:root {
    --primary: #267EF0;
    --primary-light: #4B94F4;
    --primary-dark: #1B5AC8;
    --accent: #5BA3F8;
    --bg-dark: #D8E2F0;
    --bg-card: #ffffff;
    --bg-card-hover: #EDF4FC;
    --border: #C5D4E8;
    --text: #1A2B3C;
    --text-secondary: #4A6078;
    --text-muted: #7A8BA3;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 4px 20px rgba(38, 126, 240, 0.12);
    --glass: rgba(255, 255, 255, 0.95);
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #D8E2F0 0%, #EDF4FC 50%, #ffffff 100%);
    min-height: 100vh;
    color: var(--text);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 10% 10%, rgba(38, 126, 240, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 90%, rgba(38, 126, 240, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(38, 126, 240, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(38, 126, 240, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(38, 126, 240, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
    animation: slideUp 0.6s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

.login-logo h1 {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #1B5AC8 0%, #267EF0 50%, #5BA3F8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 8px;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: #F5F8FC;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 14px;
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(38, 126, 240, 0.12);
}

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

/* Select */
.form-select {
    width: 100%;
    padding: 14px 18px;
    background: #F5F8FC;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 15px;
    transition: all 0.3s ease;
    outline: none;
    cursor: pointer;
    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='%234A6078' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(38, 126, 240, 0.12);
}

.form-select option {
    background: #ffffff;
    color: var(--text);
}

.btn {
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-family: inherit;
}

.btn-sm {
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-family: inherit;
}

.btn-secondary {
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    font-family: inherit;
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #267EF0 0%, #1B5AC8 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(38, 126, 240, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(38, 126, 240, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Main Layout */
.app-container {
    display: none;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-logo {
    padding: 0 12px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.sidebar-logo h2 {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #1B5AC8 0%, #5BA3F8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-radius: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 4px;
    font-size: 14px;
    text-decoration: none;
}

.nav-item:hover {
    background: var(--bg-card-hover);
    color: var(--text);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(38, 126, 240, 0.15) 0%, rgba(91, 163, 248, 0.1) 100%);
    color: var(--primary);
    border: 1px solid rgba(38, 126, 240, 0.2);
}

.nav-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    opacity: 0.8;
    flex-shrink: 0;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #267EF0 0%, #5BA3F8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
    color: white;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

.btn-logout {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

.main-content {
    margin-left: 260px;
    padding: 40px 60px;
    min-height: 100vh;
    width: calc(100% - 260px);
    max-width: 100%;
}

.page-header {
    margin-bottom: 36px;
}

.page-title {
    font-size: 30px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 36px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: rgba(38, 126, 240, 0.3);
    box-shadow: 0 8px 24px rgba(38, 126, 240, 0.15);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
    background: linear-gradient(135deg, #1A2B3C 0%, #267EF0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(38, 126, 240, 0.06);
    width: 100%;
}

.card-header {
    padding: 24px 36px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #FAFBFC;
}

.card-header .btn {
    width: auto;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.card-body {
    padding: 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: linear-gradient(180deg, #FAFBFC 0%, #F5F7FA 100%);
}

.data-table th {
    padding: 14px 18px;
    text-align: left;
    font-size: 14px;
    font-weight: 600;
    color: #4A6078;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.data-table td {
    padding: 16px 18px;
    font-size: 14px;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    white-space: nowrap;
}

.data-table tbody tr {
    transition: all 0.2s ease;
}

.data-table tbody tr:hover {
    background: linear-gradient(90deg, rgba(38, 126, 240, 0.04) 0%, rgba(38, 126, 240, 0.02) 100%);
}

.table-wrap {
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow-x: auto;
    overflow-y: hidden;
    background: white;
    box-shadow: 0 6px 18px rgba(38, 126, 240, 0.06);
}

.list-toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 12px;
    margin: 10px 0 16px;
    padding-left: 12px;
    padding-right: 12px;
    flex-wrap: wrap;
}

.list-toolbar .toolbar-left {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.list-toolbar .toolbar-field {
    min-width: 240px;
    max-width: 360px;
}

.list-toolbar .toolbar-field .form-input,
.list-toolbar .toolbar-field .form-select {
    padding: 10px 12px;
    font-size: 14px;
    border-radius: 10px;
}

.list-toolbar .btn,
.list-toolbar .btn-primary {
    width: auto;
    padding: 10px 16px;
    font-size: 14px;
    border-radius: 10px;
    white-space: nowrap;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 36px;
    border-top: 1px solid var(--border);
    background: #FAFBFC;
}

.pagination-btns {
    display: flex;
    gap: 10px;
}

.page-btn {
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 500;
}

.page-btn:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(38, 126, 240, 0.25);
}

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

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

.page-input {
    width: 60px;
    height: 36px;
    padding: 0 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 14px;
    text-align: center;
}

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

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: #ffffff;
    border: 1px solid var(--border);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(38, 126, 240, 0.15);
}

.menu-toggle svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .menu-overlay.active {
        display: block;
    }

    .sidebar {
        transform: translateX(-100%);
        width: 260px;
        transition: transform 0.3s ease;
    }

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

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 70px 16px 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

.hidden {
    display: none !important;
}

.error-message {
    color: var(--danger);
    margin-top: 15px;
    text-align: center;
    font-size: 14px;
}

.status-normal {
    color: var(--success);
}

.status-disabled {
    color: var(--danger);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 20px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.3s ease;
    box-shadow: 0 20px 60px rgba(38, 126, 240, 0.18);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-content {
    padding: 24px;
}

.modal-header {
    padding: 16px 24px;
    background: linear-gradient(135deg, #267EF0 0%, #1B5AC8 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: #fff;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: rgba(255,255,255,0.2);
    color: #fff;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: rgba(255,255,255,0.3);
}

.modal-body {
    padding: 24px;
}

.modal-actions {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-lg {
    width: min(920px, calc(100vw - 32px));
}

.import-template-tip {
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.import-template-tip a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.import-template-tip a:hover {
    text-decoration: underline;
}

.import-results {
    margin-top: 24px;
}

.import-summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.import-summary-item {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #f8fbff;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.import-summary-item span {
    color: var(--text-secondary);
    font-size: 13px;
}

.import-summary-item strong {
    font-size: 24px;
    color: var(--primary);
}

.btn-action {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text-secondary);
}

.btn-action:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(38, 126, 240, 0.2);
}

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

.btn-action-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(38, 126, 240, 0.3);
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 2000;
    pointer-events: none;
    max-width: min(360px, calc(100vw - 32px));
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(34, 197, 94, 0.22);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
    color: var(--text);
    transform: translate3d(0, -10px, 0);
    opacity: 0;
    transition: opacity 0.22s ease, transform 0.22s ease;
    pointer-events: auto;
}

.toast-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.toast-leaving {
    opacity: 0;
    transform: translate3d(0, -8px, 0);
}

.toast-success {
    border-color: rgba(34, 197, 94, 0.28);
}

.toast-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 197, 94, 0.12);
    color: var(--success);
}

.toast-icon svg {
    width: 16px;
    height: 16px;
    display: block;
}

.toast-body {
    flex: 1;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
}

.toast-close {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    border: none;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.14);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.toast-close:hover {
    background: rgba(148, 163, 184, 0.22);
    color: var(--text);
}