/* ================================
   Variables CSS
   ================================ */
:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --purple-color: #8b5cf6;
    
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-color: #1e293b;
    --text-muted: #64748b;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* ================================
   Header & Navigation
   ================================ */
.header {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.nav {
    display: flex;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.nav a {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav a:hover {
    background: var(--bg-color);
}

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

/* ================================
   Stats Grid
   ================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 2rem;
}

.stat-content h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
}

.stat-value.success { color: var(--success-color); }
.stat-value.danger { color: var(--danger-color); }
.stat-value.warning { color: var(--warning-color); }
.stat-value.info { color: var(--info-color); }

.stat-card small {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ================================
   Sections
   ================================ */
section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.5rem;
}

section h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 1.25rem;
}

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

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

thead {
    background: var(--bg-color);
}

th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

tr:hover {
    background: var(--bg-color);
}

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

.params-cell {
    max-width: 250px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ================================
   Badges
   ================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-primary { background: var(--primary-color); color: white; }
.badge-success { background: var(--success-color); color: white; }
.badge-danger { background: var(--danger-color); color: white; }
.badge-warning { background: var(--warning-color); color: white; }
.badge-info { background: var(--info-color); color: white; }
.badge-purple { background: var(--purple-color); color: white; }
.badge-secondary { background: var(--secondary-color); color: white; }

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: #1d4ed8;
}

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-warning:hover {
    background: #d97706;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* ================================
   Forms
   ================================ */
.filters-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.filter-group select,
.filter-group input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.filter-actions {
    display: flex;
    gap: 0.5rem;
}

.create-form {
    max-width: 800px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.params-section {
    background: var(--bg-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

/* ================================
   Detail Page
   ================================ */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.detail-type {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.detail-section {
    margin-bottom: 2rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-item.full-width {
    grid-column: 1 / -1;
}

.info-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 1rem;
    font-weight: 500;
}

.code-block {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.params-grid {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
}

.param-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
}

.param-key {
    font-weight: 600;
    min-width: 150px;
}

.param-value {
    flex: 1;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.prm-list ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.prm-list code {
    background: var(--bg-color);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
}

.detail-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* ================================
   Pagination
   ================================ */
.pagination {
    margin-top: 1.5rem;
}

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ================================
   Messages & Alerts
   ================================ */
#message-container {
    margin-bottom: 1.5rem;
}

.message {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.message-success {
    background: #d1fae5;
    color: #065f46;
}

.message-error {
    background: #fee2e2;
    color: #991b1b;
}

/* ================================
   Footer
   ================================ */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ================================
   Utilities
   ================================ */
.text-muted {
    color: var(--text-muted);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.list-info {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ================================
   Responsive
   ================================ */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-form {
        grid-template-columns: 1fr;
    }
    
    .detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}