/* ============================================
   SleepLe Admin Panel Styles
   ============================================ */

:root {
    --admin-primary: #0A2647;
    --admin-primary-light: #144272;
    --admin-accent: #2C74B3;
    --admin-success: #10b981;
    --admin-warning: #f59e0b;
    --admin-danger: #ef4444;
    --admin-bg: #f1f5f9;
    --admin-card: #ffffff;
    --admin-border: #e2e8f0;
    --admin-text: #1e293b;
    --admin-text-muted: #64748b;
    --admin-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --admin-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --admin-radius: 12px;
    --admin-radius-sm: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    line-height: 1.6;
}

/* ============================================
   Layout
   ============================================ */

.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--admin-card);
    border-right: 1px solid var(--admin-border);
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-main {
    flex: 1;
    margin-left: 260px;
    padding: 32px 40px;
    min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */

.admin-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    text-decoration: none;
}

.admin-logo img {
    height: 36px;
}

.admin-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--admin-primary);
}

.admin-nav {
    flex: 1;
}

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

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-muted);
    margin-bottom: 12px;
    padding-left: 12px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    color: var(--admin-text-muted);
    text-decoration: none;
    border-radius: var(--admin-radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
    margin-bottom: 4px;
}

.nav-link:hover {
    background: var(--admin-bg);
    color: var(--admin-primary);
}

.nav-link.active {
    background: var(--admin-primary);
    color: white;
}

.nav-link .icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.admin-user {
    border-top: 1px solid var(--admin-border);
    padding-top: 20px;
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--admin-bg);
    border-radius: var(--admin-radius-sm);
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--admin-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.75rem;
    color: var(--admin-text-muted);
}

.btn-logout {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
    color: var(--admin-text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* ============================================
   Header
   ============================================ */

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.admin-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--admin-primary);
}

.admin-subtitle {
    color: var(--admin-text-muted);
    margin-top: 4px;
}

/* ============================================
   Stats Cards
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--admin-card);
    padding: 24px;
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    border: 1px solid var(--admin-border);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--admin-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue {
    background: rgba(44, 116, 179, 0.1);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
}

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

.stat-icon.purple {
    background: rgba(139, 92, 246, 0.1);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--admin-primary);
    line-height: 1;
}

.stat-label {
    color: var(--admin-text-muted);
    font-size: 0.875rem;
    margin-top: 4px;
}

/* ============================================
   Table
   ============================================ */

.table-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    border: 1px solid var(--admin-border);
    overflow: hidden;
}

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

.table-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.table-filters {
    display: flex;
    gap: 12px;
    align-items: center;
}

.filter-btn {
    padding: 8px 16px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--admin-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: white;
}

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

.admin-table th,
.admin-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--admin-border);
}

.admin-table th {
    background: var(--admin-bg);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-muted);
}

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

.admin-table tr:hover td {
    background: rgba(241, 245, 249, 0.5);
}

.article-title-cell {
    max-width: 300px;
}

.article-title {
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-slug {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    font-family: monospace;
}

/* ============================================
   Status Badges
   ============================================ */

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.published {
    background: rgba(16, 185, 129, 0.1);
    color: var(--admin-success);
}

.status-badge.draft {
    background: rgba(100, 116, 139, 0.1);
    color: var(--admin-text-muted);
}

/* ============================================
   SEO Indicator
   ============================================ */

.seo-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.seo-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.seo-indicator.good {
    background: var(--admin-success);
}

.seo-indicator.warning {
    background: var(--admin-warning);
}

.seo-indicator.bad {
    background: var(--admin-danger);
}

.seo-text {
    font-size: 0.85rem;
    color: var(--admin-text-muted);
}

/* ============================================
   Actions
   ============================================ */

.action-buttons {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--admin-bg);
    border-radius: var(--admin-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

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

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--admin-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--admin-primary-light);
}

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

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

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

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

/* ============================================
   Forms
   ============================================ */

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

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--admin-text);
}

.form-hint {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    margin-top: 4px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--admin-accent);
    box-shadow: 0 0 0 3px rgba(44, 116, 179, 0.1);
}

.char-counter {
    display: flex;
    justify-content: flex-end;
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    margin-top: 4px;
}

.char-counter.warning {
    color: var(--admin-warning);
}

.char-counter.error {
    color: var(--admin-danger);
}

/* ============================================
   SEO Preview
   ============================================ */

.seo-preview {
    background: var(--admin-bg);
    padding: 20px;
    border-radius: var(--admin-radius-sm);
    margin-top: 20px;
}

.seo-preview-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--admin-text-muted);
    margin-bottom: 12px;
}

.google-preview {
    background: white;
    padding: 16px;
    border-radius: var(--admin-radius-sm);
    border: 1px solid var(--admin-border);
}

.google-url {
    font-size: 0.8rem;
    color: #202124;
    margin-bottom: 4px;
}

.google-title {
    font-size: 1.1rem;
    color: #1a0dab;
    margin-bottom: 4px;
    cursor: pointer;
}

.google-title:hover {
    text-decoration: underline;
}

.google-desc {
    font-size: 0.875rem;
    color: #4d5156;
    line-height: 1.5;
}

/* ============================================
   Editor Container
   ============================================ */

.editor-container {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    border: 1px solid var(--admin-border);
    padding: 32px;
}

.editor-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.editor-full {
    grid-column: 1 / -1;
}

/* ============================================
   Tabs
   ============================================ */

.tabs {
    display: flex;
    gap: 4px;
    background: var(--admin-bg);
    padding: 4px;
    border-radius: var(--admin-radius-sm);
    margin-bottom: 24px;
}

.tab-btn {
    flex: 1;
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    color: var(--admin-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn.active {
    background: white;
    color: var(--admin-primary);
    box-shadow: var(--admin-shadow);
}

.tab-content {
    display: none;
}

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

/* ============================================
   Loading & Empty States
   ============================================ */

.loading-state,
.empty-state {
    text-align: center;
    padding: 60px 40px;
    color: var(--admin-text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--admin-border);
    border-top-color: var(--admin-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

.empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

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

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--admin-bg) 0%, #e2e8f0 100%);
}

.login-card {
    background: var(--admin-card);
    padding: 48px;
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow-lg);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.login-logo {
    height: 60px;
    margin-bottom: 24px;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--admin-primary);
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--admin-text-muted);
    margin-bottom: 32px;
}

.login-form .form-group {
    text-align: left;
}

.login-btn {
    width: 100%;
    padding: 14px;
    margin-top: 8px;
}

.login-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--admin-danger);
    padding: 12px;
    border-radius: var(--admin-radius-sm);
    margin-top: 16px;
    font-size: 0.9rem;
    display: none;
}

.login-error.visible {
    display: block;
}

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

@media (max-width: 1024px) {
    .admin-sidebar {
        width: 80px;
        padding: 16px;
    }

    .admin-main {
        margin-left: 80px;
    }

    .admin-logo-text,
    .nav-section-title,
    .nav-link span,
    .user-info,
    .btn-logout span {
        display: none;
    }

    .nav-link {
        justify-content: center;
        padding: 14px;
    }

    .nav-link .icon {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .admin-sidebar {
        display: none;
    }

    .admin-main {
        margin-left: 0;
        padding: 20px;
    }

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

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

    .admin-table {
        font-size: 0.85rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 12px 16px;
    }
}