/**
 * KAICE 강의실 프론트엔드 스타일
 *
 * 사이드바 공통 뼈대: sidebar/base.css (sidebar-styles.css 경유)
 * 강의실 전용 사이드바: sidebar/classroom.css (router.php에서 로드)
 */

/* ==================== 강의실 레이아웃: 항상 좌우 패딩 ==================== */
body.kaice-classroom-page .kaice-board-container.has-sidebar,
body.kaice-classroom-page .kaice-board-container.wide {
    padding: 0 20px;
}

/* ==================== 환영 메시지 ==================== */
.classroom-welcome-message {
    padding: 15px 0;
}

.classroom-welcome-message p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.6;
}

/* ==================== 통계 그리드 확장 ==================== */
.info-grid.four-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

@media (max-width: 992px) {
    .info-grid.four-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .info-grid.four-columns {
        grid-template-columns: 1fr;
    }
}

/* 통계 아이템 스타일 */
.stat-item .info-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.stat-icon-primary {
    background: var(--theme-main-color, #3498db);
    color: #fff;
}

.stat-icon-success {
    background: #27ae60;
    color: #fff;
}

.stat-icon-warning {
    background: #f39c12;
    color: #fff;
}

.stat-icon-danger {
    background: #e74c3c;
    color: #fff;
}

/* ==================== 카드 추가 스타일 ==================== */
/* 기본 list-card 스타일은 archive-list-card-styles.css 참고 */

.list-card.compact {
    padding: 12px 15px;
}

.list-card.compact .card-title {
    font-size: 0.95rem;
}

/* 공지 카드 내용 */
.card-notice-content {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--theme-border-color, #e0e0e0);
    line-height: 1.7;
    color: var(--theme-text-color, #333);
}

/* 교재 카드 추가 스타일 */
.card-description {
    margin-top: 8px;
    color: var(--theme-secondary-text-color, #666);
    font-size: 0.9rem;
    line-height: 1.5;
}

.card-chapters {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--theme-secondary-text-color, #666);
}

/* ==================== 배지 추가 스타일 ==================== */
.kaice-badge.status-pinned {
    background: #fff3cd;
    color: #856404;
}

.kaice-badge.status-pinned i {
    font-size: 0.7rem;
}


/* ==================== 버튼 비활성화 ==================== */
.btn-disabled {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--theme-border-color, #e0e0e0);
    color: var(--theme-secondary-text-color, #999);
    border-radius: 6px;
    cursor: not-allowed;
    font-size: 0.9rem;
}

.btn-disabled.small {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* ==================== 정보 박스 (접근 거부 페이지용) ==================== */
.kaice-info-box {
    background: var(--theme-bg-light, #f5f5f5);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: left;
}

.kaice-info-box h4 {
    margin: 0 0 12px 0;
    font-size: 1rem;
}

.kaice-info-box ol {
    margin: 0;
    padding-left: 20px;
}

.kaice-info-box li {
    margin-bottom: 6px;
    line-height: 1.6;
}

/* 버튼 그룹 */
.kaice-button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    margin-top: 20px;
}

@media (min-width: 576px) {
    .kaice-button-group {
        flex-direction: row;
        justify-content: center;
    }
}

/* ==================== empty state 작은 버전 ==================== */
.kaice-empty-state.small {
    padding: 30px 15px;
}

.kaice-empty-state.small .kaice-empty-icon {
    font-size: 2rem;
}

.kaice-empty-state.small p {
    font-size: 0.9rem;
}

/* ==================== 반응형 ==================== */

/* ==================== 수강생 관리 페이지 ==================== */
.student-search-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.student-search-row {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.student-search-row .student-search-box {
    flex: 1;
}

.student-search-row .btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}

@media (max-width: 576px) {
    .student-search-row {
        flex-direction: column;
    }

    .student-search-row .btn {
        width: 100%;
    }
}

.student-search-box {
    position: relative;
}

.student-search-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--theme-border-color, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
    font-size: var(--theme-font-size-body);
    font-family: var(--theme-font-normal);
    transition: border-color 0.2s ease;
}

.student-search-input:focus {
    outline: none;
    border-color: var(--theme-main-color);
}

.student-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--theme-border-color, #e0e0e0);
    border-top: none;
    border-radius: 0 0 var(--theme-button-radius, 8px) var(--theme-button-radius, 8px);
    max-height: 240px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid var(--theme-item-border, #f0f0f0);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover:not(.disabled):not(.selected) {
    background: var(--theme-info-bg, #f5f8fa);
}

.search-result-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--theme-item-bg, #f9f9f9);
}

.search-result-item.selected {
    background: var(--theme-main-color);
    color: white;
}

.search-result-item.selected .search-result-detail {
    color: rgba(255, 255, 255, 0.8);
}

.search-result-name {
    font-weight: 500;
    margin-bottom: 2px;
}

.search-result-detail {
    font-size: var(--theme-font-size-small);
    color: var(--theme-info-text, #888);
}

.search-no-results {
    padding: 16px;
    text-align: center;
    color: var(--theme-info-text, #888);
}

.selected-students-container {
    background: var(--theme-item-bg, #f9f9f9);
    padding: 16px;
    border-radius: var(--theme-button-radius, 8px);
}

.selected-students-label {
    font-size: var(--theme-font-size-small);
    color: var(--theme-info-text, #888);
    margin-bottom: 8px;
}

.selected-students-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.selected-student-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--theme-main-color);
    color: white;
    border-radius: 20px;
    font-size: var(--theme-font-size-small);
}

.remove-student-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.remove-student-btn:hover {
    opacity: 1;
}

.selected-students-actions {
    display: flex;
    gap: 8px;
}

/* 수강생 카드 상태 셀렉트 - kaice-select small 확장 */

/* ==================== (진도 표시는 cr-progress로 이동됨) ==================== */

/* ==================== 수강생 목록 (classroom 전용) ==================== */
/* 공통 스타일(마스킹, 일괄선택, 셀렉트)은 archive-list-card-styles.css 참조 */

/* ==================== 출석 체크 페이지 ==================== */

/* 출석일 탭 래퍼 */
.attendance-date-tabs-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--theme-item-border, #f0f0f0);
}

.attendance-date-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    flex: 1;
    padding: 4px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--theme-border-color) transparent;
}

.attendance-date-tabs::-webkit-scrollbar {
    height: 4px;
}

.attendance-date-tabs::-webkit-scrollbar-track {
    background: transparent;
}

.attendance-date-tabs::-webkit-scrollbar-thumb {
    background: var(--theme-border-color);
    border-radius: 2px;
}

/* 출석일 탭 버튼 */
.attendance-date-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 10px 16px;
    background: var(--theme-item-bg, #f9f9f9);
    border: 1px solid var(--theme-border-color, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
    font-family: var(--theme-font-normal);
    font-size: var(--theme-font-size-small);
    color: var(--theme-text-color);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: 80px;
    flex-shrink: 0;
}

.attendance-date-tab:hover {
    background: var(--theme-info-bg, #f5f8fa);
    border-color: var(--theme-main-color);
}

.attendance-date-tab.active {
    background: var(--theme-main-color);
    border-color: var(--theme-main-color);
    color: white;
}

.attendance-date-tab.today {
    border-color: var(--theme-color-success);
}

.attendance-date-tab.today:not(.active) .tab-date {
    color: var(--theme-color-success);
    font-weight: bold;
}

.attendance-date-tab.past:not(.active) {
    opacity: 0.7;
}

.attendance-date-tab.extra {
    border-style: dashed;
}

.attendance-date-tab .tab-date {
    font-family: var(--theme-font-bold);
    font-size: var(--theme-font-size-body);
}

.attendance-date-tab .tab-label {
    font-size: 0.75rem;
    opacity: 0.8;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.attendance-date-tab.active .tab-label {
    opacity: 0.9;
}

/* 날짜 없음 메시지 */
.attendance-no-dates {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: var(--theme-info-bg, #f5f8fa);
    border-radius: var(--theme-button-radius, 8px);
    color: var(--theme-info-text);
    font-size: var(--theme-font-size-body);
}

.attendance-no-dates i {
    color: var(--theme-main-color);
}

/* 출석일 추가 폼 */
.attendance-add-date-form {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 16px;
    background: var(--theme-info-bg, #f5f8fa);
    border-radius: var(--theme-button-radius, 8px);
}

.attendance-add-date-form .form-group {
    margin: 0;
    min-width: 180px;
}

/* 선택된 날짜 표시 */
.attendance-selected-date {
    margin-bottom: 16px;
    font-size: var(--theme-font-size-subtitle);
    font-family: var(--theme-font-bold);
    color: var(--theme-text-color);
}

/* 출석 아이템 카드 */
.attendance-item {
    transition: border-color 0.2s ease;
}

.attendance-item:hover {
    border-color: var(--theme-main-color);
}

/* 클릭 가능한 출석 카드 */
.attendance-item.clickable .list-card-content {
    cursor: pointer;
}

.attendance-item.clickable .list-card-content:hover .card-title {
    color: var(--theme-main-color);
}

.attendance-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.attendance-status-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.attendance-time-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 기존 time input 스타일 (fallback) */
.attendance-time-input {
    padding: 6px 10px;
    border: 1px solid var(--theme-border-color, #e0e0e0);
    border-radius: var(--theme-button-radius, 6px);
    font-size: var(--theme-font-size-small);
    font-family: var(--theme-font-normal);
    width: 100px;
}

.attendance-time-input:focus {
    outline: none;
    border-color: var(--theme-main-color);
}

/* 저장 섹션 */
.attendance-save-section {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--theme-item-border, #f0f0f0);
}

.save-status {
    font-size: var(--theme-font-size-body);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 출석 상태별 셀렉트 배경색 (선택 사항) */
.attendance-status-select option[value="present"] { color: #27ae60; }
.attendance-status-select option[value="absent"] { color: #e74c3c; }
.attendance-status-select option[value="late"] { color: #f39c12; }
.attendance-status-select option[value="early_leave"] { color: #f39c12; }
.attendance-status-select option[value="excused"] { color: #3498db; }

/* 출석 현황 테이블 */
.attendance-summary-table-wrapper {
    overflow-x: auto;
}

.attendance-summary-table-wrapper .top-header-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
}

.attendance-summary-table-wrapper .top-header-table td {
    padding: 12px 8px;
    font-size: var(--theme-font-size-body);
}

/* 반응형 */
@media (max-width: 768px) {
    .attendance-date-tabs-wrapper {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .attendance-date-tabs-wrapper > .btn-light {
        width: auto;
        align-self: flex-start;
    }

    .attendance-add-date-form {
        flex-wrap: wrap;
    }

    .attendance-add-date-form .form-group {
        min-width: 140px;
    }

    .attendance-actions {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
    }

    .attendance-time-group {
        flex: 1;
    }

    .attendance-time-input {
        flex: 1;
        min-width: 0;
    }

}

@media (max-width: 576px) {
    .attendance-date-tab {
        padding: 8px 12px;
        min-width: 70px;
    }

    .attendance-date-tab .tab-date {
        font-size: var(--theme-font-size-small);
    }

    .attendance-date-tab .tab-label {
        display: none;
    }

    .attendance-add-date-form {
        flex-direction: column;
        align-items: stretch;
    }

    .attendance-add-date-form .form-group {
        width: 100%;
    }

    .attendance-item .list-card-content,
    .attendance-item .list-card-actions {
        width: 100%;
    }

    .attendance-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .attendance-status-group {
        width: 100%;
    }

    .attendance-status-group .kaice-select {
        width: 100%;
    }

    .attendance-time-group {
        width: 100%;
    }
}

/* ==================== 강의 네비게이션 버튼 ==================== */
/* 모바일에서 텍스트 숨기고 아이콘만 표시 */
@media (max-width: 576px) {
    .btn-nav span {
        display: none;
    }

    .btn-nav {
        padding: 10px 12px !important;
    }
}

/* ==================== 첨부파일 목록 (편집 페이지) ==================== */
.file-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.file-list .file-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--theme-info-bg, #f5f8fa);
    border: 1px solid var(--theme-item-border, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
    font-size: var(--theme-font-size-body, 14px);
    font-family: var(--theme-font-normal);
}

.file-list .file-item i {
    color: var(--theme-main-color, #408090);
    flex-shrink: 0;
}

.file-list .file-item .file-name {
    color: var(--theme-text-color, #333);
    word-break: break-all;
}

.file-list .file-item .file-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--theme-hint-text-color, #999);
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 50%;
    flex-shrink: 0;
}

.file-list .file-item .file-remove:hover {
    color: var(--theme-danger-button-bg, #dc3545);
    background: rgba(220, 53, 69, 0.1);
}

/* ==================== 유튜브 영상 (편집 페이지) ==================== */
.youtube-video-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 16px;
    margin-bottom: 12px;
    background: var(--theme-color-background, #fff);
    border: 1px solid var(--theme-item-border, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
}

.youtube-video-item .youtube-video-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

.youtube-video-item .youtube-video-fields {
    flex: 1;
}

.youtube-video-item .youtube-video-fields .form-group {
    margin-bottom: 8px;
}

.youtube-video-item .youtube-video-fields .form-group:last-child {
    margin-bottom: 0;
}

.youtube-video-item .youtube-sortable-handle,
.youtube-video-item .youtube-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--theme-item-border, #e0e0e0);
    background: white;
    color: var(--theme-hint-text-color, #999);
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: var(--theme-button-radius, 8px);
    flex-shrink: 0;
}

.youtube-video-item .youtube-sortable-handle {
    cursor: grab;
}

.youtube-video-item .youtube-sortable-handle:active {
    cursor: grabbing;
}

.youtube-video-item .youtube-sortable-handle:hover {
    color: var(--theme-main-color, #408090);
    border-color: var(--theme-main-color, #408090);
    background: rgba(64, 128, 144, 0.1);
}

.youtube-video-item .youtube-remove:hover {
    color: var(--theme-danger-button-bg, #dc3545);
    border-color: var(--theme-danger-button-bg, #dc3545);
    background: rgba(220, 53, 69, 0.1);
}

.youtube-sortable-ghost {
    opacity: 0.4;
    background: var(--theme-info-bg, #f5f8fa);
}

#youtube-videos-container:empty {
    display: none;
}

#add-youtube-btn {
    margin-top: 0;
}

/* ==================== 유튜브 영상 임베드 (목록 페이지) ==================== */
.resource-youtube-videos {
    margin-top: 16px;
}

.youtube-embed-item {
    margin-bottom: 16px;
}

.youtube-embed-item:last-child {
    margin-bottom: 0;
}

.youtube-embed-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 비율 */
    height: 0;
    overflow: hidden;
    border-radius: var(--theme-button-radius, 8px);
    background: #000;
}

.youtube-embed-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.youtube-embed-description {
    margin-top: 8px;
    padding: 12px;
    background: var(--theme-color-background, #fff);
    border: 1px solid var(--theme-item-border, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
    font-size: var(--theme-font-size-body, 14px);
    color: var(--theme-text-color, #333);
    line-height: 1.6;
}

/* 자료 콘텐츠 더보기/접기 */
.resource-expand-btn,
.resource-collapse-btn {
    display: inline-block;
    margin-top: 12px;
    color: var(--theme-main-color, #408090);
    font-size: var(--theme-font-size-body, 14px);
    text-decoration: none;
    cursor: pointer;
}

.resource-expand-btn:hover,
.resource-collapse-btn:hover {
    text-decoration: underline;
}

/* ==================== 강의실 모달 (교재/소그룹 등) ==================== */
.classroom-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    display: none;
    align-items: center;
    justify-content: center;
}
.classroom-modal.show {
    display: flex;
}
.classroom-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}
.classroom-modal-content {
    position: relative;
    background: var(--theme-bg-color, #fff);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.classroom-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--theme-border-color);
}
.classroom-modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
}
.classroom-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--theme-text-secondary);
}
.classroom-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
    background: var(--theme-bg-color, #fff);
    display: block;
}
.classroom-modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--theme-border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* 모달 검색 결과 */
.classroom-modal-results {
    margin-top: 1rem;
    overflow-y: auto;
}

/* 모달 내 선택 가능한 카드 */
.classroom-modal .list-card {
    cursor: pointer;
}
.classroom-modal .list-card.selected {
    border-color: var(--theme-main-color);
    background: var(--theme-info-bg, #f5f8fa);
}

/* ==================== 소그룹 칩 선택기 ==================== */
.kaice-group-chip-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 6px 8px;
    min-height: 55px;
    border: 1px solid var(--theme-item-border, #e0e0e0);
    border-radius: var(--theme-button-radius, 8px);
    background: var(--theme-color-white, #fff);
    align-items: center;
}
.kaice-group-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 10px 14px;
    border-radius: var(--theme-button-radius, 8px);
    font-size: var(--theme-font-size-medium, 0.875rem);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
    border: 1px solid transparent;
    background: var(--theme-item-bg, #f5f7fa);
    color: var(--theme-hint-text-color, #999);
    font-family: var(--theme-font-normal, 'S-CoreDream-3', sans-serif);
}
.kaice-group-chip:hover {
    border-color: var(--theme-main-color, #408090);
    background: var(--theme-info-bg, #e7f3ff);
}
.kaice-group-chip.selected {
    background: var(--theme-info-bg, #e7f3ff);
    color: var(--theme-main-color, #408090);
    border-color: var(--theme-main-color, #408090);
    font-family: var(--theme-font-bold, 'S-CoreDream-5', sans-serif);
}
.kaice-group-chip.selected:hover {
    opacity: 0.85;
}
.kaice-group-chip .chip-remove {
    display: none;
    margin-left: 0.125rem;
    font-size: 0.75rem;
}
.kaice-group-chip.selected .chip-remove {
    display: inline;
}
.kaice-group-chip-selector .chip-all-label {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: var(--theme-button-radius, 8px);
    font-size: var(--theme-font-size-medium, 0.875rem);
    font-family: var(--theme-font-bold, 'S-CoreDream-5', sans-serif);
    color: var(--theme-main-color, #408090);
    background: var(--theme-info-bg, #e7f3ff);
    border: 1px solid var(--theme-main-color, #408090);
}

/* ==================== 홈 대시보드 ==================== */

/* 콘텐츠 영역 기준 반응형 (사이드바 유무와 무관) */
.kaice-board-container {
    container-type: inline-size;
}

/* 통계 그리드 3열 */
.info-grid.three-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

@container (max-width: 600px) {
    .info-grid.three-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@container (max-width: 400px) {
    .info-grid.three-columns {
        grid-template-columns: 1fr;
    }
}

/* 통계 서브 텍스트 */
.info-sub {
    font-size: var(--theme-font-size-small, 0.8rem);
    color: var(--theme-hint-text-color, #999);
    margin-top: 2px;
}

/* 홈 영상 그리드 */
.home-video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@container (max-width: 600px) {
    .home-video-grid {
        grid-template-columns: 1fr;
    }
}

.home-video-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--theme-item-bg, #f9f9f9);
    border: 1px solid var(--theme-item-border, #f0f0f0);
    border-radius: var(--theme-button-radius, 8px);
    text-decoration: none;
    color: var(--theme-text-color, #333);
    transition: all 0.2s ease;
    min-width: 0;
}

.home-video-card:hover {
    border-color: var(--theme-main-color);
    background: var(--theme-info-bg, #f5f8fa);
}

.home-video-card-icon {
    flex-shrink: 0;
    font-size: 1.5rem;
    color: var(--theme-main-color);
    width: 36px;
    text-align: center;
}

.home-video-card-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.home-video-card-meta {
    display: flex;
    gap: 6px;
}

.home-video-session,
.home-video-lesson {
    font-size: var(--theme-font-size-small, 0.8rem);
    color: var(--theme-info-text, #888);
}

.home-video-card-title {
    font-size: var(--theme-font-size-body, 14px);
    font-family: var(--theme-font-bold);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.home-video-card-progress {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 4px;
}

.home-video-progress-bar {
    flex: 1;
    height: 4px;
    background: var(--theme-border-color, #e0e0e0);
    border-radius: 2px;
    overflow: hidden;
}

.home-video-progress-fill {
    height: 100%;
    background: var(--theme-main-color);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.home-video-progress-fill.completed {
    background: var(--theme-color-success, #27ae60);
}

.home-video-progress-text {
    font-size: 0.75rem;
    color: var(--theme-info-text, #888);
    white-space: nowrap;
}

/* 홈 설문/퀴즈/과제 목록 */
.home-form-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.home-form-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--theme-item-bg, #f9f9f9);
    border: 1px solid var(--theme-item-border, #f0f0f0);
    border-radius: var(--theme-button-radius, 8px);
    text-decoration: none;
    color: var(--theme-text-color, #333);
    transition: all 0.2s ease;
}

.home-form-item:hover {
    border-color: var(--theme-main-color);
    background: var(--theme-info-bg, #f5f8fa);
}

.home-form-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: var(--theme-main-color, #408090);
    color: #fff;
}

.home-form-icon.quiz {
    background: #f39c12;
}

.home-form-icon.assignment {
    background: #e74c3c;
}

.home-form-content {
    flex: 1;
    min-width: 0;
}

.home-form-title {
    font-family: var(--theme-font-bold);
    font-size: var(--theme-font-size-body, 14px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.home-form-meta {
    display: flex;
    gap: 12px;
    margin-top: 4px;
    font-size: var(--theme-font-size-small, 0.8rem);
    color: var(--theme-info-text, #888);
}

.home-form-status {
    flex-shrink: 0;
}

@container (max-width: 400px) {
    .home-form-item {
        gap: 10px;
        padding: 12px 14px;
    }

    .home-form-icon {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
    }
}