/* ===================================
   CSS Reset & Variables
   =================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-50: #e8f0ff;
    --primary-100: #b8ddff;
    --primary-500: #1890ff;
    --primary-600: #096dd9;
    --primary-700: #0050b3;

    --success-50: #f6ffed;
    --success-500: #52c41a;
    --success-600: #389e0d;

    --warning-50: #fffbe6;
    --warning-500: #faad14;
    --warning-600: #d48806;

    --danger-50: #fff1f0;
    --danger-500: #ff4d4f;
    --danger-600: #cf1322;

    /* Text Colors */
    --text-primary: #1f1f1f;
    --text-secondary: #595959;
    --text-tertiary: #8c8c8c;
    --text-disabled: #bfbfbf;
    --text-inverse: #ffffff;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.45);
    --bg-sidebar: #001529;

    /* Border Colors */
    --border-light: #e5e5e5;
    --border-default: #d9d9d9;
    --border-dark: #a6a6a6;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
                     'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --header-height: 56px;
    --sidebar-width: 220px;
    --sidebar-collapsed-width: 64px;
}

/* ===================================
   Base Styles
   =================================== */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-600);
}

button {
    font-family: inherit;
    font-size: inherit;
}

select, input, textarea {
    font-family: inherit;
}

/* ===================================
   Header
   =================================== */
.header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, #FF6B9D 0%, #C44DFF 100%);
    color: var(--text-inverse);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-6);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.logo-text {
    white-space: nowrap;
}

.version {
    font-size: var(--font-size-xs);
    padding: 2px var(--space-2);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-weight: 500;
}

.company {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-weight: 400;
}

.header-divider {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.25);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
}

.user-info:focus-visible {
    outline: 2px solid var(--text-inverse);
    outline-offset: 2px;
}

.user-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
}

.user-avatar svg {
    width: 20px;
    height: 20px;
}

.user-avatar + span {
    white-space: nowrap;
}

.dropdown-arrow {
    flex-shrink: 0;
    color: var(--text-inverse);
    transition: transform var(--transition-fast);
    width: 12px;
    height: 12px;
}

.user-info:hover .dropdown-arrow {
    transform: translateY(1px);
}

/* ===================================
   Container Layout
   =================================== */
.container {
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

/* ===================================
   Sidebar
   =================================== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    padding: var(--space-4) 0;
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.nav-section {
    margin-bottom: var(--space-1);
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-5);
    color: rgba(255, 255, 255, 0.65);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: 0;
    position: relative;
    user-select: none;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-500);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.85);
}

.nav-item.active {
    background: var(--primary-500);
    color: var(--text-inverse);
}

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-item:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: -2px;
}

.nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin-right: var(--space-3);
    flex-shrink: 0;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
}

.nav-text {
    flex: 1;
    font-size: var(--font-size-base);
    font-weight: 400;
    white-space: nowrap;
}

.nav-arrow {
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.4);
    transition: transform var(--transition-normal);
}

.nav-item.active .nav-arrow {
    transform: rotate(180deg);
}

.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    background: rgba(0, 0, 0, 0.2);
}

.nav-submenu.show {
    max-height: 200px;
}

.nav-subitem {
    padding: var(--space-2) var(--space-5) var(--space-2) calc(var(--space-5) + 20px + var(--space-3));
    color: rgba(255, 255, 255, 0.65);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.nav-subitem:hover {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.85);
}

.nav-subitem.active {
    color: var(--primary-100);
    background: rgba(24, 144, 255, 0.15);
}

.nav-subitem.active::before {
    content: '';
    position: absolute;
    left: calc(var(--space-5) + 20px + var(--space-3) - 6px);
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary-100);
    border-radius: 50%;
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    flex: 1;
    width: 0;
    padding: var(--space-6);
    background: var(--bg-secondary);
}

/* ===================================
   Page Header
   =================================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    gap: var(--space-6);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

/* Breadcrumb */
.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.breadcrumb * {
    display: inline-flex;
    align-items: center;
}

.breadcrumb-list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
}

.breadcrumb-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--primary-500);
}

.breadcrumb-link svg {
    width: 14px;
    height: 14px;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '/';
    color: var(--text-tertiary);
    margin: 0 var(--space-1);
}

.breadcrumb-item.active {
    color: var(--primary-500);
}

/* Page Header Stats */
.page-header-right {
    display: flex;
    gap: var(--space-4);
}

.stat-card {
    background: var(--bg-primary);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    min-width: 120px;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.active {
    color: var(--success-500);
}

.stat-value.inactive {
    color: var(--text-tertiary);
}

/* ===================================
   Toolbar
   =================================== */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    gap: var(--space-4);
}

.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* ===================================
   Filter Group
   =================================== */
.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.filter-label {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.filter-select {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23595959' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.filter-select:hover {
    border-color: var(--primary-500);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 2px var(--primary-50);
}

.filter-select:disabled {
    cursor: not-allowed;
    background-color: var(--bg-secondary);
    color: var(--text-disabled);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
}

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

.btn:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--primary-500);
    color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-600);
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.3);
}

.btn-primary:active:not(:disabled) {
    background: var(--primary-700);
}

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

.btn-secondary:hover:not(:disabled) {
    color: var(--primary-500);
    border-color: var(--primary-500);
}

.btn-secondary:active:not(:disabled) {
    background: var(--bg-secondary);
}

.btn svg {
    width: 16px;
    height: 16px;
}

/* ===================================
   Search Box
   =================================== */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-btn {
    position: absolute;
    left: var(--space-2);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.search-btn:hover {
    color: var(--primary-500);
}

.search-input {
    width: 280px;
    padding: var(--space-2) var(--space-3) var(--space-2) 40px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    background: var(--bg-primary);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-input:hover {
    border-color: var(--primary-500);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 2px var(--primary-50);
}

.search-input:focus ~ .search-btn {
    color: var(--primary-500);
}

/* ===================================
   Table Container
   =================================== */
.table-container {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

/* ===================================
   Data Table
   =================================== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    empty-cells: show;
}

.data-table thead {
    background: var(--bg-secondary);
}

.data-table th {
    padding: var(--space-4);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
    font-size: var(--font-size-sm);
}

.data-table td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

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

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

/* Table Header Content */
.th-content {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.sort-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
}

.sort-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.sort-btn.active {
    color: var(--primary-500);
}

.sort-btn.active .sort-icon.asc {
    transform: rotate(0deg);
}

.sort-btn.active .sort-icon.desc {
    transform: rotate(180deg);
}

.sort-icon {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    line-height: 1.5;
}

.status-active {
    background: var(--success-50);
    color: var(--success-600);
}

.status-inactive {
    background: var(--danger-50);
    color: var(--danger-600);
}

/* Action Buttons */
.action-btn {
    color: var(--primary-500);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-sm);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background: var(--primary-50);
    opacity: 0.8;
}

.action-btn.danger {
    color: var(--danger-500);
}

.action-btn.danger:hover {
    background: var(--danger-50);
}

/* Checkbox Styling */
.checkbox-wrapper {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.checkbox-wrapper input[type="checkbox"] {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
}

.checkbox-indicator {
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border-dark);
    border-radius: 3px;
    background: var(--bg-primary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkbox-indicator::after {
    content: '';
    width: 10px;
    height: 5px;
    border-left: 2px solid var(--text-inverse);
    border-bottom: 2px solid var(--text-inverse);
    transform: rotate(-45deg) translate(1px, -1px);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.checkbox-wrapper:hover .checkbox-indicator {
    border-color: var(--primary-500);
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkbox-indicator {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkbox-indicator::after {
    opacity: 1;
}

.checkbox-wrapper input[type="checkbox"]:disabled + .checkbox-indicator {
    background: var(--bg-secondary);
    border-color: var(--border-light);
    cursor: not-allowed;
}

/* ===================================
   Empty State
   =================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px var(--space-6);
    text-align: center;
}

.empty-state.hidden {
    display: none;
}

.empty-illustration {
    margin-bottom: var(--space-6);
    opacity: 0.6;
}

.empty-illustration svg {
    width: 120px;
    height: 120px;
}

.empty-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    max-width: 400px;
}

.empty-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    opacity: 0.4;
}

.empty-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.empty-hint {
    font-size: var(--font-size-sm);
    color: var(--text-disabled);
}

/* ===================================
   Pagination
   =================================== */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-5);
    padding: var(--space-4) var(--space-6);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.pagination-pages {
    display: flex;
    gap: var(--space-1);
}

.pagination-btn,
.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    min-height: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn svg,
.page-btn svg {
    width: 16px;
    height: 16px;
}

.pagination-btn:hover:not(:disabled),
.page-btn:hover:not(.active) {
    color: var(--primary-500);
    border-color: var(--primary-500);
}

.pagination-btn:disabled,
.page-btn:disabled {
    cursor: not-allowed;
    opacity: 0.4;
}

.page-btn.active {
    background: var(--primary-500);
    color: var(--text-inverse);
    border-color: var(--primary-500);
}

.page-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space-2);
    color: var(--text-tertiary);
}

.pagination-info {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pagination-count {
    font-weight: 600;
    color: var(--primary-500);
}

.pagination-separator {
    color: var(--text-tertiary);
}

.page-size-select {
    padding: var(--space-1) var(--space-2);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    background: var(--bg-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.page-size-select:hover {
    border-color: var(--primary-500);
}

.page-size-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 2px var(--primary-50);
}

/* ===================================
   Modal
   =================================== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    backdrop-filter: blur(2px);
}

.modal.show {
    display: flex;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-overlay {
    position: absolute;
    inset: 0;
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: calc(100vh - 32px);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.modal-content.modal-large {
    max-width: 640px;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--border-light);
}

.modal-header-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.modal-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--primary-50);
    border-radius: var(--radius-md);
    color: var(--primary-500);
}

.modal-icon svg {
    width: 18px;
    height: 18px;
}

.modal-icon.icon-info {
    background: var(--primary-50);
    color: var(--primary-500);
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-body {
    padding: var(--space-6);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-light);
}

/* ===================================
   Form
   =================================== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-5);
}

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

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.required {
    color: var(--danger-500);
    margin-left: 2px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-tertiary);
}

.form-input:hover,
.form-textarea:hover {
    border-color: var(--primary-500);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 2px var(--primary-50);
}

.form-input:disabled,
.form-textarea:disabled {
    cursor: not-allowed;
    background: var(--bg-secondary);
    color: var(--text-disabled);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: var(--line-height-relaxed);
}

.form-hint {
    display: block;
    margin-top: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ===================================
   Detail Grid (Modal View)
   =================================== */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.detail-item {
    padding: var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.detail-label {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--space-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 500;
}

.detail-value.empty {
    color: var(--text-disabled);
    font-style: italic;
}

.detail-item.full-width {
    grid-column: 1 / -1;
}

/* ===================================
   Toast Notification
   =================================== */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--space-4));
    right: var(--space-4);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 320px;
    max-width: 420px;
    animation: toastSlideIn var(--transition-normal);
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.hiding {
    animation: toastSlideOut var(--transition-normal) forwards;
}

@keyframes toastSlideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    flex-shrink: 0;
}

.toast-icon svg {
    width: 14px;
    height: 14px;
    color: var(--text-inverse);
}

.toast-icon.success {
    background: var(--success-500);
}

.toast-icon.error {
    background: var(--danger-500);
}

.toast-icon.warning {
    background: var(--warning-500);
}

.toast-icon.info {
    background: var(--primary-500);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.toast-message {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    line-height: 1.5;
}

.toast-close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: var(--space-1);
    transition: color var(--transition-fast);
}

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

.toast-close svg {
    width: 14px;
    height: 14px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    margin-top: 48px;
    padding: var(--space-6) 0;
    border-top: 1px solid var(--border-light);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    gap: var(--space-4);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-500);
}

.footer-divider {
    width: 1px;
    height: 16px;
    background: var(--border-light);
}

.footer-text {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.footer-text span {
    white-space: nowrap;
}

.footer-separator {
    color: var(--border-dark);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: var(--sidebar-collapsed-width);
    }

    .logo-text,
    .brand-info,
    .version,
    .company,
    .nav-text,
    .nav-arrow {
        display: none;
    }

    .nav-item {
        justify-content: center;
        padding: var(--space-3);
    }

    .nav-icon {
        margin-right: 0;
    }

    .nav-submenu {
        position: fixed;
        left: calc(var(--sidebar-collapsed-width) + var(--space-1));
        top: var(--header-height);
        background: var(--bg-sidebar);
        border-radius: var(--radius-md);
        padding: var(--space-2) 0;
        box-shadow: var(--shadow-lg);
        z-index: 1001;
    }

    .nav-subitem {
        padding: var(--space-2) var(--space-4);
        white-space: nowrap;
    }

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

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

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-header-right {
        width: 100%;
    }

    .stat-card {
        flex: 1;
        min-width: 0;
    }
}

@media (max-width: 768px) {
    .header-left, .header-right {
        gap: var(--space-2);
    }

    .company, .header-divider:first-of-type {
        display: none;
    }

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

    .toolbar-left, .toolbar-right {
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .search-box {
        flex: 1;
        min-width: 0;
    }

    .search-input {
        width: 100%;
    }

    .filter-select {
        flex: 1;
        min-width: 100px;
    }

    .data-table th,
    .data-table td {
        padding: var(--space-2) var(--space-3);
    }

    .action-btn {
        padding: var(--space-1);
    }

    .pagination {
        flex-direction: column;
        gap: var(--space-3);
    }

    .modal-content {
        max-height: calc(100vh - 16px);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-3);
    }

    .footer-divider {
        width: 16px;
        height: 1px;
    }

    .toast-container {
        left: var(--space-2);
        right: var(--space-2);
        top: var(--space-4);
    }

    .toast {
        min-width: auto;
        max-width: none;
    }
}

/* ===================================
   Utilities
   =================================== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading State */
.loading {
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.7);
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms;
        animation-iteration-count: 1;
        transition-duration: 0.01ms;
    }
}