/* ---- Exam & Practice ---- */

.exam-panel {
    display: none;
}

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

.count-cards {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.count-card {
    flex: 1;
    text-align: center;
    padding: 20px 16px;
    border: 2px solid var(--kw-border);
    border-radius: var(--kw-radius-lg);
    cursor: pointer;
    transition: all 0.15s;
    background: var(--kw-surface-1);
}

    .count-card:hover {
        border-color: var(--kw-border-strong);
    }

    .count-card.selected {
        border-color: var(--kw-brand);
        background: var(--kw-brand-light);
    }

.count-num {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 2px;
}

.count-label {
    font-size: 13px;
    color: var(--kw-text-secondary);
}

.count-time {
    font-size: 12px;
    color: var(--kw-text-muted);
    margin-top: 4px;
}

.info-box {
    background: var(--kw-surface-1);
    border-radius: var(--kw-radius-md);
    padding: 16px 20px;
    margin-bottom: 20px;
}

.info-row {
    font-size: 13px;
    color: var(--kw-text-secondary);
    padding: 4px 0;
}

.btn--start {
    background: var(--kw-brand);
    color: var(--kw-text-on-accent);
    border: none;
    font-weight: 600;
}

    .btn--start:hover {
        background: var(--kw-brand-hover);
    }

.btn--full {
    width: 100%;
    justify-content: center;
}

/* Progress bar */

.progress-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.progress-counter {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.progress-track {
    flex: 1;
    height: 6px;
    background: var(--kw-surface-2);
    border-radius: 3px;
    overflow: hidden;
    display: flex;
}

.progress-fill {
    height: 100%;
    width: var(--progress-value, 0%);
    transition: width 0.3s;
    border-radius: 3px;
}

.progress-fill--brand {
    background: var(--kw-brand);
}

.progress-fill--success {
    background: var(--kw-success);
}

.progress-fill--danger {
    background: var(--kw-danger);
}

/* Question card */

.question-card {
    background: var(--kw-surface-1);
    border: 1px solid var(--kw-border);
    border-radius: var(--kw-radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.question-topic {
    font-size: 12px;
    color: var(--kw-text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.question-text {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 20px;
}

.question-media {
    display: block;
    max-width: 100%;
    max-height: 320px;
    margin: 0 auto 20px;
    border-radius: var(--kw-radius-md);
}

.kb-media {
    display: block;
    max-width: 100%;
    max-height: 420px;
    margin: 0 auto 24px;
    border-radius: var(--kw-radius-md);
}

.question-multi-hint {
    font-size: 12px;
    color: var(--kw-brand);
    font-weight: 500;
    margin-bottom: 12px;
}

.question-answers {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.question-answer {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 1px solid var(--kw-border);
    border-radius: var(--kw-radius-md);
    cursor: pointer;
    transition: all 0.15s;
    font-size: 14px;
    line-height: 1.5;
}

    .question-answer:hover {
        border-color: var(--kw-border-strong);
        background: var(--kw-surface-2);
    }

    .question-answer.selected {
        border-color: var(--kw-brand);
        background: var(--kw-brand-light);
    }

    .question-answer.correct {
        border-color: var(--kw-success);
        background: var(--kw-success-light);
    }

    .question-answer.wrong {
        border-color: var(--kw-danger);
        background: var(--kw-danger-light);
    }

.question-radio {
    width: 18px;
    height: 18px;
    border: 2px solid var(--kw-border-strong);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.question-radio-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transition: background 0.15s;
}

.question-answer.selected .question-radio {
    border-color: var(--kw-brand);
}

.question-answer.selected .question-radio-dot {
    background: var(--kw-brand);
}

.question-answer.correct .question-radio {
    border-color: var(--kw-success);
}

.question-answer.correct .question-radio-dot {
    background: var(--kw-success);
}

.question-answer.wrong .question-radio {
    border-color: var(--kw-danger);
}

.question-answer.wrong .question-radio-dot {
    background: var(--kw-danger);
}

/* Checkbox (multi_choice) — square variant */

.question-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--kw-border-strong);
    border-radius: var(--kw-radius-sm, 4px);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.question-checkbox-mark {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    transition: background 0.15s;
}

.question-answer.selected .question-checkbox {
    border-color: var(--kw-brand);
}

.question-answer.selected .question-checkbox-mark {
    background: var(--kw-brand);
}

.question-answer.correct .question-checkbox {
    border-color: var(--kw-success);
}

.question-answer.correct .question-checkbox-mark {
    background: var(--kw-success);
}

.question-answer.wrong .question-checkbox {
    border-color: var(--kw-danger);
}

.question-answer.wrong .question-checkbox-mark {
    background: var(--kw-danger);
}

.question-answer-label {
    font-weight: 600;
    color: var(--kw-text-muted);
    min-width: 20px;
}

/* Explanation */

.question-explanation {
    border-radius: var(--kw-radius-md);
    padding: 16px 20px;
    margin-bottom: 16px;
}

.question-explanation--success {
    background: var(--kw-success-light);
    border: 1px solid var(--kw-success);
}

.question-explanation--danger {
    background: var(--kw-danger-light);
    border: 1px solid var(--kw-danger);
}

.question-expl-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.question-explanation--success .question-expl-title {
    color: var(--kw-success);
}

.question-explanation--danger .question-expl-title {
    color: var(--kw-danger);
}

.question-expl-text {
    font-size: 14px;
    color: var(--kw-text-secondary);
    line-height: 1.6;
}

.question-expl-source {
    font-size: 12px;
    color: var(--kw-text-muted);
    margin-top: 8px;
}

.question-expl-text img {
    display: block;
    max-width: 100%;
    max-height: 320px;
    margin: 0 auto 20px;
    border-radius: var(--kw-radius-md);
}

.question-expl-text p {
    margin-bottom: 12px;
}

.question-expl-text figcaption {
    text-align: center;
}

.question-expl-text figure {
    margin: 20px;
}
/* Nav dots */

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

.nav-dots {
    display: flex;
    width: 100%;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 0 auto 10px;
}

.nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--kw-surface-2);
    border: 1px solid var(--kw-border);
    cursor: pointer;
    transition: all 0.15s;
}

    .nav-dot.answered {
        background: var(--kw-brand-light);
        border-color: var(--kw-brand);
    }

    .nav-dot.current {
        border-color: var(--kw-brand);
        box-shadow: 0 0 0 2px var(--kw-brand-light);
    }

@media (max-width: 640px) {
    .nav-dots {
        gap: 8px;
        margin-bottom: 14px;
    }

    .nav-dot {
        width: 24px;
        height: 24px;
        border-width: 2px;
    }

    .nav-dot.current {
        box-shadow: 0 0 0 3px var(--kw-brand-light);
    }
}

/* Exam review */

.exam-review {
    width: min(820px, 100%);
    margin: 0 auto;
}

.exam-review-header {
    margin-bottom: 24px;
    padding: clamp(24px, 4vw, 40px);
    border: 0;
    border-radius: var(--kw-radius-lg);
    background: var(--kw-brand);
    color: white;
    box-shadow: var(--kw-shadow-md);
}

.exam-review-number,
.exam-review-selected-label {
    color: var(--kw-text-muted);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.exam-review-kicker {
    color: rgba(255, 255, 255, .78);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.exam-review-header h1 {
    margin: 8px 0 12px;
    color: white;
    font-size: clamp(28px, 5vw, 42px);
    line-height: 1.08;
    letter-spacing: -.025em;
}

.exam-review-header p {
    max-width: 680px;
    margin: 0;
    color: rgba(255, 255, 255, .84);
    line-height: 1.6;
}

.exam-review-progress {
    display: inline-flex;
    margin-top: 18px;
    padding: 8px 11px;
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 999px;
    background: rgba(255, 255, 255, .12);
    color: white;
}

.exam-review-list {
    display: grid;
    gap: 12px;
}

.exam-review-item {
    padding: 16px;
    border: 1px solid var(--kw-border);
    border-radius: var(--kw-radius-lg);
    background: var(--kw-surface-2);
}

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

.exam-review-question {
    color: var(--kw-text);
    font-weight: 600;
}

.exam-review-question p {
    margin: 0;
}

.exam-review-selected {
    margin-top: 12px;
    padding: 10px 12px;
    border-left: 3px solid var(--kw-brand);
    background: var(--kw-surface-1);
}

.exam-review-answer {
    margin-top: 5px;
    color: var(--kw-text-secondary);
}

.exam-review-answer p {
    margin: 0;
}

.exam-review-submit {
    position: sticky;
    bottom: 12px;
    margin-top: 20px;
    padding: 10px;
    border: 1px solid var(--kw-border);
    border-radius: var(--kw-radius-lg);
    background: color-mix(in srgb, var(--kw-bg) 90%, transparent);
    box-shadow: var(--kw-shadow-md);
    backdrop-filter: blur(8px);
}

@media (max-width: 640px) {
    .exam-review-item {
        padding: 14px;
    }

    .exam-review-header {
        padding: 24px 18px;
    }

    .exam-review-header h1 {
        font-size: 28px;
    }
}

/* Results */

.results-header {
    text-align: center;
    margin-bottom: 24px;
}

.results-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.results-icon--pass {
    color: var(--kw-success);
}

.results-icon--fail {
    color: var(--kw-danger);
}

.results-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 4px;
}

.results-sub {
    font-size: 14px;
    color: var(--kw-text-secondary);
}

.results-score {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.results-score-card {
    flex: 1;
    text-align: center;
    padding: 16px;
    background: var(--kw-surface-1);
    border-radius: var(--kw-radius-lg);
    border: 1px solid var(--kw-border);
}

.results-score-val {
    font-size: 28px;
    font-weight: 700;
}

.results-score-val--success {
    color: var(--kw-success);
}

.results-score-val--danger {
    color: var(--kw-danger);
}

.results-score-label {
    font-size: 12px;
    color: var(--kw-text-muted);
    margin-top: 4px;
}

.results-wrong-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.results-wrong-item {
    padding: 12px 16px;
    background: var(--kw-surface-1);
    border-radius: var(--kw-radius-md);
    margin-bottom: 8px;
    border: 1px solid var(--kw-border);
}

.results-wrong-q {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.results-wrong-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
}

.results-wrong-your {
    color: var(--kw-danger);
}

.results-wrong-correct {
    color: var(--kw-success);
}

.results-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 24px;
}
/* Learning bar */

.learn-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.learn-stats {
    display: flex;
    gap: 12px;
}

.learn-stat {
    font-size: 14px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.learn-streak {
    font-size: 13px;
    color: var(--kw-text-secondary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}
/* Topic grid */

.topic-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

    .topic-grid .topic-chip {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 14px;
        border: 1px solid var(--kw-border);
        border-radius: var(--kw-radius-pill);
        font-size: 13px;
        cursor: pointer;
        transition: all 0.15s;
        color: var(--kw-text-secondary);
        background: var(--kw-surface-1);
    }

        .topic-grid .topic-chip:hover {
            border-color: var(--kw-border-strong);
        }

        .topic-grid .topic-chip:has(.topic-checkbox:checked),
        .topic-grid .topic-chip.selected {
            border-color: var(--kw-brand);
            background: var(--kw-brand-light);
            color: var(--kw-brand);
        }

.topic-check {
    display: none;
    font-size: 11px;
}

.topic-chip:has(.topic-checkbox:checked) .topic-check,
.topic-chip.selected .topic-check {
    display: inline;
    color: var(--kw-brand);
}

.topic-count {
    font-size: 11px;
    color: var(--kw-text-muted);
    margin-left: 2px;
    font-variant-numeric: tabular-nums;
}

.retry-badge {
    font-size: 10px;
    padding: 2px 8px;
    background: var(--kw-warning-light);
    color: var(--kw-warning);
    border-radius: var(--kw-radius-pill);
    font-weight: 500;
}

/* ===== Hidden native inputs ===== */
.question-answer-input, .topic-checkbox, .count-radio {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}
/* ===== Answer result icons ===== */
.question-answer-icon {
    margin-left: auto;
    font-weight: 700;
    flex-shrink: 0;
}

.question-answer-icon--correct {
    color: var(--kw-success);
}

.question-answer-icon--wrong {
    color: var(--kw-danger);
}
/* ===== Batch badge ===== */
.batch-badge {
    display: inline-block;
    background: var(--kw-brand);
    color: var(--kw-text-on-accent);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
}
/* ===== Practice nav ===== */
.practice-nav {
    margin-top: 16px;
}

.practice-new-session {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

.practice-new-session-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    color: var(--kw-text-muted);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.25;
    text-align: center;
    text-decoration: none;
    border-radius: var(--kw-radius-sm);
}

.practice-new-session-link:hover {
    color: var(--kw-text);
    background: var(--kw-surface-2);
}

/* ===== Review answers (exam results) ===== */
.question-answers--review {
    pointer-events: none;
}

    .question-answers--review .question-answer {
        cursor: default;
    }
/* ===== Answers review section (exam results) ===== */
.results-answers-section, .results-wrong-section {
    margin-top: 24px;
}

.results-answers-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.results-answers-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    color: var(--kw-text);
}

.results-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.results-filter-btn {
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--kw-radius-pill);
    border: 1px solid var(--kw-border);
    background: var(--kw-surface-1);
    color: var(--kw-text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}

    .results-filter-btn:hover {
        background: var(--kw-surface-2);
        color: var(--kw-text);
    }

    .results-filter-btn.active {
        background: var(--kw-brand);
        border-color: var(--kw-brand);
        color: var(--kw-text-on-accent);
        font-weight: 600;
    }

.results-answer-item, .results-wrong-item {
    margin-bottom: 20px;
    padding: 18px;
    background: var(--kw-surface-1);
    border-radius: 10px;
    border: 1px solid var(--kw-border);
    transition: border-color 0.15s ease;
}

.results-answer-item--correct {
    border-left: 4px solid var(--kw-success);
}

.results-answer-item--wrong {
    border-left: 4px solid var(--kw-danger);
}

.results-answer-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.results-answer-num {
    font-size: 12px;
    font-weight: 600;
    color: var(--kw-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.results-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--kw-radius-pill);
}

.results-badge--correct {
    background: var(--kw-success-light);
    color: var(--kw-success);
    border: 1px solid rgba(22, 163, 74, 0.2);
}

.results-badge--wrong {
    background: var(--kw-danger-light);
    color: var(--kw-danger);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.results-answer-q, .results-wrong-q {
    font-weight: 600;
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 14px;
    color: var(--kw-text);
}

.question-explanation--info {
    background: var(--kw-surface-2);
    border: 1px solid var(--kw-border);
}
/* ===== Dashboard ===== */
.dashboard {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}

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

.dashboard-stat-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--kw-brand);
}

.dashboard-stat-val--success {
    color: var(--kw-success);
}

.dashboard-stat-label {
    font-size: var(--kw-font-size-sm);
    color: var(--kw-text-secondary);
    margin-top: 4px;
}

.dashboard-section {
    margin-bottom: 32px;
}

.dashboard-section-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.dashboard-charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.dashboard-chart-container {
    background: var(--kw-surface-1);
    border: 1px solid var(--kw-border);
    border-radius: 10px;
    padding: 16px;
    height: 320px;
    position: relative;
}

.dashboard-chart-container--wide {
    height: 280px;
}

.dashboard-sessions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dashboard-session-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--kw-surface-1);
    border: 1px solid var(--kw-border);
    border-radius: 8px;
    font-size: var(--kw-font-size-sm);
}

.dashboard-mode-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 10px;
    flex-shrink: 0;
}

.dashboard-mode--practice {
    background: rgba(37,99,235,0.15);
    color: var(--kw-brand);
}

.dashboard-mode--exam {
    background: rgba(245,158,11,0.15);
    color: var(--kw-warning);
}

.dashboard-session-date {
    color: var(--kw-text-secondary);
}

.dashboard-session-score {
    font-weight: 600;
    margin-left: auto;
}

.dashboard-session-result {
    font-weight: 600;
    flex-shrink: 0;
}

.dashboard-result--pass {
    color: var(--kw-success);
}

.dashboard-result--fail {
    color: var(--kw-danger);
}

.dashboard-empty {
    text-align: center;
    padding: 48px 16px;
}

.dashboard-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.dashboard-empty-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.dashboard-empty-text {
    color: var(--kw-text-secondary);
    margin-bottom: 20px;
}

.dashboard-empty-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

@media (max-width: 767px) {
    .dashboard-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .dashboard-charts-row {
        grid-template-columns: 1fr;
    }

    .dashboard-session-row {
        flex-wrap: wrap;
    }

    .dashboard-session-score {
        margin-left: 0;
    }
}

/* ===== Practice Batch Transition & Summary ===== */

.practice-countdown-card {
    background: var(--kw-surface-1);
    border: 2px solid var(--kw-brand);
    border-radius: var(--kw-radius-lg);
    padding: 20px 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.practice-topic-toggle {
    margin-bottom: var(--kw-space-5);
}

.practice-summary-detail-title {
    margin: var(--kw-space-6) 0 var(--kw-space-3);
    font-size: var(--kw-font-size-question);
    font-weight: 600;
}

.practice-summary-actions {
    margin-top: var(--kw-space-6);
}

.countdown-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--kw-text);
}

.countdown-subtitle {
    font-size: 14px;
    color: var(--kw-text-secondary);
    margin-bottom: 14px;
}

.countdown-bar-container {
    width: 100%;
    height: 8px;
    background: var(--kw-surface-2);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.countdown-bar-fill {
    height: 100%;
    background: var(--kw-brand);
    width: 100%;
    transition: width 0.1s linear;
    border-radius: 4px;
}

.countdown-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}


/* Detailed results list in practice summary */
.batch-answer-list {
    margin: 12px 0 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.batch-answer-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    background: var(--kw-surface-1);
    border: 1px solid var(--kw-border);
    border-radius: var(--kw-radius-md);
    font-size: 14px;
    line-height: 1.5;
}

.batch-answer--correct {
    border-left: 4px solid var(--kw-success);
}

.batch-answer--wrong {
    border-left: 4px solid var(--kw-danger);
}

.batch-answer-icon {
    flex-shrink: 0;
    font-size: 16px;
    font-weight: 700;
}

.batch-answer--correct .batch-answer-icon {
    color: var(--kw-success);
}

.batch-answer--wrong .batch-answer-icon {
    color: var(--kw-danger);
}

.batch-answer-text {
    flex: 1;
    font-size: var(--kw-font-size-sm);
    color: var(--kw-text);
}