:root {
    --primary-color: #761C3F;
    --primary-light: #8d2a4d;
    --primary-dark: #5a152f;
    --secondary-color: #2c5a8c;
    --accent-color: #4a90e2;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --neutral-gray: #6c757d;
    --light-gray: #e9ecef;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: white;
    color: var(--dark-color);
    min-height: 100vh;
    overflow-x: hidden;
}

.registro-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.registro-form {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    padding: 30px;
    width: 100%;
    max-width: 1400px;
    border: 2px solid #5a152f;
    backdrop-filter: blur(10px);
}

.logo-registro {
    text-align: center;
    margin-bottom: 20px;
}

.logo-registro img {
    max-height: 80px;
    width: auto;
}

.form-title {
    text-align: center;
    color: var(--primary-color);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.form-subtitle {
    text-align: center;
    color: var(--neutral-gray);
    margin-bottom: 25px;
    font-size: 1rem;
}

/* Organizar formulario en filas de 4 columnas */
.form-rows {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    align-items: start;
}

.form-group {
    margin-bottom: 0; /* Quitamos margin-bottom porque lo controlamos con gap */
}

.form-label {
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--dark-color);
    font-size: 0.85rem;
}

.form-control {
    border-radius: 8px;
    border: 2px solid var(--light-gray);
    padding: 10px 12px;
    font-size: 0.9rem;
    transition: all 0.3s;
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(118, 28, 63, 0.25);
}

.password-requirements {
    font-size: 0.7rem;
    color: var(--neutral-gray);
    margin-top: 3px;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 8px;
    padding: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    width: 100%;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(118, 28, 63, 0.3);
}

.aviso-privacidad {
    margin: 15px 0;
    padding: 12px;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.back-login {
    text-align: center;
    margin-top: 15px;
}

.back-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

.back-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Campos que ocupan 2 columnas */
.double-width {
    grid-column: span 2;
}

/* Campos que ocupan 4 columnas */
.full-width {
    grid-column: 1 / -1;
}

/* Responsive */
@media (max-width: 1400px) {
    .registro-form {
        max-width: 1200px;
        padding: 25px;
    }
}

@media (max-width: 1200px) {
    .registro-form {
        max-width: 1000px;
    }
    
    .form-row {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas en laptops */
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .registro-form {
        padding: 20px;
        max-width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr; /* 1 columna en móviles */
        gap: 15px;
    }
    
    .form-title {
        font-size: 1.8rem;
    }
    
    .logo-registro img {
        max-height: 60px;
    }
}