.lb-invitacion {
    --lb-cyan: #15e7ff;
    --lb-magenta: #ff2ed1;
    --lb-bg: #090a22;
    --lb-card: rgba(12, 14, 45, 0.92);
    --lb-text: #ffffff;
    max-width: 1180px;
    margin: 30px auto;
    padding: clamp(20px, 4vw, 42px);
    color: var(--lb-text);
    background:
        radial-gradient(circle at 15% 10%, rgba(0, 220, 255, .18), transparent 34%),
        radial-gradient(circle at 85% 5%, rgba(255, 0, 215, .17), transparent 32%),
        linear-gradient(145deg, #08091f, #11113a 60%, #08091f);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 24px;
    box-shadow: 0 18px 60px rgba(0,0,0,.35);
    font-family: Arial, Helvetica, sans-serif;
}

.lb-invitacion *, .lb-invitacion *::before, .lb-invitacion *::after { box-sizing: border-box; }

.lb-invitacion__intro { text-align: center; margin-bottom: 28px; }
.lb-invitacion__eyebrow {
    display: inline-block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
    color: var(--lb-cyan);
}
.lb-invitacion__intro h2 {
    margin: 0 0 8px;
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.05;
    color: #fff;
}
.lb-invitacion__intro p { margin: 0; color: rgba(255,255,255,.78); }

.lb-invitacion__grid {
    display: grid;
    grid-template-columns: minmax(280px, .8fr) minmax(320px, 1.2fr);
    gap: clamp(22px, 4vw, 46px);
    align-items: start;
}

.lb-invitacion__form {
    padding: 24px;
    background: var(--lb-card);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 18px;
    position: sticky;
    top: 24px;
}
.lb-invitacion__form label { display: block; margin-bottom: 18px; }
.lb-invitacion__form label > span {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
}
.lb-invitacion__form input,
.lb-invitacion__form select {
    width: 100%;
    min-height: 48px;
    padding: 11px 14px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 12px;
    background: rgba(255,255,255,.08);
    color: #fff;
    font-size: 16px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
    color-scheme: dark;
}
.lb-invitacion__form input:focus,
.lb-invitacion__form select:focus {
    border-color: var(--lb-cyan);
    box-shadow: 0 0 0 3px rgba(21,231,255,.14);
}

.lb-time-selects {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 10px;
    align-items: center;
}
.lb-time-selects select {
    width: 100%;
    min-height: 48px;
    padding: 11px 14px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 12px;
    background: rgba(255,255,255,.08);
    color: #fff;
    font-size: 16px;
    outline: none;
    color-scheme: dark;
}
/* El desplegable nativo de Chrome/Windows usa un fondo claro al abrirse.
   Forzamos las opciones a texto oscuro para que todas sean legibles. */
.lb-time-selects select option {
    color: #111827;
    background: #ffffff;
    font-weight: 600;
}
.lb-time-selects select option:checked {
    color: #111827;
    background: #8fc4ff;
    font-weight: 800;
}
.lb-time-selects select option:hover,
.lb-time-selects select option:focus {
    color: #111827;
    background: #dbeafe;
}
.lb-time-separator {
    font-weight: 900;
    font-size: 20px;
    color: #fff;
}

.lb-invitacion__actions { display: grid; gap: 10px; margin-top: 8px; }
.lb-invitacion__actions button {
    width: 100%;
    min-height: 50px;
    padding: 11px 18px;
    border: 0;
    border-radius: 12px;
    font-weight: 900;
    font-size: 15px;
    cursor: pointer;
    transition: transform .15s ease, opacity .15s ease;
}
.lb-invitacion__actions button:hover:not(:disabled) { transform: translateY(-1px); }
.lb-preview-btn {
    background: linear-gradient(90deg, var(--lb-cyan), var(--lb-magenta));
    color: #08091f;
}
.lb-download-btn { background: #fff; color: #0b0c27; }
.lb-download-btn:disabled { opacity: .42; cursor: not-allowed; }
.lb-invitacion__status { min-height: 20px; margin: 12px 0 0; font-size: 13px; color: rgba(255,255,255,.72); }

.lb-invitacion__preview-wrap {
    padding: 14px;
    border-radius: 18px;
    background: rgba(0,0,0,.22);
    border: 1px solid rgba(255,255,255,.1);
}
.lb-invitacion__preview-title {
    margin: 2px 4px 12px;
    font-size: 13px;
    font-weight: 800;
    color: rgba(255,255,255,.72);
}
.lb-invitacion__canvas {
    display: block;
    width: 100%;
    height: auto;
    background: #050610;
    border-radius: 12px;
    box-shadow: 0 12px 38px rgba(0,0,0,.35);
}

@media (max-width: 820px) {
    .lb-invitacion { margin: 18px 0; border-radius: 18px; }
    .lb-invitacion__grid { grid-template-columns: 1fr; }
    .lb-invitacion__form { position: static; }
}