:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --pending: #94a3b8;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.5;
    margin: 0;
}

.vm-container {
    max-width: 98%;
    margin: 2rem auto;
    padding: 0 1rem;
}

h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(to right, var(--primary), #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    border: 1px solid var(--border);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.card-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--border);
    color: var(--text-muted);
}

.status-badge.active {
    background: #dcfce7;
    color: #166534;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}

.form-grid div {
    display: flex;
    flex-direction: column;
}

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

input, select {
    padding: 0.625rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s;
}

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

button, .btn-style {
    cursor: pointer;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

button.primary:hover, .btn-style.primary:hover {
    background: var(--primary-hover);
}

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

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

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

button.secondary:hover {
    background: var(--bg);
}

.km-btn {
    margin-top: 0.5rem;
    background: #f1f5f9;
    color: var(--primary);
    border: 1px solid #cbd5e1;
}

/* Selector styles */
.selector-row {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

#vehicleSelector {
    flex: 1;
}

/* Table styles */
.table-responsive {
    overflow-x: auto;
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

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

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

tr:hover {
    background: #f8fafc;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge.vencido { background: #fee2e2; color: #991b1b; }
.badge.alerta { background: #fef3c7; color: #92400e; }
.badge.normal { background: #dcfce7; color: #166534; }
.badge.pendiente { background: #f1f5f9; color: #475569; }

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-sm.history { color: var(--success); background: #f0fdf4; border: 1px solid #bbf7d0; }
.btn-sm.edit { color: var(--primary); background: #eff6ff; border: 1px solid #bfdbfe; }
.btn-sm.delete { color: var(--danger); background: #fef2f2; border: 1px solid #fecaca; }

/* Filter chips */
.estado-filter {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.estado-chip {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    cursor: pointer;
    background: var(--bg);
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.estado-chip:hover {
    border-color: var(--primary);
}

.estado-chip.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.counter {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    .selector-row {
        flex-direction: column;
    }
    .vm-top-nav {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    .vm-top-nav .btn-nav {
        width: 100%;
        display: block;
        padding: 10px;
        background: #f1f5f9;
        border-radius: 8px;
        box-sizing: border-box;
    }
    .filtros-grid {
        flex-direction: column;
        display: flex;
        gap: 1rem;
    }
    .table-responsive {
        border: 0;
    }
    /* Mejora de botones en móvil */
    .top-buttons {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .top-buttons button {
        width: 100%;
    }
}

/* Nuevos estilos de Navegación */
.vm-top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background: #ffffff;
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.btn-nav {
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-nav:hover {
    background: #f1f5f9;
}

.top-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}