:root {
    --electric-blue: #007BFF;
    --coral-pink: #FF6B7A;
    --dark-blue: #1a365d;
    --light-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --coral-gradient: linear-gradient(135deg, #FF6B7A 0%, #4ECDC4 100%);
}

body {
    background: linear-gradient(135deg, #f8f9ff 0%, #e6f2ff 100%);
    min-height: 100vh;
}

.navbar-custom {
    background: var(--light-gradient) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: var(--electric-blue);
    border: none;
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    background: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.text-danger {
    color: var(--coral-pink) !important;
    font-weight: 500;
    padding: 10px 15px;
    background: rgba(255, 107, 122, 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--coral-pink);
}

.text-danger::before {
    content: "⚠️ ";
    margin-right: 8px;
}

.btn-coral {
    background: var(--coral-pink);
    border: none;
    color: white;
    transition: all 0.3s ease;
    border-radius: 25px;
    padding: 8px 20px;
}

.btn-coral:hover {
    background: #ff5566;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 122, 0.3);
    color: white;
}

.nav-link {
    transition: all 0.3s ease;
    border-radius: 20px;
    margin: 0 5px;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.container-main {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
    padding: 0;
    overflow: hidden;
}

/* Contenedor main pequeño */
/* Contenedor main pequeño para formularios y elementos compactos */
.container-main-sm {
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    margin: 10px auto;
    max-width: 900px;
    backdrop-filter: blur(10px);
}

.footer-custom {
    background: var(--dark-blue);
    color: white;
    margin-top: 50px;
    border-radius: 20px 20px 0 0;
    padding: 30px 0;
}

.form-control,
.form-select {
    border: 2px solid #e3f2fd;
    border-radius: 8px;
    padding: 10px 15px;
    transition: border-color 0.3s ease;
    background: #fafbff;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--electric-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    background: white;
}

.form-label {
    color: var(--dark-blue);
    font-weight: 600;
}

/* Estilo para resultados */
.col-12.d-flex>div {
    background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    width: 100%;
    box-shadow: 0 5px 20px rgba(78, 205, 196, 0.3);
}

.col-12.d-flex h4 {
    font-weight: 700;
    margin-bottom: 15px;
}

.col-12.d-flex .small {
    background: rgba(255, 255, 255, 0.15);
    padding: 15px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.95em !important;
    line-height: 1.6;
}