body {
    font-family: 'Inter', system-ui, sans-serif;
    padding: 40px 20px;
    max-width: 900px;
    margin: auto;
    background: #141414;
    color: #f8fafc;
}

.panel {
    background: #000000;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #333;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.panel h2 {
    color: #e50914;
    margin-top: 0;
    margin-bottom: 20px;
}

input[type="email"] {
    padding: 12px 16px;
    width: 320px;
    border: 1px solid #333;
    border-radius: 4px;
    background: #333;
    color: #fff;
    outline: none;
    transition: border-color 0.3s;
}

input[type="email"]:focus {
    border-color: #e50914;
}

button {
    padding: 12px 24px;
    background: #e50914;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: background 0.3s;
}

button:hover {
    background: #b20710;
}

.registro {
    background: #111;
    border: 1px solid #222;
    border-radius: 8px;
    margin-bottom: 24px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.registro-header {
    background: #e50914;
    color: white;
    padding: 16px 20px;
}

.registro-header h3 {
    margin: 0 0 4px 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.registro-header small {
    color: rgba(255, 255, 255, 0.8);
}

.iframe-container {
    width: 100%;
    height: 600px;
    overflow: auto;
    -webkit-overflow-scrolling: touch; /* Permite scroll suave en iOS */
}
iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
    /* Se mantiene blanco para no dañar el diseño de los correos */
    display: block;
}

.error {
    color: #ff4d4d;
    font-weight: bold;
    margin-top: 15px;
}

p {
    color: #94a3b8;
}