/**
 * 소리튠 관리자 - 메인 스타일시트
 * Soritune Admin Main Stylesheet
 */

/* ========================================
   CSS 변수 정의
   ======================================== */
:root {
    /* 색상 */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;

    /* 배경색 */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-dark: #1e293b;
    --bg-sidebar: #0f172a;

    /* 텍스트 색상 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-light: #f8fafc;

    /* 테두리 */
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;

    /* 그림자 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* 레이아웃 */
    --sidebar-width: 260px;
    --header-height: 60px;
    --spacing-unit: 8px;

    /* 폰트 */
    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* 트랜지션 */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* 다크 모드 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
}

/* ========================================
   리셋 및 기본 스타일
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   레이아웃
   ======================================== */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* 사이드바 */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-light);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
}

.sidebar-logo h1 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    padding: 8px 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.nav-item.active {
    background: rgba(79, 70, 229, 0.2);
    color: #fff;
    border-left-color: var(--primary-color);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: var(--font-size-lg);
}

.nav-item .badge {
    margin-left: auto;
    padding: 2px 8px;
    font-size: var(--font-size-xs);
    background: var(--primary-color);
    border-radius: 10px;
}

/* 메인 콘텐츠 영역 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 헤더 */
.header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .separator {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
}

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

.header-icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.header-icon-btn:hover {
    background: var(--bg-primary);
    color: var(--primary-color);
}

.header-icon-btn .badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    background: var(--danger-color);
    color: #fff;
    border-radius: 50%;
}

.user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 12px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-dropdown-toggle:hover {
    border-color: var(--primary-color);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-info {
    text-align: left;
}

.user-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.user-dropdown.active .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.user-dropdown-menu a:hover {
    background: var(--bg-primary);
}

.user-dropdown-menu a i {
    width: 20px;
    color: var(--text-muted);
}

.user-dropdown-menu .divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

/* 페이지 콘텐츠 */
.page-content {
    flex: 1;
    padding: 24px;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    margin: 0 0 8px 0;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.page-header .description {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ========================================
   카드
   ======================================== */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* ========================================
   버튼
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

.btn-success {
    background: var(--success-color);
    color: #fff;
}

.btn-success:hover:not(:disabled) {
    background: #16a34a;
}

.btn-danger {
    background: var(--danger-color);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-warning {
    background: var(--warning-color);
    color: #fff;
}

.btn-warning:hover:not(:disabled) {
    background: #d97706;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline-primary:hover:not(:disabled) {
    background: var(--primary-color);
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--font-size-base);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}

/* ========================================
   폼 요소
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

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

.form-group .required {
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:disabled {
    background: var(--bg-primary);
    cursor: not-allowed;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-control-sm {
    padding: 6px 10px;
    font-size: var(--font-size-xs);
}

.form-control-lg {
    padding: 14px 18px;
    font-size: var(--font-size-base);
}

.help-text {
    display: block;
    margin-top: 6px;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.input-group {
    display: flex;
}

.input-group .form-control {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.input-group .btn {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* 체크박스/라디오 */
.checkbox-wrapper,
.radio-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-wrapper input[type="checkbox"],
.radio-wrapper input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.checkbox-wrapper label,
.radio-wrapper label {
    margin: 0;
    cursor: pointer;
    font-weight: 400;
}

/* ========================================
   테이블
   ======================================== */
.table-responsive {
    overflow-x: auto;
    margin: 0 -20px;
    padding: 0 20px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-primary);
    white-space: nowrap;
}

.table th.sortable {
    cursor: pointer;
    user-select: none;
}

.table th.sortable:hover {
    background: var(--border-color);
}

.table th.sortable i {
    margin-left: 4px;
    font-size: var(--font-size-xs);
    opacity: 0.5;
}

.table th.sortable.asc i::before {
    content: "\f0de";
}

.table th.sortable.desc i::before {
    content: "\f0dd";
}

.table tbody tr:hover {
    background: var(--bg-primary);
}

.table .check-column {
    width: 40px;
}

.table .actions-column {
    width: 100px;
    text-align: center;
    white-space: nowrap;
}

.table .empty-message {
    text-align: center;
    padding: 48px 16px;
    color: var(--text-muted);
}

.table .empty-message i {
    display: block;
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
}

/* 데이터 테이블 */
.data-table {
    margin-top: 16px;
}

.data-table .btn-edit {
    color: var(--info-color);
    background: rgba(59, 130, 246, 0.1);
    border: none;
    margin-right: 4px;
}

.data-table .btn-edit:hover {
    background: var(--info-color);
    color: #fff;
}

.data-table .btn-delete {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
    border: none;
}

.data-table .btn-delete:hover {
    background: var(--danger-color);
    color: #fff;
}

/* ========================================
   도구바
   ======================================== */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
}

.search-box {
    display: flex;
    flex: 1;
    max-width: 400px;
}

.search-box .form-control {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.search-box .btn-search {
    background: var(--primary-color);
    color: #fff;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    padding: 10px 14px;
}

.filters {
    display: flex;
    gap: 8px;
}

.filters .filter-select {
    width: auto;
    min-width: 150px;
}

.toolbar .actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

/* ========================================
   페이징
   ======================================== */
.pagination-wrapper {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 0;
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
}

.page-size-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.page-size-selector .form-control {
    width: auto;
    padding: 6px 30px 6px 10px;
}

.page-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    gap: 4px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-link.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* ========================================
   배지
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: 20px;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary-color);
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-secondary {
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

/* ========================================
   알림 메시지
   ======================================== */
.alert {
    padding: 16px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #166534;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #991b1b;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #92400e;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #1e40af;
}

/* ========================================
   모달
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-lg {
    max-width: 900px;
}

.modal-xl {
    max-width: 1200px;
}

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

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-primary);
    color: var(--danger-color);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ========================================
   탭
   ======================================== */
.tabs {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.tabs-list {
    display: flex;
    gap: 0;
}

.tab-button {
    padding: 12px 24px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

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

/* ========================================
   스탯 카드
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    font-size: var(--font-size-xl);
}

.stat-icon.primary {
    background: var(--primary-light);
    color: var(--primary-color);
}

.stat-icon.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
}

.stat-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.stat-icon.info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

.stat-content h3 {
    margin: 0 0 4px 0;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-content p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.stat-change {
    margin-top: 4px;
    font-size: var(--font-size-xs);
}

.stat-change.positive {
    color: var(--success-color);
}

.stat-change.negative {
    color: var(--danger-color);
}

/* ========================================
   파일 업로드
   ======================================== */
.file-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 48px;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.file-upload-zone:hover,
.file-upload-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.file-upload-zone i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.file-upload-zone h4 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.file-upload-zone p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.file-upload-zone input[type="file"] {
    display: none;
}

.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    margin-bottom: 8px;
}

.file-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.file-size {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.file-item .btn-remove {
    color: var(--danger-color);
    background: none;
    border: none;
    padding: 4px 8px;
    cursor: pointer;
}

/* ========================================
   프로그레스 바
   ======================================== */
.progress {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width var(--transition-base);
}

.progress-bar.success {
    background: var(--success-color);
}

.progress-bar.warning {
    background: var(--warning-color);
}

.progress-bar.danger {
    background: var(--danger-color);
}

/* ========================================
   로딩 스피너
   ======================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.loading-overlay .spinner {
    margin-bottom: 16px;
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ========================================
   CSV 컬럼 매핑
   ======================================== */
.column-mapping-table {
    width: 100%;
    margin-top: 20px;
}

.column-mapping-table th,
.column-mapping-table td {
    padding: 12px;
    border: 1px solid var(--border-color);
}

.column-mapping-table th {
    background: var(--bg-primary);
    font-weight: 500;
}

.column-preview {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 4px;
    max-height: 60px;
    overflow: hidden;
}

.type-suggestion {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: var(--font-size-xs);
    margin-left: 8px;
}

/* ========================================
   API 키 카드
   ======================================== */
.api-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.api-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    transition: all var(--transition-fast);
}

.api-card:hover {
    box-shadow: var(--shadow-md);
}

.api-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.api-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.api-card-icon img {
    width: 32px;
    height: 32px;
}

.api-card-title h4 {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
}

.api-card-status {
    margin-top: 4px;
}

.api-card-body {
    margin-bottom: 16px;
}

.api-key-input-group {
    display: flex;
    gap: 8px;
}

.api-key-input-group .form-control {
    flex: 1;
    font-family: monospace;
}

.api-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.api-usage {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

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

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

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

.login-header img {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
}

.login-header h1 {
    margin: 0 0 8px 0;
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
}

.login-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.login-form .form-group {
    margin-bottom: 24px;
}

.login-form .btn {
    width: 100%;
    padding: 14px;
    font-size: var(--font-size-base);
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   반응형
   ======================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        max-width: 100%;
    }

    .filters {
        flex-wrap: wrap;
    }

    .toolbar .actions {
        margin-left: 0;
        justify-content: flex-end;
    }

    .pagination-wrapper {
        flex-direction: column;
        align-items: center;
    }

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

    .modal {
        width: 95%;
        margin: 20px;
    }

    .login-card {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .page-content {
        padding: 16px;
    }

    .card-body {
        padding: 16px;
    }

    .table th,
    .table td {
        padding: 8px 12px;
    }

    .user-dropdown-toggle .user-info {
        display: none;
    }
}

/* ========================================
   유틸리티 클래스
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-danger { color: var(--danger-color); }
.text-muted { color: var(--text-muted); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* 프린트 스타일 */
@media print {
    .sidebar,
    .header,
    .toolbar .actions,
    .pagination-wrapper {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
    }

    .page-content {
        padding: 0;
    }

    .table {
        font-size: 10pt;
    }
}