/* ============================================================================
   Admin Layout & Dashboard Styles
   - Integrates with MudBlazor without overriding Mud components
   - Focuses on custom admin-* and accent-* classes only
   ============================================================================ */

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

html, body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

/* Utility Classes */
.d-flex {
    display: flex;
}

.align-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-space-between {
    justify-content: space-between;
}

.pa-8 {
    padding: 32px !important;
}

.mb-4 {
    margin-bottom: 16px !important;
}

.mb-6 {
    margin-bottom: 24px !important;
}

.mt-4 {
    margin-top: 16px !important;
}

.text-center {
    text-align: center;
}

.ml-3 {
    margin-left: 12px !important;
}

.cursor-pointer {
    cursor: pointer;
}

.font-weight-bold {
    font-weight: 600 !important;
}

/* ============================================================================
   Login Page Styles
   ============================================================================ */

.admin-login-page.mud-container {
    width: 100%;
    margin: 0 auto;
}

.admin-login-page.mud-container-maxwidth-small {
    max-width: 600px !important;
}

.admin-login-page .mud-paper {
    background-color: white;
    border-radius: 4px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.12);
    padding: 16px;
}

.admin-login-page .mud-paper.elevation-3 {
    box-shadow: 0 3px 6px 0 rgba(0, 0, 0, 0.16);
}

.admin-login-page .mud-typography {
    color: #333;
    line-height: 1.5;
}

.admin-login-page .mud-typography--h4 {
    font-size: 2.125rem;
    font-weight: 500;
    color: #1976d2;
}

.admin-login-page .mud-typography--body1 {
    font-size: 1rem;
}

.admin-login-page input[type="text"],
.admin-login-page input[type="password"] {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.admin-login-page input[type="text"]:focus,
.admin-login-page input[type="password"]:focus {
    outline: none;
    border-color: #1976d2;
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.admin-login-page label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #555;
    font-size: 0.875rem;
}

.admin-login-page button {
    width: 100%;
    padding: 12px 24px;
    margin-top: 12px;
    background-color: #1976d2;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.admin-login-page button:hover {
    background-color: #1565c0;
}

.admin-login-page button:disabled {
    background-color: #bdbdbd;
    cursor: not-allowed;
}

.admin-login-page .mud-alert {
    padding: 12px 16px;
    margin-bottom: 16px;
    border-radius: 4px;
    background-color: #ffebee;
    border-left: 4px solid #c62828;
    color: #c62828;
}

.admin-login-page .mud-alert--error {
    background-color: #ffebee;
    color: #c62828;
}

.admin-login-page .mud-alert--success {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.admin-login-page .mud-alert--info {
    background-color: #e3f2fd;
    color: #1565c0;
}

.admin-login-page .mud-progress-circular {
    display: inline-block;
}

.loading {
    opacity: 0.6;
}

/* Reconnect Modal */
.admin-reconnect-modal {
    display: none;
}

.admin-reconnect-modal.components-reconnect-show,
.admin-reconnect-modal.components-reconnect-failed,
.admin-reconnect-modal.components-reconnect-rejected {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 23, 42, 0.48);
}

.admin-reconnect-card {
    width: min(420px, 100%);
    padding: 24px;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.28);
}

.admin-reconnect-card strong,
.admin-reconnect-card span {
    display: block;
}

.admin-reconnect-card span {
    margin-top: 8px;
    color: #64748b;
}

/* ============================================================================
   Admin Shell (Main Layout)
   ============================================================================ */

.admin-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: #f5f5f5;
}

.admin-topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 24px;
    background-color: #fff;
    border-bottom: 1px solid #e0e0e0;
    z-index: 100;
}

.admin-menu-button {
    margin-right: 8px;
}

.admin-topbar-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.admin-topbar-action {
    white-space: nowrap;
}

.admin-drawer {
    width: 280px;
    background-color: #fff;
    border-right: 1px solid #e0e0e0;
}

.admin-drawer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 16px;
    border-bottom: 1px solid #f0f0f0;
}

.admin-brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, #1976d2 0%, #1565c0 100%);
    color: white;
    font-weight: bold;
    font-size: 18px;
}

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

.admin-nav .mud-nav-link,
.admin-nav .mud-nav-group-header {
    margin: 4px 8px !important;
    border-radius: 8px !important;
}

.admin-nav .mud-nav-link.active {
    background-color: #e3f2fd !important;
}

.admin-drawer-footer {
    padding: 16px;
    border-top: 1px solid #f0f0f0;
    font-size: 0.875rem;
}

.admin-main {
    flex: 1;
    overflow-y: auto;
    background-color: #f5f5f5;
}

.admin-content {
    padding: 32px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================================================
   Dashboard Page Styles
   ============================================================================ */

/* Page Header */
.admin-page-hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid #e0e0e0;
}

.admin-page-hero > div {
    flex: 1;
}

.admin-eyebrow {
    display: block;
    color: #1976d2;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.admin-page-title {
    display: block;
    color: #1a1a1a;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1.75rem;
}

.admin-page-subtitle {
    display: block;
    color: #666;
    font-size: 0.95rem;
}

/* Metrics Grid - CSS Grid Layout */
.admin-metric-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)) !important;
    gap: 16px !important;
    margin-bottom: 32px !important;
}

/* Metric Card - Customization for MudPaper */
.admin-metric-card {
    padding: 20px !important;
    border-radius: 8px !important;
    background-color: #fff !important;
    border: 1px solid #e0e0e0 !important;
    transition: all 0.2s ease !important;
    cursor: pointer !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    min-height: 140px !important;
}

.admin-metric-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08) !important;
    border-color: #d0d0d0 !important;
    transform: translateY(-2px) !important;
}

/* Metric Card Accent Colors */
.accent-blue {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%) !important;
    border-color: #90caf9 !important;
}

.accent-amber {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%) !important;
    border-color: #ffcc80 !important;
}

.accent-slate {
    background: linear-gradient(135deg, #eceff1 0%, #cfd8dc 100%) !important;
    border-color: #b0bec5 !important;
}

.accent-green {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%) !important;
    border-color: #81c784 !important;
}

/* Surfaces & Containers */
.admin-surface {
    padding: 24px !important;
    border-radius: 8px !important;
    background-color: #fff !important;
    border: 1px solid #e0e0e0 !important;
    margin-bottom: 24px !important;
}

.admin-section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.admin-section-header > div:first-child {
    flex: 1;
}

/* Tables */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background-color: #f5f5f5;
    border-bottom: 2px solid #e0e0e0;
}

.admin-table thead th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: #666;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table tbody tr {
    border-bottom: 1px solid #f0f0f0;
}

.admin-table tbody tr:hover {
    background-color: #fafafa;
}

.admin-table tbody td {
    padding: 12px 16px;
    color: #333;
}

.admin-table tbody a {
    color: #1976d2;
    text-decoration: none;
    font-weight: 600;
}

.admin-table tbody a:hover {
    text-decoration: underline;
}

.admin-table .mud-chip-small {
    height: 24px !important;
    font-size: 0.75rem !important;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 960px) {
    .admin-drawer {
        width: 64px;
    }

    .admin-content {
        padding: 24px;
    }

    .admin-page-hero {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-section-header {
        flex-direction: column;
    }

    .admin-metric-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
    }
}

@media (max-width: 600px) {
    .admin-login-page.mud-container-maxwidth-small {
        max-width: 100% !important;
        padding: 16px;
    }

    .admin-login-page .mud-typography--h4 {
        font-size: 1.5rem;
    }

    .admin-content {
        padding: 16px;
    }

    .admin-page-hero {
        gap: 12px;
        margin-bottom: 20px;
        padding-bottom: 16px;
    }

    .admin-page-title {
        font-size: 1.25rem;
    }

    .admin-metric-grid {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }

    .admin-surface {
        padding: 16px !important;
    }

    .admin-section-header {
        gap: 12px;
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .admin-table thead th {
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .admin-table tbody td {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}