/* CSS Variables - extending landing page pattern */
:root {
    --primary: #0066cc;
    --background: #ffffff;
    --background-elevated: #ffffff;
    --foreground: #1a1a1a;
    --muted-foreground: #666666;
    --border: #e0e0e0;
    --card: #ffffff;
    --card-hover: #f5f5f5;

    /* Admin-specific colors */
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --info: #0284c7;
    --input-bg: #f9fafb;
    --input-border: #d1d5db;
    --table-header-bg: #f9fafb;
    --badge-bg: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #4a9eff;
        --background: #0f0f0f;
        --background-elevated: #1a1a1a;
        --foreground: #f0f0f0;
        --muted-foreground: #999999;
        --border: #333333;
        --card: #1a1a1a;
        --card-hover: #2a2a2a;

        --success: #22c55e;
        --warning: #fbbf24;
        --danger: #ef4444;
        --info: #38bdf8;
        --input-bg: #1f1f1f;
        --input-border: #404040;
        --table-header-bg: #1f1f1f;
        --badge-bg: #2a2a2a;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--foreground);
    background: var(--background);
    min-height: 100vh;
}

/* Login Screen */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 400px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
}

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

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

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

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

.login-form label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
}

.login-form input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--foreground);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* OAuth Buttons */
.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.btn-oauth {
    width: 100%;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-microsoft {
    background: #2f2f2f;
    color: white;
    border-color: #2f2f2f;
}

.btn-microsoft:hover {
    background: #1f1f1f;
    border-color: #1f1f1f;
}

@media (prefers-color-scheme: dark) {
    .btn-microsoft {
        background: #ffffff;
        color: #2f2f2f;
        border-color: #ffffff;
    }

    .btn-microsoft:hover {
        background: #f0f0f0;
        border-color: #f0f0f0;
    }
}

.login-divider {
    position: relative;
    text-align: center;
    margin: 24px 0;
}

.login-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.login-divider span {
    position: relative;
    display: inline-block;
    padding: 0 16px;
    background: var(--card);
    color: var(--muted-foreground);
    font-size: 14px;
}

.error-message {
    margin-top: 16px;
    padding: 12px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--danger);
    border-radius: 4px;
    color: var(--danger);
    font-size: 14px;
}

/* Admin Panel Layout */
.admin-panel {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.admin-header {
    background: var(--background-elevated);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 3px 1px -2px rgba(0,0,0,0.2), 0 2px 2px 0 rgba(0,0,0,0.14), 0 1px 5px 0 rgba(0,0,0,0.12);
}

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

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

.header-left h1 {
    font-size: 20px;
    font-weight: 600;
}

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

.key-prefix {
    font-size: 12px;
    font-family: monospace;
    color: var(--muted-foreground);
    background: var(--badge-bg);
    padding: 4px 8px;
    border-radius: 4px;
}

/* Navigation */
.admin-nav {
    background: var(--background-elevated);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
}

.nav-tab {
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--muted-foreground);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.nav-tab:hover {
    color: var(--foreground);
    background: var(--card-hover);
}

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

.nav-tab i {
    margin-right: 8px;
}

/* Content */
.admin-content {
    flex: 1;
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.content-section {
    display: none;
}

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

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

.section-header h2 {
    font-size: 24px;
    font-weight: 600;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.2s;
}

.stat-card:hover {
    background: var(--card-hover);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: rgba(0, 102, 204, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 24px;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 12px;
    color: var(--muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--foreground);
}

.stat-sublabel {
    font-size: 13px;
    color: var(--muted-foreground);
    margin-top: 4px;
}

/* Quick Links */
.quick-links {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
}

.quick-links h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.quick-links .btn {
    margin-right: 12px;
    margin-bottom: 8px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--card);
    color: var(--foreground);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--card-hover);
}

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

.btn-danger:hover {
    opacity: 0.9;
}

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

.btn-success:hover {
    opacity: 0.9;
}

/* Filter Bar */
.filter-bar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.filter-select,
.filter-input {
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--foreground);
    flex: 1;
    min-width: 150px;
}

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

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    cursor: pointer;
}

.filter-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Tables */
.table-container {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

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

thead {
    background: var(--table-header-bg);
    border-bottom: 1px solid var(--border);
}

thead th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
    cursor: pointer;
}

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

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

tbody td {
    padding: 12px 16px;
    font-size: 14px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    text-transform: capitalize;
}

.badge-success {
    background: rgba(22, 163, 74, 0.1);
    color: var(--success);
}

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

.badge-danger {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger);
}

.badge-info {
    background: rgba(2, 132, 199, 0.1);
    color: var(--info);
}

.badge-default {
    background: var(--badge-bg);
    color: var(--muted-foreground);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 16px;
}

.pagination button {
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--foreground);
    border-radius: 4px;
    cursor: pointer;
}

.pagination button:hover:not(:disabled) {
    background: var(--card-hover);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-info {
    font-size: 14px;
    color: var(--muted-foreground);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
}

.modal {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 20px;
    color: var(--muted-foreground);
    cursor: pointer;
    padding: 4px;
}

.modal-close:hover {
    color: var(--foreground);
}

.modal-body {
    padding: 24px;
}

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

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--foreground);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group .help-text {
    font-size: 12px;
    color: var(--muted-foreground);
    margin-top: 4px;
}

/* Loading State */
.loading {
    padding: 40px;
    text-align: center;
    color: var(--muted-foreground);
}

.loading::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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

/* Empty State */
.empty-state {
    padding: 60px 24px;
    text-align: center;
}

.empty-state i {
    font-size: 48px;
    color: var(--muted-foreground);
    margin-bottom: 16px;
}

.empty-state p {
    color: var(--muted-foreground);
    font-size: 14px;
}

/* Expandable Details */
.details-row {
    background: var(--table-header-bg);
}

.details-content {
    padding: 16px;
    border-top: 1px solid var(--border);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-size: 12px;
    color: var(--muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 14px;
    color: var(--foreground);
    word-break: break-word;
}

.detail-value code {
    background: var(--badge-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
    font-family: monospace;
}

/* Action Buttons in Table */
.action-buttons {
    display: flex;
    gap: 8px;
}

.action-btn {
    padding: 6px 12px;
    font-size: 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    color: var(--foreground);
    transition: all 0.2s;
}

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

.action-btn i {
    margin-right: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-content {
        padding: 16px;
    }

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

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

    .filter-select,
    .filter-input {
        min-width: 100%;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    table {
        font-size: 12px;
    }

    thead th,
    tbody td {
        padding: 8px;
    }
}