/* --- CONFIGURACIÓN GLOBAL --- */
body {
    font-family: 'Poppins', sans-serif;
    background-color: #f4f7f6; /* Gris muy suave, mejor para la vista */
    color: #495057;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #2c3e50;
}

/* --- SIDEBAR (Barra Lateral) --- */
.sidebar {
    min-height: 100vh;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%); /* Azul oscuro profundo */
    color: #fff;
    box-shadow: 4px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.sidebar .brand {
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
    padding: 25px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
    letter-spacing: 1px;
    color: #ffffff;
    text-transform: uppercase;
}

.sidebar .nav-link {
    color: #94a3b8; /* Gris azulado */
    font-weight: 500;
    padding: 12px 20px;
    margin-bottom: 5px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
    color: #fff;
    background-color: rgba(255,255,255,0.1);
    padding-left: 25px; /* Efecto de desplazamiento */
}

.sidebar .nav-link.active {
    background-color: #3b82f6; /* Azul brillante */
    color: #fff;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.4);
}

.sidebar .nav-link i {
    margin-right: 10px;
    font-size: 1.2rem;
    vertical-align: middle;
}

/* --- TARJETAS (Cards) --- */
.card-box {
    border: none;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05); /* Sombra suave */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.card-box:hover {
    transform: translateY(-5px); /* Efecto de flotar al pasar el mouse */
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #f1f1f1;
    font-weight: 600;
    padding: 15px 20px;
}

/* --- TABLAS --- */
.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: #f8fafc;
    color: #64748b;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    border-bottom: 2px solid #e2e8f0;
    padding: 15px;
}

.table tbody td {
    padding: 15px;
    vertical-align: middle;
    border-bottom: 1px solid #f1f5f9;
}

.table-hover tbody tr:hover {
    background-color: #f8fafc;
}

/* --- BOTONES --- */
.btn {
    border-radius: 8px;
    padding: 8px 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #3b82f6;
    border-color: #3b82f6;
}

.btn-primary:hover {
    background-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-success {
    background-color: #10b981;
    border-color: #10b981;
}

.btn-success:hover {
    background-color: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* --- BADGES (Etiquetas de estado) --- */
.badge {
    padding: 6px 10px;
    border-radius: 6px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* --- INPUTS --- */
.form-control, .form-select {
    border-radius: 8px;
    padding: 10px 15px;
    border: 1px solid #e2e8f0;
    background-color: #f8fafc;
}

.form-control:focus, .form-select:focus {
    background-color: #fff;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}