/* ============================================
   SISTEMA DE DISEÑO MODERNO - AUTOMOTORA
   Bootstrap 5 + Estilos Personalizados
   ============================================ */

:root {
    /* Colores corporativos */
    --primary-blue: #214494;
    --primary-dark: #1a3670;
    --primary-light: #4a7fc1;
    --secondary-blue: #5a8fd4;
    
    /* Colores de utilidad */
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --info: #4299e1;
    
    /* Grises */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Sombras */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* ============================================
   RESET Y BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
}

/* ============================================
   LAYOUT PRINCIPAL
   ============================================ */
.main-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid var(--gray-200);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--primary-blue);
}

.sidebar-header img {
    max-width: 140px;
    height: auto;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav-item:hover {
    background: var(--gray-50);
    color: var(--primary-blue);
    border-left-color: var(--primary-blue);
}

.sidebar-nav-item.active {
    background: var(--gray-50);
    color: var(--primary-blue);
    border-left-color: var(--primary-blue);
    font-weight: 600;
}

.sidebar-nav-item i {
    margin-right: 0.75rem;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

/* Topbar */
.topbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 999;
}

.topbar-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-weight: 500;
    color: var(--gray-700);
}

.btn-logout {
    background: var(--danger);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-logout:hover {
    background: #e53e3e;
}

/* Content Area */
.content-area {
    padding: 2rem;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

/* Stat Cards */
.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-blue);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-card-title {
    font-size: 0.875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-card-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    opacity: 0.2;
}

/* ============================================
   TABLAS MODERNAS
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    background: white;
}

.table-modern {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table-modern thead {
    background: var(--gray-50);
}

.table-modern th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--gray-200);
}

.table-modern td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
}

.table-modern tbody tr {
    transition: background 0.2s ease;
}

.table-modern tbody tr:hover {
    background: var(--gray-50);
}

/* Action Buttons */
.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0 0.25rem;
}

.action-btn:hover {
    transform: scale(1.1);
}

.action-btn-edit {
    background: var(--info);
    color: white;
}

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

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

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

/* ============================================
   BUSCADOR
   ============================================ */
.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 68, 148, 0.1);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.2rem;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.badge-success {
    background: #c6f6d5;
    color: #22543d;
}

.badge-warning {
    background: #feebc8;
    color: #7c2d12;
}

.badge-danger {
    background: #fed7d7;
    color: #742a2a;
}

.badge-info {
    background: #bee3f8;
    color: #1e40af;
}

/* ============================================
   BOTONES
   ============================================ */
.btn-primary {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: var(--gray-300);
}

/* ============================================
   FORMULARIOS
   ============================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 68, 148, 0.1);
}

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

.pagination-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    color: var(--gray-700);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.pagination-btn:hover {
    background: var(--gray-50);
    border-color: var(--primary-blue);
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .topbar {
        padding: 1rem;
    }
    
    .content-area {
        padding: 1rem;
    }
    
    .stat-card-value {
        font-size: 1.5rem;
    }
    
    .table-modern {
        font-size: 0.8rem;
    }
    
    .table-modern th,
    .table-modern td {
        padding: 0.75rem 0.5rem;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.text-muted {
    color: var(--gray-500);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-primary {
    color: var(--primary-blue);
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }