.auth-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.auth-modal.active { display: flex; }

.auth-modal-content {
    background: var(--bg-secundario);
    border-radius: 12px;
    width: 90%;
    max-width: 420px;
    border: 1px solid var(--borde-medio);
    box-shadow: var(--sombra-profunda);
    position: relative;
    animation: fadeInUp 0.25s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--borde-sutil);
    margin-bottom: 20px;
}

.auth-tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 14px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 16px;
    color: var(--texto-sutil);
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-tab-btn:hover {
    color: var(--aqua-brillante);
    background: rgba(0, 170, 170, 0.1);
}

.auth-tab-btn.active {
    color: var(--aqua-claro);
    border-bottom: 2px solid var(--aqua-claro);
}

.auth-form {
    padding: 0 24px 24px;
    display: none;
}

.auth-form.active { display: block; }

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: var(--texto-secundario);
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-elevado);
    border: 1px solid var(--borde-sutil);
    border-radius: 6px;
    color: var(--texto-primario);
    font-family: 'Lato', sans-serif;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--teal-vibrante);
}

.auth-submit {
    width: 100%;
    padding: 11px;
    background: var(--gradiente-acento);
    border: none;
    border-radius: 6px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 15px;
    color: #111;
    cursor: pointer;
    transition: opacity 0.2s;
    margin-top: 8px;
}

.auth-submit:hover { opacity: 0.9; }

.auth-error {
    color: #ff7b72;
    font-size: 13px;
    margin: 10px 0 0;
    font-family: 'Lato', sans-serif;
}

.mensaje-bloqueo {
    text-align: center;
    padding: 60px 24px;
    background: var(--bg-tarjeta);
    margin: 40px 24px;
    border-radius: 12px;
    border: 1px solid var(--borde-medio);
    font-family: 'Montserrat', sans-serif;
}

.mensaje-bloqueo p:first-child {
    font-size: 20px;
    font-weight: 700;
    color: var(--aqua-claro);
    margin-bottom: 12px;
}

.mensaje-bloqueo p:last-child {
    color: var(--texto-secundario);
    font-size: 14px;
}