/**
 * =============================================
 * ARCHIVO: assets/css/estilos.css
 * DESCRIPCIÓN: Estilos principales del sistema
 * =============================================
 */

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

:root {
    --primary-color: #f39c12;
    --secondary-color: #e67e22;
    --dark-bg: #2c3e50;
    --darker-bg: #1a252f;
    --light-bg: #ecf0f1;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --border-color: #ddd;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f6fa;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--dark-bg);
    color: white;
    padding: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-brand h2 {
    margin: 15px 0;
    font-size: 22px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 20px 18px;
    display: inline-block;
    transition: background 0.3s;
    border-bottom: 3px solid transparent;
}

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

.nav-link.active {
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.nav-user {
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

.badge-role {
    background: var(--primary-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.btn-logout {
    background: var(--danger);
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s;
}

.btn-logout:hover {
    background: #c0392b;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 4px solid var(--primary-color);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.stat-card.warning {
    border-left-color: var(--warning);
}

.stat-card.danger {
    border-left-color: var(--danger);
}

.stat-icon {
    font-size: 40px;
    opacity: 0.8;
}

.stat-content h3 {
    font-size: 32px;
    color: var(--primary-color);
    margin: 0;
}

.stat-content p {
    margin: 5px 0 0 0;
    color: var(--text-light);
    font-size: 14px;
}

/* Toolbar */
.toolbar {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.search-form {
    display: flex;
    gap: 10px;
    flex: 1;
    max-width: 600px;
}

.search-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
}

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

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

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

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

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

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

.btn-success:hover {
    background: #229954;
}

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

.btn-danger:hover {
    background: #c0392b;
}

.btn-icon {
    font-size: 18px;
    text-decoration: none;
    padding: 5px 10px;
    display: inline-block;
    transition: transform 0.2s;
}

.btn-icon:hover {
    transform: scale(1.2);
}

/* Table */
.table-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.data-table thead {
    background: var(--dark-bg);
    color: white;
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--light-bg);
    font-size: 14px;
}

.data-table tbody tr:hover {
    background: #f8f9fa;
}

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

.tag-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.quantity-badge {
    background: var(--light-bg);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 600;
    color: var(--text-dark);
}

.badge {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.badge-operativo {
    background: #d4edda;
    color: #155724;
}

.badge-mantenimiento {
    background: #fff3cd;
    color: #856404;
}

.badge-baja {
    background: #f8d7da;
    color: #721c24;
}

.actions {
    white-space: nowrap;
}

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

.text-muted {
    color: var(--text-light);
    font-style: italic;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
}

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

/* Forms */
.form-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.form-section {
    margin-bottom: 30px;
}

.form-section h3 {
    color: var(--dark-bg);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}

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

.form-group small {
    margin-top: 5px;
    color: var(--text-light);
    font-size: 12px;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--warning);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    color: var(--dark-bg);
    font-size: 32px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
    }
    
    .nav-link {
        padding: 15px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .nav-user {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding: 15px;
        border-top: 1px solid rgba(255,255,255,0.2);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-form {
        max-width: 100%;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 8px;
    }
}

/* Utilities */
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.text-right { text-align: right; }
.text-left { text-align: left; }