:root {
    --primary-color: #0d6efd; /* Azul primario de Bootstrap */
    --secondary-color: #6c757d; /* Gris secundario */
    --success-color: #198754; /* Verde de éxito */
    --light-bg: #f8f9fa;
    --dark-bg: #212529;
    --gold-accent: #FFD700;
    --font-family: 'Poppins', sans-serif; /* Una fuente más moderna */
}

body {
    background-color: var(--light-bg);
    font-family: var(--font-family);
}

/* --- Header y Logo --- */
.main-header {
    background: linear-gradient(135deg, #007bff 0%, #0d6efd 100%);
    color: white;
    padding: 2rem 0;
}

.app-logo {
    max-width: 120px;
    height: auto;
    border-radius: 50%;
    border: 3px solid var(--gold-accent);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Variante pequeña del logo para cabeceras secundarias */
.app-logo-sm {
    max-width: 80px;
    border-width: 2px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* --- Tarjetas de Rifa --- */
.raffle-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.raffle-card .card-img-top {
    height: 200px; /* Altura fija para todas las imágenes de tarjeta */
    object-fit: cover; /* Asegura que la imagen cubra el espacio sin deformarse */
    width: 100%;
}

.raffle-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15) !important;
}

.raffle-card .card-title {
    font-weight: 600;
}

.raffle-card .btn-primary {
    background-color: var(--primary-color);
    border: none;
    transition: background-color 0.3s ease;
}

.raffle-card .btn-primary:hover {
    background-color: #0b5ed7;
}

/* --- Footer --- */
.main-footer {
    background-color: #e9ecef;
    border-top: 1px solid #dee2e6;
}

.main-footer .bi {
    transition: color 0.3s ease;
}

.main-footer .bi:hover {
    color: var(--primary-color) !important;
}

/* --- Admin Login --- */
.login-page {
    background: linear-gradient(135deg, #6c757d 0%, #343a40 100%);
}

.login-form-container {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* --- Admin Panel --- */
.admin-panel-nav {
    background-color: var(--dark-bg) !important;
}

.admin-panel-nav .navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-panel-nav .app-logo {
    max-width: 40px;
    border-width: 2px;
    box-shadow: none;
}

.nav-tabs .nav-link {
    color: var(--secondary-color);
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* --- Mejoras para Móviles --- */
@media (max-width: 767.98px) {
    .main-header .display-4 {
        font-size: 2.5rem; /* Título más pequeño en móviles */
    }
    .raffle-card .card-body {
        padding: 1rem;
    }
}