/* Invitación: una columna como base; expansión progresiva a pantallas amplias. */
.invitation-header {
    position: sticky;
    top: 0;
    z-index: 12;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: 112px;
    padding: calc(8px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 8px max(16px, env(safe-area-inset-left));
    background: rgba(11,11,11,.97);
    border-bottom: 1px solid var(--border);
    transition: transform .28s ease;
}
.nav-hidden .invitation-header { transform: translateY(-105%); }
.invitation-header nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); width: min(100%, 300px); margin-inline: auto; gap: 4px; }
.invitation-header nav a { display: flex; align-items: center; justify-content: center; min-height: 44px; padding: 7px 0; }
.invitation-hero { position: relative; isolation: isolate; display: flex; flex-direction: column; justify-content: center; min-height: 0; padding-block: 62px 85px; text-align: center; background: radial-gradient(ellipse at 50% 42%,#332a1c 0%,#181510 38%,#0b0b0b 75%); }
.invitation-copy { width: 100%; max-width: 1100px; margin-inline: auto; padding: 0 var(--gutter); }
.invitation-copy > .eyebrow { margin-bottom: 24px; }
.anniversary-number { position: relative; display: inline-block; padding-right: 12px; color: var(--gold); }
.anniversary-number > span { display: block; margin-top: 18px; padding-left: 5px; }
.anniversary-number::after { content: ''; display: block; height: 1px; width: 70%; margin: 24px auto 0; background: linear-gradient(90deg,transparent,var(--gold),transparent); }
.invitation-copy h1 { margin: 28px 0 22px; }
.invitation-copy .hero-description { margin-bottom: 24px; }
.hero-message { max-width: 620px; margin: 30px auto 8px; font-size: 18px; line-height: 1.8; color: var(--text); }
.invitation-ornament { position: absolute; inset: 18px 12px; z-index: -1; border: 1px solid #c6a66722; pointer-events: none; }
.hero-bottom { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 5px var(--gutter) 40px; color: var(--muted); }
.hero-bottom > span:last-child { display: none; }
.scroll-cue { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; }
.scroll-cue span { animation: cue 2s ease-in-out infinite; }
.invitation-message { padding: 75px var(--gutter); text-align: center; background: #11100e; }
.invitation-message h2 { margin-bottom: 32px; }
.invitation-message h2 em, .rsvp h2 em { color: var(--gold); }
.invitation-letter { max-width: 620px; margin-inline: auto; }
.invitation-letter p { margin-bottom: 26px; }
.invitation-letter strong { color: var(--text); font-weight: 500; }
.message-signature { display: block; margin-top: 35px; color: var(--gold); }
.event-section { max-width: 1050px; }
.event-heading { text-align: center; margin-bottom: 38px; }
.event-heading h2 { margin-bottom: 24px; }
.event-heading h2.eyebrow { font-family: var(--sans); font-size: 14px; line-height: 1.6; letter-spacing: 1px; margin-bottom: 0; }
.event-facts { margin: 0; }
.event-facts > div { display: grid; grid-template-columns: minmax(0,1fr); gap: 12px; padding: 23px 0; border-bottom: 1px solid var(--border); }
.event-facts > div:first-child { border-top: 1px solid var(--border); }
.event-facts dd { margin: 0; }
.event-location { text-align: center; margin-top: 30px; }
.event-location .rsvp-button { display: flex; width: 100%; max-width: 480px; margin: 16px auto 0; }
.location-button { width: 100%; padding: 17px 22px; min-height: 60px; border: 1px solid var(--gold); background: var(--bg); color: var(--gold); }
.event-location .pending { display: block; max-width: 350px; margin: 14px auto 0; }
.access-qr-button { display: flex; justify-content: center; width: 100%; max-width: 480px; min-height: 60px; margin: 16px auto 0; padding: 16px 22px; border: 1px dashed var(--border); border-radius: 8px; background: var(--surface); text-align: center; }
.event-dress { text-align: center; margin: 35px 0 0; }
.event-dress span { display: block; margin-bottom: 12px; }
.invitation-rsvp { text-align: center; padding-inline: var(--gutter); border-top: 1px solid var(--border); background: radial-gradient(ellipse at center,#252016,#11100e 72%); }
.rsvp-inner { max-width: 650px; margin-inline: auto; }
.invitation-rsvp h2 { margin-bottom: 28px; }
.rsvp-button { display: inline-flex; align-items: center; justify-content: space-between; width: 100%; max-width: 380px; min-height: 64px; gap: 12px; padding: 17px 18px; margin-top: 20px; border: 1px solid var(--gold); background: var(--gold); color: #17130c; transition: background .25s; }
.rsvp-button > span { flex-shrink: 0; }
.rsvp-button:disabled { background: #b89c68; }
.rsvp-note { margin-top: 18px; }
.gifts-intro { background: #191919; border-top: 1px solid #c6a66766; }
.gifts-subtitle { color: var(--text); margin: 28px auto 20px; }
.gifts-intro .line-button { margin-top: 20px; }
@media (min-width: 640px) {
    :root { --header-space: 100px; }
    .invitation-header { flex-direction: row; justify-content: space-between; min-height: 76px; padding-inline: var(--gutter); gap: 24px; }
    .invitation-header nav { max-width: 440px; }
    .invitation-hero { min-height: 0; padding-block: 65px 82px; }
    .invitation-copy { padding-block: 0; }
    .invitation-ornament { inset: 22px 4%; }
    .invitation-message { padding-block: 100px; }
    .event-facts > div { grid-template-columns: 130px minmax(0,1fr); gap: 28px; align-items: baseline; padding-block: 27px; }
    .location-button { width: auto; min-width: 280px; }
    .rsvp-button { width: auto; gap: 30px; padding-inline: 28px; }
}
@media (min-width: 960px) {
    .invitation-header { padding-inline: 5%; }
    .invitation-header nav { max-width: 520px; }
    .hero-bottom { flex-direction: row; justify-content: space-between; padding-inline: 6%; }
    .hero-bottom > span:last-child { display: inline; }
    .invitation-message { padding-block: 130px; }
    .event-heading { margin-bottom: 60px; }
    .event-facts > div { grid-template-columns: 160px minmax(0,1fr); gap: 35px; }
}
@media (hover: hover) and (pointer: fine) {
    .invitation-header nav a:hover { color: var(--gold); }
    .location-button:not(:disabled):hover { background: var(--gold); color: var(--bg); border-color: var(--gold); }
    .rsvp-button:not(:disabled):hover { background: #dcc38e; }
}