/* ====== RESETEO ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    position: relative;
    background: url('../img/portada\ para\ el\ inicio.jpg') no-repeat center center/cover;
}

/* Capa oscura */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 0;
}

/* ====== BARRA SUPERIOR ====== */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    z-index: 10;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
}

.logo .highlight {
    color: #f9b233;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #f9b233;
}

/* ====== CONTENEDOR PRINCIPAL ====== */
.main-content {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    /* formulario debajo de la barra */
    min-height: 100vh;
    /* altura mínima para que respete el padding */
    padding-top: 2cm;
    /* espacio desde la barra superior */
    padding-bottom: 2cm;
    /* espacio desde la parte inferior */
    z-index: 1;
    position: relative;
}

/* ====== FORMULARIO DE REGISTRO ====== */
.register-container {
    width: 95%;
    /* más ancho para aprovechar el espacio */
    max-width: 1000px;
    /* límite máximo para pantallas grandes */
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 40px 60px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
    color: #fff;
}


.register-container h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #fff;
    font-size: 28px;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
}

.register-container h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: #fff;
    font-weight: 600;
    font-size: 20px;
}

/* ====== FILAS Y CAMPOS ====== */
.form-section {
    margin-bottom: 20px;
}

.row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.input-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.input-group label {
    margin-bottom: 6px;
    font-size: 14px;
    color: #fff;
}

.input-group input {
    padding: 12px 15px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 14px;
    outline: none;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.8);
}

.full-width {
    width: 100%;
}

.short-width {
    width: 50%;
}

/* ====== BOTÓN ====== */
.button-container {
    text-align: center;
    margin-top: 30px;
}

.button-container button {
    padding: 12px 40px;
    border: none;
    border-radius: 25px;
    background: linear-gradient(135deg, rgba(106, 90, 249, 0.8), rgba(159, 127, 255, 0.8));
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

.button-container button:hover {
    opacity: 0.9;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
    .register-container {
        width: 90%;
        padding: 30px;
    }

    .row {
        flex-direction: column;
    }

    .short-width {
        width: 100%;
    }
}