/* ========================================
   Shared Modal Styles
   Overlay, content, header, body, footer
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--cyan-30);
    border-radius: 8px;
    box-shadow: var(--glow-cyan), var(--card-shadow);
    width: 100%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink), var(--neon-cyan));
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px 18px 22px;
    border-bottom: 1px solid var(--cyan-10);
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}

.modal-body {
    padding: 20px 24px 24px;
}

.modal-body p {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.modal-body .error-message {
    margin-top: 0;
    padding: 0;
    background: none;
    border: none;
    min-height: 0;
}

.modal-body .error-message:not(:empty) {
    margin-top: 16px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--cyan-10);
    background: var(--bg-secondary);
}

.modal-footer .btn-primary,
.modal-footer .btn-secondary {
    width: auto;
    padding: 11px 24px;
    line-height: 1;
    font-size: 0.85rem;
}

/* 기본 폼 모달 스타일 */
.modal-form .modal-body {
    padding: 20px 24px;
}

.modal-form .form-group {
    margin-bottom: 16px;
}

.modal-form .form-group:last-of-type {
    margin-bottom: 0;
}

.modal-form .form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--neon-cyan);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.modal-form .form-group label::before {
    content: '>';
    margin-right: 6px;
    color: var(--neon-cyan);
}

.modal-form .form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--cyan-20);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.modal-form .form-group input::placeholder {
    color: var(--text-muted);
}

.modal-form .form-group input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 8px var(--cyan-20);
}

.modal-form .modal-footer {
    padding: 20px 24px;
}

.modal-form .modal-footer .btn-primary {
    flex: 1;
}

/* ========================================
   모달 탭 (계정 관리)
   ======================================== */
.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--cyan-10);
}

.modal-tab {
    flex: 1;
    padding: 14px 0;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.modal-tab:hover {
    color: var(--text-secondary);
}

.modal-tab.active {
    color: var(--neon-cyan);
    border-bottom-color: var(--neon-cyan);
}

/* 회원 탈퇴 약관 상자 */
.withdraw-terms-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--cyan-10);
    border-radius: 6px;
    padding: 16px 18px;
    margin-bottom: 20px;
}

.withdraw-terms-box p {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--neon-orange);
    margin: 0 0 12px 0;
}

.withdraw-terms-box ul {
    margin: 0;
    padding-left: 18px;
    list-style: disc;
}

.withdraw-terms-box ul li {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 동의 체크박스 */
.withdraw-agree {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.withdraw-agree input[type="checkbox"] {
    accent-color: var(--neon-pink);
    flex-shrink: 0;
}

/* 탈퇴 버튼 (위험 액션) */
.modal-footer .btn-danger {
    flex: 1;
    padding: 11px 24px;
    line-height: 1;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    font-weight: 600;
    background: var(--neon-pink);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.5px;
}

.modal-footer .btn-danger:hover:not(:disabled) {
    background: #e0245e;
    box-shadow: 0 0 12px rgba(224, 36, 94, 0.4);
}

.modal-footer .btn-danger:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* 클래스 수정 모달 */
.modal-edit-class .modal-body {
    padding: 20px 24px;
}

.modal-edit-class .form-group {
    margin-bottom: 20px;
}

.modal-edit-class .form-group:last-child {
    margin-bottom: 0;
}

.modal-edit-class .form-group label {
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.modal-edit-class .checkbox-list {
    background: transparent;
    border: none;
    padding: 0;
    max-height: 180px;
}

.modal-edit-class .teacher-checkbox-item {
    padding: 10px 12px;
    background: var(--cyan-03);
    border: 1px solid var(--cyan-10);
    border-radius: 6px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-edit-class .teacher-checkbox-item::before {
    display: none;
}

.modal-edit-class .teacher-checkbox-item input[type="checkbox"] {
    flex-shrink: 0;
}

.modal-edit-class .teacher-checkbox-item span {
    line-height: 1;
}

.modal-edit-class .teacher-checkbox-item:last-child {
    margin-bottom: 0;
}

.modal-edit-class .teacher-checkbox-item:hover {
    background: var(--cyan-08);
    border-color: var(--cyan-20);
}

/* 모달 푸터 깔끔한 스타일 */
.modal-footer-clean {
    background: transparent;
    border-top: 1px solid var(--cyan-10);
    padding: 16px 24px;
    gap: 10px;
}

/* 큰 모달 (메모 등) */
.modal-content.modal-large {
    max-width: 600px;
}

.modal-content.modal-large .modal-body {
    max-height: 60vh;
    overflow-y: auto;
}

/* ========================================
   MY MEMOS MODAL (메모 모아보기)
   ======================================== */
.my-memos-tabs {
    display: flex;
    gap: 16px;
    padding: 12px 24px 0;
}

.my-memos-tab {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
    cursor: pointer;
    padding-bottom: 8px;
    transition: color 0.2s ease;
    user-select: none;
}

.my-memos-tab:hover {
    color: var(--text-secondary);
}

.my-memos-tab.active {
    color: var(--text-primary);
    border-bottom: 2px solid var(--neon-cyan);
}

.my-memos-tab-panel {
    display: none;
}

.my-memos-tab-panel.active {
    display: block;
}

.my-memo-canvas {
    width: 100%;
    height: 200px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 6px;
    margin-top: 8px;
}

.my-memos-search-wrap {
    padding: 16px 24px;
}

.my-memos-search {
    width: 100%;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
}

.my-memos-search:focus {
    border-color: var(--neon-cyan);
}

.my-memos-search::placeholder {
    color: var(--text-muted);
}

.my-memos-body {
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
}

.my-memos-loading,
.my-memos-empty {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.my-memos-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.my-memo-item {
    padding: 16px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border-left: 3px solid var(--neon-purple);
    cursor: pointer;
    transition: all 0.2s ease;
}

.my-memo-item:hover {
    background: rgba(0, 0, 0, 0.5);
    border-left-color: var(--neon-cyan);
    transform: translateX(4px);
}

.my-memo-hidden {
    opacity: 0.55;
    border-left-color: #555;
    cursor: default;
}

.my-memo-hidden:hover {
    border-left-color: #555;
    transform: none;
}

.my-memo-hidden .my-memo-title {
    color: var(--text-muted);
}

.my-memo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.my-memo-title {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--neon-cyan);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.my-memo-header-right {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: 10px;
}

.my-memo-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.btn-memo-delete {
    padding: 0;
    background: transparent;
    border: none;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
    line-height: 90%;
}

.btn-memo-delete:hover {
    color: var(--neon-orange);
}

.my-memo-content {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}