/* --- Variables de Marca --- */
:root {
    --primary-red: #d32f2f;
    --dark-red: #b71c1c;
    --light-red: #ffcdd2;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --text-dark: #212121;
    --text-muted: #757575;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* --- Reset y General --- */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
}

/* --- Navegación --- */
.navbar {
    background-color: var(--primary-red) !important;
    box-shadow: var(--shadow);
    padding: 1rem 2rem;
}

.navbar-brand, .nav-link {
    color: var(--white) !important;
    font-weight: 600;
    transition: opacity 0.3s;
}

.nav-link:hover {
    opacity: 0.8;
}

/* --- Contenedores y Tarjetas --- */
.card {
    background: var(--white);
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

.card-header {
    background-color: var(--white);
    border-bottom: 2px solid var(--light-bg);
    padding: 1.25rem;
    font-weight: 700;
    color: var(--primary-red);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Botones --- */
.btn {
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: none;
}

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

.btn-primary:hover {
    background-color: var(--dark-red);
    border-color: var(--dark-red);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

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

.btn-outline-danger:hover {
    background-color: var(--primary-red);
    color: var(--white);
}

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

.table thead th {
    background-color: var(--light-bg);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
    border-top: none;
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-top: 1px solid var(--border-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(211, 47, 47, 0.02);
}

/* --- Formularios --- */
.form-control {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* --- Login Page --- */
.login-body {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    border-radius: 20px;
}

.login-logo {
    color: var(--primary-red);
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
}

/* --- Utilidades --- */
.text-primary-red { color: var(--primary-red) !important; }
.bg-primary-red { background-color: var(--primary-red) !important; }

@media (max-width: 768px) {
    .card { margin-bottom: 1rem; }
}