.is-study-result #resultBookmarkNotice { padding: 12px; color: var(--wq-text-soft); background: var(--wq-surface-2); border-radius: 9px; font-size: .85rem; }