body {
    font-family: 'Playfair Display', Georgia, serif;
    color: var(--invite-text, #4a3f35);
    background: var(--invite-bg, #fdfaf6);
    margin: 0;
}

.reveal-hidden {
    opacity: 0;
}

.falling-particle {
    position: fixed;
    top: -10vh;
    pointer-events: none;
    z-index: 9999;
    user-select: none;
    line-height: 1;
    animation-name: particle-fall;
    animation-timing-function: linear;
    animation-fill-mode: forwards;
    will-change: transform, opacity;
}

@keyframes particle-fall {
    from {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 1;
    }
    to {
        transform: translateY(120vh) translateX(var(--drift, 0px)) rotate(360deg);
        opacity: 0.85;
    }
}

.falling-particle-sparkle {
    border-radius: 50%;
    background: radial-gradient(circle, #fff 0%, var(--invite-accent, #d4af37) 45%, rgba(212, 175, 55, 0) 75%);
    box-shadow: 0 0 6px 2px var(--invite-accent, #d4af37), 0 0 12px 4px rgba(212, 175, 55, 0.45);
}

@keyframes particle-rise {
    0% {
        transform: translateY(0) translateX(0) scale(0.5);
        opacity: 0;
    }
    15% {
        opacity: 1;
    }
    50% {
        opacity: 0.55;
    }
    85% {
        opacity: 1;
    }
    100% {
        transform: translateY(-115vh) translateX(var(--drift, 0px)) scale(1);
        opacity: 0;
    }
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    padding: 0.75rem 0;
}

.section-divider img {
    width: clamp(56px, 20vw, calc(var(--divider-size, 64px) * 2));
    height: clamp(56px, 20vw, calc(var(--divider-size, 64px) * 2));
    object-fit: contain;
}

.section-divider-default {
    color: var(--invite-accent, #a9746e);
    font-size: clamp(28px, 10vw, var(--divider-size, 64px));
    line-height: 1;
}

.reveal-in {
    animation-name: var(--reveal-anim, anim-fade);
    animation-duration: 0.9s;
    animation-timing-function: ease-out;
    animation-fill-mode: forwards;
}

.reveal-done {
    opacity: 1;
}

@keyframes anim-fade {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes anim-slide-up {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes anim-slide-down {
    from { opacity: 0; transform: translateY(-40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes anim-slide-left {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes anim-slide-right {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes anim-zoom {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes anim-bounce {
    0% { opacity: 0; transform: translateY(-60px); }
    50% { opacity: 1; transform: translateY(10px); }
    70% { transform: translateY(-6px); }
    100% { opacity: 1; transform: translateY(0); }
}

body.font-elegant {
    font-family: 'Playfair Display', Georgia, serif;
}

body.font-modern {
    font-family: 'Montserrat', Arial, sans-serif;
}

body.font-script {
    font-family: 'Dancing Script', cursive;
}

body.font-script .invitation-names {
    font-size: 4rem;
}

body.font-script h2 {
    font-family: 'Dancing Script', cursive;
    font-size: 2.2rem;
}

body.font-classic {
    font-family: 'Times New Roman', Times, serif;
}

section {
    padding: 3rem 1.5rem;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

section.has-bg {
    max-width: none;
    width: 100%;
    padding: 4rem 1.5rem;
}

.section-inner {
    max-width: 900px;
    margin: 0 auto;
}

.invitation-footer p {
    font-style: italic;
    color: #8a7a6d;
    margin: 0;
}

.invitation-hero {
    max-width: none;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    position: relative;
    color: #fff;
}

.invitation-hero.no-cover {
    background: linear-gradient(135deg, #d8b4a0, var(--invite-accent, #a9746e));
}

.invitation-hero {
    padding: 2rem;
}

.invitation-hero.hero-pos-top-left {
    align-items: flex-start;
    justify-content: flex-start;
}
.invitation-hero.hero-pos-top-right {
    align-items: flex-start;
    justify-content: flex-end;
}
.invitation-hero.hero-pos-bottom-left {
    align-items: flex-end;
    justify-content: flex-start;
}
.invitation-hero.hero-pos-bottom-right {
    align-items: flex-end;
    justify-content: flex-end;
}

.invitation-hero-overlay.no-bg {
    background: none;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.65);
}

.invitation-hero-below {
    text-align: center;
    padding: 2.5rem 1.5rem;
}

.cover-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease;
    z-index: 0;
}

.cover-slide.active {
    opacity: 1;
    z-index: 1;
}

.invitation-hero-overlay {
    background: rgba(0, 0, 0, 0.35);
    padding: 3rem 2rem;
    border-radius: 8px;
    position: relative;
    z-index: 2;
}

.invitation-kicker {
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.invitation-guest-name {
    font-size: 1.1rem;
    font-style: italic;
    margin: 0.35rem 0 0;
    opacity: 0.95;
}

.invitation-names {
    font-size: 3rem;
    margin: 0.5rem 0;
}

.name-separator {
    display: inline-block;
    font-size: 0.55em;
    vertical-align: middle;
    margin: 0 0.25em;
}

.name-sep-double {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 1.15em;
    height: 1em;
}

.name-sep-double span {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.name-sep-double span:first-child {
    left: 0;
}

.name-sep-double .icon2 {
    left: 0.45em;
}

.invitation-host {
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    margin: -0.25rem 0 0.5rem;
    opacity: 0.9;
}

.invitation-date {
    font-size: 1.2rem;
    letter-spacing: 0.1em;
}

.lunar-date {
    font-style: italic;
    color: var(--invite-text, #4a3f35);
    font-size: 0.95rem;
}

.countdown-box {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.countdown-box div {
    display: flex;
    flex-direction: column;
}

.countdown-box span {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--invite-accent, #a9746e);
}

.invitation-message p {
    font-style: italic;
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

.invitation-events {
    max-width: 1100px;
}

.invitation-love-story {
    max-width: 900px;
}

.couple-portraits {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.couple-portrait-item img {
    width: 160px;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.couple-portrait-item p {
    margin-top: 0.6rem;
    font-weight: bold;
    color: var(--invite-accent, #a9746e);
    letter-spacing: 0.05em;
}

.love-story-timeline {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
    padding-left: 2rem;
    text-align: left;
}

.love-story-timeline::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: #d9c8ba;
}

.love-story-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.love-story-item:last-child {
    margin-bottom: 0;
}

.love-story-item::before {
    content: '';
    position: absolute;
    left: -1.75rem;
    top: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--invite-accent, #a9746e);
}

.love-story-item h3 {
    font-size: 1.2rem;
    color: var(--invite-accent, #a9746e);
    margin-bottom: 0.6rem;
}

.love-story-item p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--invite-text, #4a3f35);
    margin: 0;
}

.calendar-box {
    max-width: 480px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #e6ddd2;
    border-radius: 8px;
    padding: 1.5rem 1rem;
}

.calendar-title {
    letter-spacing: 0.15em;
    font-size: 1.1rem;
    color: var(--invite-text, #4a3f35);
    margin-bottom: 1rem;
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
}

.calendar-table th {
    font-weight: normal;
    font-size: 0.85rem;
    color: #8a7a6d;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid #e6ddd2;
}

.calendar-table td {
    text-align: center;
    padding: 0.5rem 0.2rem;
    font-size: 0.95rem;
    color: var(--invite-text, #4a3f35);
    vertical-align: middle;
}

.calendar-today {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #6b6259;
    color: #fff;
}

.calendar-marker {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
}

.calendar-marker-icon {
    position: absolute;
    inset: 0;
    color: #c0392b;
}

.calendar-marker-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
}

.calendar-marker-circle .calendar-marker-icon {
    color: var(--invite-accent, #a9746e);
}

.calendar-marker-day {
    position: relative;
    z-index: 1;
    color: #fff;
    font-size: 0.8rem;
    font-weight: bold;
}

.fp-heart-fill {
    fill: #c0392b;
}

.fp-ridges {
    fill: none;
    stroke: #fff;
    stroke-width: 1.1;
    opacity: 0.85;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.event-card p {
    margin: 0.15rem 0;
    font-size: 0.95rem;
}

.event-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f6ece6;
    color: var(--invite-accent, #a9746e);
    font-size: 1.6rem;
}

.event-card h3 {
    color: var(--invite-accent, #a9746e);
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.event-time-label {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
    color: #8a7a6d;
}

.invitation-giftbox {
    max-width: 1100px;
}

.giftbox-subtitle {
    color: var(--invite-text, #4a3f35);
    margin-bottom: 2rem;
}

.giftbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    text-align: left;
}

.giftbox-grid.single {
    grid-template-columns: minmax(220px, 320px);
    justify-content: center;
}

.giftbox-side {
    text-align: center;
}

.giftbox-side h3 {
    color: var(--invite-accent, #a9746e);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.giftbox-side p {
    text-align: left;
    max-width: 260px;
    margin: 0.25rem auto;
}

.giftbox-qr {
    margin-top: 1rem;
}

.map-qr-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.map-qr-image {
    width: 200px;
    height: 200px;
    object-fit: contain;
    background: #fff;
    border: 1px solid #e5d9d1;
    border-radius: 8px;
    padding: 0.5rem;
}

.giftbox-qr img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    background: #fff;
    border: 1px solid #e5d9d1;
    border-radius: 8px;
    padding: 0.4rem;
}

.giftbox-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.giftbox-center img {
    width: 100%;
    max-width: 320px;
    height: auto;
    object-fit: cover;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.giftbox-qr p {
    text-align: center;
    font-weight: bold;
    color: var(--invite-accent, #a9746e);
    font-size: 0.85rem;
    margin-top: 0.4rem;
}

.invitation-families {
    display: flex;
    gap: 3rem;
    justify-content: center;
    flex-wrap: wrap;
}

.family-card h3 {
    color: var(--invite-accent, #a9746e);
    margin-bottom: 0.75rem;
}

.gallery-grid.style-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
}

.gallery-grid.style-grid img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.gallery-grid.style-grid img:only-child {
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

/* Masonry dùng CSS Grid + JS tính "grid-row-end: span N" theo tỉ lệ thật của từng ảnh (xem
   masonry-grid.js) thay vì column-count — cách này xếp ảnh theo thứ tự đọc trái-sang-phải,
   trên-xuống-dưới (không phải đổ hết cột 1 rồi mới sang cột 2) nên các ảnh cuối cùng lên hàng
   đều đặn, không bị lệch cao thấp thất thường như kiểu multi-column. */
.gallery-grid.style-masonry {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 4px;
    gap: 0.5rem;
}

.gallery-grid.style-masonry img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

@media (min-width: 577px) {
    .gallery-grid.style-masonry {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 992px) {
    .gallery-grid.style-masonry {
        grid-template-columns: repeat(4, 1fr);
    }
}

.gallery-grid.style-carousel {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
}

.gallery-grid.style-carousel img {
    flex: 0 0 75%;
    max-width: 320px;
    height: 260px;
    object-fit: cover;
    scroll-snap-align: center;
}

.gallery-grid.style-carousel img:only-child {
    flex: 0 0 100%;
    max-width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

.gallery-grid img {
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s;
}

.gallery-grid.hover-zoom-in img:hover {
    transform: scale(1.08);
}

.gallery-grid.hover-zoom-out img:hover {
    transform: scale(0.92);
}

.gallery-grid.hover-none img:hover {
    transform: none;
}

.invitation-video {
    padding: 4rem 1.5rem;
    text-align: center;
}

.invitation-use-template {
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: #f6efe8;
}

.video-embed-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 1.5rem auto 0;
    padding-top: 56.25%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
}

.video-embed-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.rsvp-form {
    max-width: 480px;
    margin: 0 auto;
    text-align: left;
}

.rsvp-form button[type="submit"] {
    display: block;
    margin: 0 auto;
}

.wishes-wall {
    max-width: 480px;
    margin: 2.5rem auto 0;
    text-align: left;
}

.wishes-title {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.wishes-list {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    max-height: 420px;
    overflow-y: auto;
}

.wish-item {
    background: rgba(255, 255, 255, 0.6);
    border-radius: 10px;
    padding: 0.75rem 1rem;
}

.wish-note {
    margin: 0 0 0.35rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.wish-guest {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--invite-accent, #a9746e);
    text-align: right;
}

.invitation-share .section-inner {
    text-align: center;
}

.share-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: none;
    color: #fff;
    font-size: 1.4rem;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease;
    cursor: pointer;
}

.share-btn:hover {
    transform: translateY(-3px);
    color: #fff;
}

.share-btn svg {
    width: 26px;
    height: 26px;
}

.share-fb {
    background-color: #1877f2;
}

.share-zalo {
    background-color: #0068ff;
}

.share-x {
    background-color: #000;
}

.share-tiktok {
    background: linear-gradient(135deg, #25f4ee, #000 45%, #fe2c55);
}

.share-email {
    background-color: var(--invite-accent, #a9746e);
}

.share-tiktok-hint {
    margin-top: 0.75rem;
}

.btn-invitation {
    background-color: var(--invite-accent, #a9746e);
    color: #fff;
    border: none;
    padding: 0.6rem 2rem;
    border-radius: 30px;
}

.btn-invitation:hover {
    background-color: #8f5f5a;
    color: #fff;
}

#photoModalImg {
    max-height: 85vh;
    max-width: 100%;
    width: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.lightbox-close {
    position: absolute;
    top: -2.5rem;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.4);
    border: none;
    color: #fff;
    font-size: 1.5rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
}

.lightbox-nav:hover {
    background: rgba(0, 0, 0, 0.7);
}

.lightbox-prev {
    left: -1rem;
}

.lightbox-next {
    right: -1rem;
}

@media (max-width: 576px) {
    .lightbox-prev {
        left: 0.25rem;
    }

    .lightbox-next {
        right: 0.25rem;
    }
}

.music-toggle {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    border: none;
    background: var(--invite-accent, #a9746e);
    color: #fff;
    font-size: 1.3rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    z-index: 10;
    animation: none;
}

.music-toggle.playing {
    animation: music-spin 4s linear infinite;
}

@keyframes music-spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===== Mở thiệp (invite gate) ===== */
.invite-gate {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    background: var(--invite-bg, #fdfaf6);
    transition: opacity .6s ease, visibility .6s ease;
    padding: 20px;
}

.invite-gate.invite-gate-closing {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

body.invite-gate-active {
    overflow: hidden;
    height: 100vh;
}

.invite-gate-card-box {
    width: min(88vw, 340px);
    padding: 40px 28px;
    border: 1px solid var(--invite-accent, #a9746e);
    border-radius: 6px;
    text-align: center;
    background: var(--invite-bg, #fdfaf6);
    box-shadow: 0 20px 60px -20px rgba(0, 0, 0, .35);
    animation: gate-card-in .8s ease both;
}

@keyframes gate-card-in {
    from {
        opacity: 0;
        transform: translateY(24px) scale(.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.invite-gate-seal {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border: 1.5px solid var(--invite-accent, #a9746e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--invite-accent, #a9746e);
}

.invite-gate-names {
    font-size: 26px;
    margin: 0 0 6px;
    color: var(--invite-text, #4a3f35);
    line-height: 1.3;
}

.invite-gate-divider {
    width: 34px;
    height: 1px;
    margin: 14px auto;
    background: var(--invite-accent, #a9746e);
    opacity: .6;
}

.invite-gate-date {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--invite-text, #4a3f35);
    opacity: .85;
    margin: 0 0 20px;
}

.invite-gate-msg {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--invite-text, #4a3f35);
    margin: 0 0 26px;
}

.invite-gate-btn {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    background: var(--invite-accent, #a9746e);
    color: #fff;
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    cursor: pointer;
    transition: .2s;
}

.invite-gate-btn:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

.invite-gate-kicker {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 10.5px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--invite-accent, #a9746e);
    margin: 0 0 8px;
}

.invite-gate-tap-hint {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--invite-text, #4a3f35);
    opacity: .7;
}

.envelope {
    position: relative;
    width: min(78vw, 300px);
    aspect-ratio: 3 / 2;
    cursor: pointer;
}

.envelope-back {
    position: absolute;
    inset: 0;
    border-radius: 6px;
    background: var(--invite-bg, #fdfaf6);
    border: 1px solid var(--invite-accent, #a9746e);
    box-shadow: 0 20px 50px -20px rgba(0, 0, 0, .35);
}

.envelope-card {
    position: absolute;
    left: 8%;
    right: 8%;
    bottom: 6%;
    top: 14%;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, .15);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 14px;
    transform-origin: bottom center;
    transition: transform .7s cubic-bezier(.22, 1, .36, 1);
    z-index: 1;
}

.envelope-card-inner p {
    margin: 2px 0;
}

.envelope-flap {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 56%;
    background: linear-gradient(160deg, var(--invite-accent, #a9746e), var(--invite-accent, #a9746e));
    clip-path: polygon(0 0, 100% 0, 50% 62%);
    transform-origin: top center;
    transform: perspective(600px) rotateX(0deg);
    transition: transform .7s cubic-bezier(.22, 1, .36, 1);
    z-index: 2;
    box-shadow: 0 6px 14px rgba(0, 0, 0, .2);
}

.envelope.opened .envelope-flap {
    transform: perspective(600px) rotateX(180deg);
}

.envelope.opened .envelope-card {
    transform: translateY(-58%) scale(1.05);
    z-index: 3;
}

.invite-gate-dh-box {
    position: relative;
    width: min(88vw, 340px);
    background: linear-gradient(160deg, #7a1220, #9c1f2e 55%, #7a1220);
    border-radius: 4px;
    box-shadow: 0 20px 60px -20px rgba(0, 0, 0, .5);
    animation: gate-card-in .8s ease both;
    box-sizing: border-box;
    border-style: solid;
    border-width: 32px;
    border-image-source: url('/images/gate/khung-lich.webp');
    border-image-slice: 22% fill;
    border-image-repeat: stretch;
}

.invite-gate-dh-wave {
    display: block;
    width: 96px;
    margin: 0 auto 4px;
    opacity: .9;
}

.invite-gate-dh-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.invite-gate-dh-kicker {
    color: rgba(255, 231, 195, .9);
}

.invite-gate-dh-names {
    color: #fff;
    font-size: 23px;
}

.invite-gate-dh-date {
    color: rgba(255, 231, 195, .85);
    opacity: 1;
    margin-bottom: 4px;
}

.invite-gate-dh-couple {
    width: 76%;
    max-width: 210px;
    height: auto;
    margin: 4px 0 18px;
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, .35));
}

.invite-gate-dh-btn {
    background: linear-gradient(135deg, #f0d199, #c99b4a);
    color: #5c2a12;
    font-weight: 700;
}

.invite-gate-dh-btn:hover {
    filter: brightness(1.05);
}

.invite-gate-slidedoor {
    padding: 0;
    background: transparent;
    overflow: hidden;
}

.invite-gate-slide-panel {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50%;
    background: linear-gradient(160deg, #7a1220, #9c1f2e 55%, #7a1220);
    display: flex;
    align-items: center;
    overflow: hidden;
    transition: transform .85s cubic-bezier(.65, 0, .35, 1);
}

.invite-gate-slide-left {
    left: 0;
    justify-content: flex-end;
}

.invite-gate-slide-right {
    right: 0;
    justify-content: flex-start;
}

.invite-gate-slide-watermark {
    height: 80%;
    max-height: 640px;
    width: auto;
    object-fit: contain;
    opacity: .16;
}

.invite-gate-slide-watermark-left {
    margin-right: -18%;
}

.invite-gate-slide-watermark-right {
    margin-left: -18%;
}

.invite-gate-slide-center {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 4px;
    padding: 0 20px;
    transition: opacity .5s ease;
}

.invite-gate-slide-kicker {
    color: rgba(255, 231, 195, .9);
}

.invite-gate-slide-names {
    color: #fff;
}

.invite-gate-slide-date {
    color: rgba(255, 231, 195, .85);
    opacity: 1;
    margin-bottom: 0;
}

.invite-gate-slide-btn {
    position: relative;
    width: 96px;
    height: 96px;
    margin: 18px 0 10px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0;
    transition: transform .2s ease;
}

.invite-gate-slide-btn:hover {
    transform: scale(1.05);
}

.invite-gate-slide-btn-frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

.invite-gate-slide-btn-chuhy {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44%;
    pointer-events: none;
}

.invite-gate-slidedoor .invite-gate-tap-hint {
    color: rgba(255, 255, 255, .7);
    margin-top: 2px;
}

.invite-gate-slidedoor.invite-gate-opening .invite-gate-slide-left {
    transform: translateX(-100%);
}

.invite-gate-slidedoor.invite-gate-opening .invite-gate-slide-right {
    transform: translateX(100%);
}

.invite-gate-slidedoor.invite-gate-opening .invite-gate-slide-center {
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 480px) {
    .invite-gate-card-box {
        padding: 32px 22px;
    }

    .invite-gate-dh-box {
        width: min(90vw, 320px);
    }
}

/* ===== Nút thao tác nhanh (quick nav) ===== */
.invite-quicknav {
    position: fixed;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 850;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.invite-quicknav-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(8px);
    transition: max-height .35s ease, opacity .3s ease, transform .3s ease;
    pointer-events: none;
}

.invite-quicknav.open .invite-quicknav-list {
    max-height: 70vh;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.invite-quicknav-item {
    display: flex;
    align-items: center;
    width: 44px;
    height: 44px;
    justify-content: center;
    background: var(--invite-accent, #a9746e);
    color: #fff;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 6px 16px rgba(0, 0, 0, .2);
    transition: width .3s ease;
    overflow: hidden;
    white-space: nowrap;
    flex-shrink: 0;
}

.invite-quicknav-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.invite-quicknav-label {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12.5px;
    max-width: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-width .3s ease, opacity .3s ease, margin .3s ease;
}

.invite-quicknav-item:hover {
    width: auto;
    padding-right: 14px;
}

.invite-quicknav-item:hover .invite-quicknav-label {
    max-width: 140px;
    opacity: 1;
    margin-right: 2px;
}

.invite-quicknav-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--invite-accent, #a9746e);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .25);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .3s ease;
}

.invite-quicknav.open .invite-quicknav-toggle {
    transform: rotate(90deg);
}

/* ===== Chuyển đổi ngôn ngữ (language switcher) ===== */
.invite-lang-switcher {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    font-family: 'Montserrat', Arial, sans-serif;
}

.invite-lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, .08);
    background: rgba(255, 255, 255, .92);
    color: #4a3f35;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .15);
    transition: transform .2s ease;
}

.invite-lang-toggle:hover {
    transform: translateY(-1px);
}

.invite-lang-list {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}

.invite-lang-switcher.open .invite-lang-list {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.invite-lang-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: none;
    text-align: left;
    font-size: 13.5px;
    color: #4a3f35;
    cursor: pointer;
    white-space: nowrap;
}

.invite-lang-item:hover {
    background: rgba(169, 116, 110, .1);
}

.invite-lang-item.active {
    background: rgba(169, 116, 110, .16);
    font-weight: 700;
}

@media (max-width: 480px) {
    .invite-lang-switcher {
        top: .6rem;
        right: .6rem;
    }
    .invite-lang-toggle {
        padding: 5px 10px;
        font-size: 12px;
    }
}

/* ===== Thẻ Thời gian & địa điểm (tlc = time-location-card) ===== */
.tlc {
    text-align: center;
}

/* --- Phong cách 1 --- */
.tlc-elegant-gold {
    padding: 30px 20px;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 4px;
    background: var(--tlc-accent-bg, var(--invite-accent, #a9746e));
    color: #fff;
}

.tlc-elegant-gold .tlc-kicker {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fff;
    margin: 0 0 10px;
}

.tlc-elegant-gold .tlc-venue-script {
    font-family: 'Dancing Script', cursive;
    font-size: 40px;
    color: #fff;
    margin: 0 0 8px;
}

.tlc-elegant-gold .tlc-address {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .85);
    margin: 0 0 20px;
}

.tlc-elegant-gold .tlc-label {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .85);
    margin: 0 0 4px;
}

.tlc-elegant-gold .tlc-time-big {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 34px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 16px;
}

.tlc-elegant-gold .tlc-badge-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, .4);
    border-radius: 3px;
    padding: 8px 18px;
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 12px;
}

.tlc-elegant-gold .tlc-badge-sep {
    width: 1px;
    height: 14px;
    background: rgba(255, 255, 255, .4);
}

.tlc-elegant-gold .tlc-lunar {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 11.5px;
    font-style: italic;
    color: rgba(255, 255, 255, .8);
    margin: 0;
}

/* --- Phong cách 2 --- */
.tlc-compact-red {
    padding: 24px 20px;
    background: var(--tlc-accent-bg, var(--invite-accent, #a9746e));
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 4px;
}

.tlc-compact-red .tlc-kicker {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #fff;
    margin: 0 0 12px;
}

.tlc-compact-red .tlc-dow {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 10px;
    color: rgba(255, 255, 255, .85);
}

.tlc-compact-red .tlc-daterow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 0 0 8px;
}

.tlc-compact-red .tlc-time {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 14px;
    letter-spacing: 1px;
    padding-right: 16px;
    border-right: 1px solid rgba(255, 255, 255, .35);
}

.tlc-compact-red .tlc-day-big {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 46px;
    font-weight: 700;
    line-height: 1;
    color: #fff;
}

.tlc-compact-red .tlc-my {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 14px;
    letter-spacing: 1px;
    padding-left: 16px;
    border-left: 1px solid rgba(255, 255, 255, .35);
}

.tlc-compact-red .tlc-lunar {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 11.5px;
    font-style: italic;
    color: rgba(255, 255, 255, .8);
    margin: 0 0 16px;
}

.tlc-compact-red .tlc-venue-label {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
    margin: 0 0 4px;
    color: #fff;
}

.tlc-compact-red .tlc-address {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12.5px;
    color: rgba(255, 255, 255, .85);
    margin: 0;
}

/* --- Phong cách 3 --- */
.tlc-floral-blue {
    padding: 28px 20px;
    background: var(--tlc-accent-bg, var(--invite-accent, #a9746e));
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 4px;
    color: #fff;
}

.tlc-floral-blue .tlc-kicker {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    line-height: 1.8;
    color: rgba(255, 255, 255, .85);
    margin: 0 0 14px;
}

.tlc-floral-blue .tlc-dow {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 8px;
    font-weight: 600;
}

.tlc-floral-blue .tlc-daterow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 0 0 8px;
}

.tlc-floral-blue .tlc-day-big {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.tlc-floral-blue .tlc-my {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.tlc-floral-blue .tlc-lunar {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 11.5px;
    font-style: italic;
    opacity: .75;
    margin: 0 0 14px;
}

.tlc-floral-blue .tlc-divider {
    font-size: 18px;
    color: rgba(255, 255, 255, .85);
    margin: 0 0 14px;
}

.tlc-floral-blue .tlc-venue-label {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
    margin: 0 0 4px;
}

.tlc-floral-blue .tlc-address {
    font-family: 'Montserrat', Arial, sans-serif;
    font-size: 12.5px;
    opacity: .85;
    margin: 0;
}

/* --- Chế độ nền trong suốt (độ đậm < 50%): chữ đổi sang màu điểm nhấn/chữ thường để dễ đọc trên nền nhạt --- */
.tlc-light.tlc-elegant-gold,
.tlc-light.tlc-compact-red,
.tlc-light.tlc-floral-blue {
    border-color: var(--invite-accent, #a9746e);
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-kicker {
    color: var(--invite-accent, #a9746e);
}

.tlc-light .tlc-venue-script {
    color: var(--invite-accent, #a9746e);
}

.tlc-light .tlc-address {
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-label {
    color: var(--invite-accent, #a9746e);
}

.tlc-light .tlc-time-big {
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-badge-row {
    border-color: var(--invite-accent, #a9746e);
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-badge-sep {
    background: var(--invite-accent, #a9746e);
}

.tlc-light .tlc-lunar {
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-dow {
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-time,
.tlc-light .tlc-my {
    border-color: rgba(0, 0, 0, .15);
}

.tlc-light .tlc-day-big {
    color: var(--invite-accent, #a9746e);
}

.tlc-light .tlc-venue-label {
    color: var(--invite-text, #4a3f35);
}

.tlc-light .tlc-divider {
    color: var(--invite-accent, #a9746e);
}

.event-card .tlc {
    padding: 18px 14px;
}

@media (max-width: 480px) {
    .tlc-elegant-gold .tlc-venue-script {
        font-size: 30px;
    }
    .tlc-elegant-gold .tlc-time-big {
        font-size: 28px;
    }
    .tlc-compact-red .tlc-day-big,
    .tlc-floral-blue .tlc-day-big {
        font-size: 36px;
    }
}