/* 오답노트 + 북마크 공통 스타일 */

/* 자격증 구분 탭 */
.wrong-note-cert-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.wrong-note-cert-btn {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
    text-align: center;
}

.wrong-note-cert-btn.active {
    border-color: var(--penguin-navy);
    background: var(--penguin-navy);
    color: white;
}

.wrong-note-cert-btn:not(.active):hover {
    border-color: var(--penguin-navy);
    color: var(--penguin-navy);
}

.wrong-note-cert-count {
    display: inline-block;
    min-width: 18px;
    padding: 1px 6px;
    border-radius: 9px;
    font-size: 11px;
    font-weight: 700;
    margin-left: 4px;
}

.wrong-note-cert-btn.active .wrong-note-cert-count {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.wrong-note-cert-btn:not(.active) .wrong-note-cert-count {
    background: #f1f5f9;
    color: var(--text-secondary);
}

/* 컨트롤 바 */
.wrong-note-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
    background: white;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.wrong-note-filter-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.wrong-note-filter-btn {
    padding: 6px 14px;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 20px;
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 13px;
}

.wrong-note-filter-btn.active {
    background: var(--penguin-navy);
    color: white;
    border-color: var(--penguin-navy);
}

.wrong-note-controls-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.wrong-note-stats-summary {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 액션 바 (선택 모드) */
.wrong-note-action-bar {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    padding: 12px 16px;
    background: var(--penguin-navy);
    border-radius: 12px;
    color: white;
}

.wrong-note-action-bar.visible {
    display: flex;
}

.wrong-note-action-bar__left {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.wrong-note-action-bar__btn {
    padding: 8px 18px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.wrong-note-action-bar__btn--quiz {
    background: var(--penguin-skyblue);
    color: white;
}

.wrong-note-action-bar__btn--quiz:hover {
    background: #4da0b8;
}

.wrong-note-action-bar__btn--quiz:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

.wrong-note-action-bar__btn--resolve {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.wrong-note-action-bar__btn--resolve:hover {
    background: rgba(255, 255, 255, 0.25);
}

.wrong-note-action-bar__btn--cancel {
    background: none;
    color: rgba(255, 255, 255, 0.7);
    padding: 8px 12px;
}

.wrong-note-select-mode-btn {
    padding: 6px 14px;
    border: 1px solid var(--penguin-navy);
    border-radius: 8px;
    background: white;
    color: var(--penguin-navy);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}

.wrong-note-select-mode-btn:hover {
    background: var(--penguin-navy);
    color: white;
}

/* 과목별 섹션 */
.wn-subject-section {
    margin-bottom: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.wn-subject-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}

.wn-subject-section__header:hover {
    background: #f1f5f9;
}

.wn-subject-section__left {
    display: flex;
    align-items: center;
    gap: 6px;
}

.wn-subject-section__toggle {
    font-size: 12px;
    color: #94a3b8;
    transition: transform 0.2s;
    display: inline-block;
}

.wn-subject-section.collapsed .wn-subject-section__toggle {
    transform: rotate(-90deg);
}

.wn-subject-section__title {
    font-size: 14px;
    font-weight: 700;
    color: var(--penguin-navy);
}

.wn-subject-section__count {
    font-size: 12px;
    color: var(--text-secondary);
    background: #e2e8f0;
    padding: 2px 8px;
    border-radius: 10px;
}

/* 접기/펼치기 애니메이션 */
.wn-subject-section__list {
    overflow: hidden;
    max-height: 2000px;
    transition: max-height 0.3s ease;
}

.wn-subject-section.collapsed .wn-subject-section__list {
    max-height: 0;
}

.wn-subject-section.collapsed .wn-subject-section__header {
    border-bottom-color: transparent;
    border-radius: 10px;
}

/* 컴팩트 리스트 아이템 */
.wrong-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: white;
    border-bottom: 1px solid #f1f5f9;
    cursor: pointer;
    transition: background 0.15s;
}

.wrong-item:last-child {
    border-bottom: none;
    border-radius: 0 0 10px 10px;
}

.wrong-item:hover {
    background: #f8fafc;
}

.wrong-item__checkbox {
    display: none;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border: 2px solid #cbd5e1;
    border-radius: 4px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    transition: all 0.15s;
}

.wrong-item__checkbox:checked {
    background: var(--penguin-navy);
    border-color: var(--penguin-navy);
}

.wrong-item__checkbox:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.select-mode .wrong-item__checkbox {
    display: block;
}

.wrong-item__number {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--penguin-navy);
}

.wrong-item__info {
    flex: 1;
    min-width: 0;
}

.wrong-item__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.wrong-item__meta {
    display: flex;
    gap: 8px;
    margin-top: 3px;
    font-size: 12px;
    color: var(--text-secondary, #94a3b8);
}

.wrong-item__retry-count {
    color: #ef4444;
    font-weight: 600;
}

.wrong-item__arrow {
    flex-shrink: 0;
    color: #cbd5e1;
    font-size: 14px;
}

.select-mode .wrong-item__arrow {
    display: none;
}

/* 빈 상태 */
.wrong-note-empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.wrong-note-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

/* 상세 모달 */
.wrong-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 16px;
}

.wrong-modal-overlay.open {
    display: flex;
}

.wrong-modal {
    background: white;
    padding: 24px;
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.wrong-modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.wrong-modal__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--penguin-navy);
}

.wrong-modal__close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #94a3b8;
    padding: 4px;
}

.wrong-modal__question {
    font-weight: 600;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.wrong-modal__question img {
    max-width: 100%;
    border-radius: 8px;
    margin: 8px 0;
}

.wrong-modal__option {
    margin: 6px 0;
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
}

.wrong-modal__option.correct {
    background: #f0fdf4;
    border-color: #86efac;
    font-weight: 600;
}

.wrong-modal__option.user-wrong {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
    font-weight: 600;
}

.wrong-modal__explanation {
    background: #f8fafc;
    padding: 14px;
    border-radius: 8px;
    margin-top: 16px;
    font-size: 13px;
    line-height: 1.6;
    color: #475569;
}

.wrong-modal__explanation strong {
    display: block;
    margin-bottom: 6px;
    color: var(--penguin-navy);
}

.wrong-modal__actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.wrong-modal__btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.wrong-modal__btn--resolve {
    background: var(--penguin-navy);
    color: white;
}

.wrong-modal__btn--close {
    background: #f1f5f9;
    color: var(--text-secondary);
}

@media (max-width: 480px) {
    .wrong-note-controls-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .wrong-item {
        padding: 10px 12px;
        gap: 10px;
    }

    .wrong-item__title {
        font-size: 13px;
    }

    .wrong-note-action-bar {
        flex-direction: column;
        gap: 10px;
    }

    .wrong-note-action-bar__left {
        width: 100%;
        justify-content: space-between;
    }
}

/* ===== 다크모드 ===== */
[data-theme="dark"] .wrong-note-cert-btn {
    background: #181a1e;
    border-color: #2a2a30;
    color: #a0a5b0;
}

[data-theme="dark"] .wrong-note-cert-btn.active {
    background: var(--penguin-navy);
    border-color: var(--penguin-navy);
    color: white;
}

[data-theme="dark"] .wrong-note-cert-btn:not(.active) .wrong-note-cert-count {
    background: #2a2a30;
    color: #808590;
}

[data-theme="dark"] .wrong-note-controls-bar {
    background: #181a1e;
    border-color: #2a2a30;
}

[data-theme="dark"] .wrong-note-filter-btn {
    background: #1a1a1e;
    color: #a0a5b0;
    border-color: #2a2a30;
}

[data-theme="dark"] .wrong-note-filter-btn.active {
    background: var(--penguin-navy);
    color: white;
}

[data-theme="dark"] .wrong-note-select-mode-btn {
    background: #1a1a1e;
    color: #c0c5d0;
    border-color: #2a2a30;
}

[data-theme="dark"] .wrong-note-select-mode-btn:hover {
    background: var(--penguin-navy);
    color: white;
}

[data-theme="dark"] .wn-subject-section {
    background: #181a1e;
    box-shadow: none;
}

[data-theme="dark"] .wn-subject-section__header {
    background: #1e2024;
    border-bottom-color: #2a2a30;
}

[data-theme="dark"] .wn-subject-section__header:hover {
    background: #232528;
}

[data-theme="dark"] .wn-subject-section__toggle {
    color: #606570;
}

[data-theme="dark"] .wn-subject-section__title {
    color: #e0e4ea;
}

[data-theme="dark"] .wn-subject-section__count {
    background: #2a2a30;
    color: #a0a5b0;
}

[data-theme="dark"] .wrong-item {
    background: #181a1e;
    border-bottom-color: #2a2a30;
}

[data-theme="dark"] .wrong-item:hover {
    background: #1e2024;
}

[data-theme="dark"] .wrong-item__number {
    background: #2a2a30;
    color: var(--penguin-skyblue);
}

[data-theme="dark"] .wrong-item__title {
    color: #e0e4ea;
}

[data-theme="dark"] .wrong-modal {
    background: #1a1c20;
}

[data-theme="dark"] .wrong-modal__title {
    color: var(--penguin-skyblue);
}

[data-theme="dark"] .wrong-modal__question {
    color: #e0e4ea;
}

[data-theme="dark"] .wrong-modal__option {
    border-color: #2a2a30;
    color: #d0d0d4;
}

[data-theme="dark"] .wrong-modal__option.correct {
    background: rgba(34, 197, 94, 0.1);
    border-color: #22c55e;
}

[data-theme="dark"] .wrong-modal__option.user-wrong {
    background: rgba(239, 68, 68, 0.15);
    border-color: #ef4444;
    color: #fca5a5;
}

[data-theme="dark"] .wrong-modal__explanation {
    background: #0f1012;
    color: #a0a5b0;
}

[data-theme="dark"] .wrong-modal__btn--close {
    background: #2a2a30;
    color: #c0c5d0;
}