/* 전역 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #475569;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* 화면 전환 */
.screen {
    display: none;
}

.screen.active {
    display: block;
}

/* 로그인 화면 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-box {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label i {
    margin-right: 8px;
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-height: 500px;
    overflow-y: auto;
    padding: 10px;
}

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.btn-primary {
    width: 100%;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #334155;
}

.btn-danger {
    padding: 10px 20px;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 12px;
    text-align: center;
    display: none;
}

.error-message.show {
    display: block;
}

/* 네비게이션 바 */
.navbar {
    background: var(--card-bg);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-left i {
    font-size: 24px;
    color: var(--primary-color);
}

.nav-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    color: var(--text-secondary);
    font-size: 14px;
}

.btn-logout {
    padding: 8px 16px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-logout:hover {
    background-color: #334155;
}

/* 메인 컨테이너 */
.main-container {
    display: flex;
    min-height: calc(100vh - 64px);
}

/* 사이드바 */
.sidebar {
    width: 260px;
    background: var(--card-bg);
    padding: 24px 0;
    box-shadow: var(--shadow);
}

.menu {
    list-style: none;
}

.menu-item {
    padding: 14px 24px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.menu-item i {
    font-size: 18px;
    width: 20px;
}

.menu-item:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

.menu-item.active {
    background-color: #eff6ff;
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

/* 콘텐츠 영역 */
.content {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.section-header h2 {
    font-size: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.header-actions button {
    white-space: nowrap;
}

.btn-master-only {
    display: none;
}

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* 통계 카드 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-card i {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card h3 {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

/* 검색 바 */
.search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 12px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-bar button {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    white-space: nowrap;
}

.search-bar button:hover {
    background-color: #1d4ed8;
}

/* 테이블 */
.table-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 11px; /* 폰트 크기 축소 */
}

thead {
    background-color: var(--bg-color);
}

th {
    padding: 10px 12px; /* 패딩 축소 */
    text-align: left;
    font-weight: 600;
    font-size: 11px; /* 헤더 폰트 크기 */
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

td {
    padding: 8px 12px; /* 패딩 축소 */
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 11px; /* 셀 폰트 크기 */
    line-height: 1.4;
}

tbody tr:hover {
    background-color: var(--bg-color);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* 작업 버튼 */
.action-btn {
    padding: 4px 8px; /* 버튼 크기 축소 */
    margin-right: 4px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px; /* 버튼 폰트 축소 */
    transition: opacity 0.3s;
    white-space: nowrap;
}

.action-btn:hover {
    opacity: 0.8;
}

.btn-view {
    background-color: var(--primary-color);
    color: white;
}

.btn-edit {
    background-color: var(--warning-color);
    color: white;
}

.btn-delete {
    background-color: var(--danger-color);
    color: white;
}

.btn-delete-all {
    background-color: var(--danger-color);
    color: white;
    border: 2px solid var(--danger-color);
}

.btn-delete-all:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

/* 선택 삭제 버튼 */
.btn-delete-selected {
    background-color: var(--danger-color);
    color: white;
    border: 2px solid var(--danger-color);
    padding: 8px 16px;
    font-size: 13px;
    margin-left: 10px;
    display: none; /* 기본적으로 숨김 */
}

.btn-delete-selected.show {
    display: inline-block;
}

.btn-delete-selected:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-delete-selected:disabled {
    background-color: #9ca3af;
    border-color: #9ca3af;
    cursor: not-allowed;
    opacity: 0.6;
}

/* 체크박스 스타일 */
.checkbox-cell {
    width: 40px;
    text-align: center;
}

.row-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.select-all-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* 선택 카운터 */
.selection-counter {
    display: inline-block;
    margin-left: 10px;
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow-y: auto;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-large {
    max-width: 1000px;
}

.modal-header {
    padding: 24px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid var(--border-color);
}

/* 탭 */
.input-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.tab-btn {
    padding: 10px 20px;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.help-text {
    background-color: #eff6ff;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--primary-color);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* AI 프롬프트 박스 */
.ai-prompt-box {
    background-color: #f0fdf4;
    border: 2px solid #86efac;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
}

.ai-prompt-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #15803d;
}

.ai-prompt-header i {
    font-size: 16px;
}

.btn-copy-prompt {
    margin-left: auto;
    padding: 4px 10px;
    background-color: white;
    border: 1px solid #86efac;
    border-radius: 4px;
    cursor: pointer;
    color: #15803d;
    font-size: 12px;
    transition: all 0.2s;
}

.btn-copy-prompt:hover {
    background-color: #dcfce7;
}

.ai-prompt-content {
    background-color: white;
    border: 1px solid #bbf7d0;
    border-radius: 6px;
    padding: 10px;
    font-size: 13px;
    line-height: 1.6;
    color: #166534;
    font-family: 'Noto Sans KR', sans-serif;
}

textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: monospace;
    font-size: 13px;
    resize: vertical;
    margin-bottom: 16px;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 상세정보 표시 */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
}

.detail-item {
    padding: 10px;
    background-color: var(--bg-color);
    border-radius: 6px;
}

.detail-item label {
    display: block;
    font-size: 10px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 600;
}

.detail-item value {
    display: block;
    font-size: 11px;
    color: var(--text-primary);
    word-break: break-word;
}

/* 로딩 */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.loading i {
    font-size: 48px;
    margin-bottom: 16px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

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

.empty-state i {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state p {
    font-size: 16px;
}

/* 수동 입력 폼 */
.manual-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-height: 60vh;
    overflow-y: auto;
    padding: 10px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-field input,
.form-field select,
.form-field textarea {
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-field textarea {
    resize: vertical;
    min-height: 80px;
}

/* 반응형 */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .content {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .search-bar {
        flex-direction: column;
    }

    .table-container {
        overflow-x: auto;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .manual-form {
        grid-template-columns: 1fr;
    }
}