:root {
    --bs-body-bg: #f4f5f7;
    --bs-body-color: #111827;
    --bs-primary: #1f2937;
    --bs-primary-rgb: 31, 41, 55;
    --bs-secondary: #64748b;
    --bs-success: #475569;
    --bs-info: #94a3b8;
    --bs-warning: #78716c;
    --bs-danger: #7f1d1d;
    --bs-light: #FFFFFF;
    --bs-dark: #111827;
    --bs-border-radius: 0.5rem;
    --bs-border-color: #d1d5db;
    --bs-link-color: #374151;
    --bs-link-hover-color: var(--bs-primary);
}

/* === GLOBAL === */
body {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* === NAVBAR === */
.navbar {
    background-color: var(--bs-primary) !important;
}

.navbar-brand, .navbar-nav .nav-link {
    color: #f8f9fa !important;
    transition: color 0.2s ease;
}

    .navbar-nav .nav-link:hover {
        color: #e5e7eb !important;
    }

/* === CARDS === */
.card {
    border: none;
    border-radius: var(--bs-border-radius);
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    background-color: var(--bs-light);
}

.card-header {
    font-weight: 600;
    background-color: var(--bs-primary);
    color: #f8f9fa;
    border-bottom: 0;
}

/* === BOTONES === */
.btn {
    border-radius: 0.4rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: all 0.2s ease-in-out;
}

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

    .btn-primary:hover {
        background-color: #374151;
        border-color: #374151;
    }

.btn-outline-primary {
    color: var(--bs-primary);
    border-color: var(--bs-primary);
}

    .btn-outline-primary:hover {
        background-color: var(--bs-primary);
        color: #fff;
    }

/* === TABLAS === */
.table thead {
    background-color: var(--bs-primary);
    color: #f8f9fa;
}

.table-hover tbody tr:hover {
    background-color: rgba(31, 41, 55, 0.06);
}

/* === FORMULARIOS === */
.form-control, .form-select {
    border-radius: 0.4rem;
    border-color: #ced4da;
}

    .form-control:focus, .form-select:focus {
        border-color: var(--bs-secondary);
        box-shadow: 0 0 0 0.25rem rgba(100, 116, 139, 0.2);
    }

/* === ALERTAS === */
.alert {
    border: none;
    border-radius: 0.5rem;
}

.alert-success {
    background-color: var(--bs-success);
    color: #fff;
}

.alert-warning {
    background-color: var(--bs-warning);
    color: #222;
}

.alert-danger {
    background-color: var(--bs-danger);
    color: #fff;
}

/* === FOOTER === */
footer {
    background-color: transparent;
    color: inherit;
    padding: 1rem 0;
}

    footer a {
        color: #475569;
        text-decoration: none;
    }

        footer a:hover {
            text-decoration: underline;
        }

/* === TITULOS === */
h1, h2, h3, h4, h5 {
    font-family: "Inter", "Segoe UI", Roboto, sans-serif;
    font-weight: 600;
    color: var(--bs-primary);
}

/* === SCROLLBAR SUAVE (Opcional) === */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #eee;
}

::-webkit-scrollbar-thumb {
    background-color: #94a3b8;
    border-radius: 10px;
}