/* Admin Panel Styles - CSS Variables Based */
:root {
    --bg: #0a0a0a;
    --surface: #111111;
    --surface-hover: #1a1a1a;
    --border: #2a2a2a;
    --text: #ffffff;
    --text-muted: #888888;
    --accent: #00d4aa;
    --accent-dim: rgba(0, 212, 170, 0.1);
    --sidebar-width: 260px;
    --header-height: 64px;
    --danger: #ff5555;
    --warning: #ffa500;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Animations */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-logo::before {
    content: '>';
    color: var(--text-muted);
}

.sidebar-logo::after {
    content: '_';
    animation: blink 1s infinite;
    color: var(--accent);
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 1.5rem;
    margin-bottom: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    border-left: 2px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background: var(--accent-dim);
    color: var(--accent);
    border-left-color: var(--accent);
}

.nav-item-icon {
    width: 20px;
    text-align: center;
}

/* User section */
.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent-dim);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.user-info {
    flex: 1;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
}

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

.logout-btn {
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

.logout-btn:hover {
    color: var(--accent);
    background: var(--accent-dim);
}

/* Main Content */
.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    height: var(--header-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

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

.header-actions {
    display: flex;
    gap: 0.75rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.back-btn {
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.back-btn:hover {
    color: var(--accent);
    background: var(--accent-dim);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-danger {
    background: rgba(255, 85, 85, 0.1);
    border: 1px solid rgba(255, 85, 85, 0.3);
    color: var(--danger);
}

.btn-danger:hover {
    background: rgba(255, 85, 85, 0.2);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

/* Content Area */
.content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.content-header {
    margin-bottom: 2rem;
}

.content-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.content-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 0.3s;
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent);
}

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title::before {
    content: '//';
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

.data-table th,
.data-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
}

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

.data-table td {
    font-size: 0.9rem;
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-published {
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 170, 0.3);
}

.badge-draft {
    background: rgba(136, 136, 136, 0.1);
    color: var(--text-muted);
    border: 1px solid rgba(136, 136, 136, 0.3);
}

/* Action Links */
.action-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.35rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.action-link:hover {
    color: var(--accent);
    background: var(--accent-dim);
}

.action-link.delete:hover {
    color: var(--danger);
    background: rgba(255, 85, 85, 0.1);
}

/* Form Styles */
.form-container {
    max-width: 900px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

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

.form-textarea {
    resize: vertical;
    min-height: 400px;
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.6;
}

.form-select {
    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='%23888888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

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

/* Title Input */
.title-input {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 1rem 1.25rem;
}

/* Slug Input */
.slug-input-wrapper {
    position: relative;
}

.slug-prefix {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

.slug-input {
    padding-left: 3rem;
    font-family: 'JetBrains Mono', monospace;
}

/* Meta Row */
.meta-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* Tags Input */
.tags-input-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    min-height: 48px;
    align-items: center;
}

.tags-input-container:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.tag-item {
    padding: 0.35rem 0.75rem;
    background: var(--accent-dim);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tag-remove {
    cursor: pointer;
    opacity: 0.7;
    font-weight: bold;
}

.tag-remove:hover {
    opacity: 1;
}

.tag-input {
    flex: 1;
    min-width: 100px;
    background: transparent;
    border: none;
    color: var(--text);
    padding: 0.35rem;
    font-size: 0.9rem;
    outline: none;
}

/* Actions Footer */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

/* Help Text */
.form-help {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-link {
    padding: 0.5rem 0.875rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.page-link:hover,
.page-link.active {
    border-color: var(--accent);
    color: var(--accent);
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .meta-row {
        grid-template-columns: 1fr;
    }
}