:root {
    --primary: #10b981; 
    --primary-dark: #059669;
    --secondary: #334155; 
    --dark-bg: #1e293b;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-bg);
    color: var(--secondary);
}

.navbar {
    background: var(--white) !important;
    padding: 1.2rem;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.navbar-brand { font-weight: 700; color: var(--dark-bg) !important; }
.nav-link { font-weight: 500; transition: color 0.3s; }
.nav-link.active { color: var(--primary) !important; border-bottom: 2px solid var(--primary); }

.hero-section {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 100px 0;
    border-radius: 0 0 50px 50px;
    color: white;
}

.hero-section h2 { font-weight: 700; margin-bottom: 20px; }

form.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    transform: translateY(20px);
}

#resultado .card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    height: 100%;
}

#resultado .card:hover {
    transform: translateY(-10px);
}

.card-img-top {
    height: 250px;
    object-fit: cover;
}


.btn-receta {
    background-color: var(--dark-bg);
    color: white;
    border-radius: 12px;
    padding: 12px;
    border: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-receta:hover {
    background-color: var(--primary);
    color: white;
}

.modal-content { border: none; border-radius: 25px; overflow: hidden; }
.modal-header { background: var(--primary); color: white; border: none; }
.modal-header .btn-close { filter: invert(1); }
.list-group-item { border-left: 5px solid var(--primary); margin-bottom: 5px; background: #f1f5f9; border-radius: 8px !important; }

.toast-success { background-color: var(--primary) !important; color: white !important; }
.toast-danger { background-color: #ef4444 !important; color: white !important; }