:root {
    --primary-color: #C8202E; /* Rojo Esguar */
    --secondary-color: #1A1A1A; /* Gris Oscuro */
    --background-color: #F4F4F4;
    --text-color: #1A1A1A;
    --white: #FFFFFF;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Barlow', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 1rem;
    text-align: center;
    border-bottom: 4px solid var(--primary-color);
    margin-bottom: 20px;
}

h1 {
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Form Styles */
.form-card {
    background-color: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

select, input, textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #DDD;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: #FAFAFA;
}

select:focus, input:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Button Styles */
.btn {
    display: block;
    width: 100%;
    padding: 18px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    transition: background 0.3s ease;
    text-transform: uppercase;
}

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

.btn-primary:active {
    background-color: #A01A25;
}

.btn-secondary {
    background-color: #DDD;
    color: #333;
    margin-top: 10px;
}

/* Canvas / Firma Styles */
.signature-container {
    margin-top: 10px;
    border: 2px dashed #C8202E;
    background-color: #FFF;
    border-radius: var(--border-radius);
    overflow: hidden;
    touch-action: none; /* Crucial para evitar scroll */
}

#signature-canvas {
    display: block;
    width: 100%;
    height: 200px;
    cursor: crosshair;
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .btn {
        padding: 22px; /* Más grande para dedos bajo el sol */
    }
}