/* ============================================
   WeddingSite — Global Styles
   Palette: warm white / muted gold / deep warm brown
   ============================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #F8F6F2;
    --bg-section: #F3EEE8;
    --white: #FFFFFF;
    --text: #2F2A26;
    --text-muted: #7A736D;
    --border: #DDD4CA;
    --gold: #C8A97E;
    --gold-dark: #BFA58A;
    --font-serif: 'Playfair Display', 'Cormorant Garamond', 'Noto Serif TC', Georgia, serif;
    --font-sans: 'Inter', 'Noto Sans TC', sans-serif;
    --max-w: 1140px;
    --transition: 0.35s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ---------- Typography ---------- */
.serif {
    font-family: var(--font-serif);
}

h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: 0.01em;
}

.section-label {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    display: block;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    color: var(--text);
    margin-bottom: 1.25rem;
}

.section-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ---------- Layout ---------- */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 96px 0;
}

.section-alt {
    background: var(--bg-section);
}

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

    .text-center.fade-in {
        position: relative;
    }

        .text-center.fade-in::before,
        .text-center.fade-in::after {
            content: '';
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 250px;
            height: 250px;
            background-size: contain;
            background-repeat: no-repeat;
            /*opacity: 0.9;*/
            pointer-events: none;
        }

        .text-center.fade-in::before {
            left: 0;
            background-image: url('/images/back/LeftTop.PNG');
            background-position: center right;
        }

        .text-center.fade-in::after {
            right: 0;
            background-image: url('/images/back/RightTop.PNG');
            background-position: center left;
        }

@media (max-width: 768px) {
    .text-center.fade-in::before,
    .text-center.fade-in::after {
        width: 75px;
        width: 75px;
        height: 100px;
        opacity: 0.9;
    }
}

/* ---------- Divider ---------- */
.divider {
    width: 48px;
    height: 1px;
    background: var(--gold);
    margin: 1.5rem auto;
}

/* ---------- Navigation ---------- */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 2rem;
    transition: background var(--transition), box-shadow var(--transition);
}

    .site-nav.scrolled {
        background: rgba(248, 246, 242, 0.96);
        backdrop-filter: blur(8px);
        box-shadow: 0 1px 0 var(--border);
    }

.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--white);
    transition: color var(--transition);
}

.site-nav.scrolled .nav-brand {
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.25rem;
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.85);
    transition: color var(--transition);
    position: relative;
}

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -3px;
        left: 0;
        width: 0;
        height: 1px;
        background: var(--gold);
        transition: width var(--transition);
    }

    .nav-link:hover::after {
        width: 100%;
    }

    .nav-link:hover {
        color: var(--white);
    }

.site-nav.scrolled .nav-link {
    color: var(--text-muted);
}

    .site-nav.scrolled .nav-link:hover {
        color: var(--text);
    }

/* Language switcher */
.nav-lang {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 1rem;
    padding-left: 1.5rem;
    border-left: 1px solid rgba(255,255,255,0.25);
}

.site-nav.scrolled .nav-lang {
    border-left-color: var(--border);
}

.lang-btn {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
    padding: 2px 0;
}

    .lang-btn:hover,
    .lang-btn.active {
        color: var(--white);
    }

.site-nav.scrolled .lang-btn {
    color: var(--text-muted);
}

    .site-nav.scrolled .lang-btn:hover,
    .site-nav.scrolled .lang-btn.active {
        color: var(--text);
    }

.lang-sep {
    color: rgba(255,255,255,0.3);
    font-size: 0.65rem;
}

.site-nav.scrolled .lang-sep {
    color: var(--border);
}

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

    .nav-hamburger span {
        display: block;
        width: 22px;
        height: 1px;
        background: var(--white);
        transition: var(--transition);
    }

.site-nav.scrolled .nav-hamburger span {
    background: var(--text);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-slides {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s ease;
}

    .hero-slide.active {
        opacity: 1;
    }

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(30,25,20,0.35) 0%, rgba(30,25,20,0.25) 50%, rgba(30,25,20,0.5) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 0 1.5rem;
}

.hero-label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    margin-bottom: 1.5rem;
}

.hero-names {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
}

    .hero-names .ampersand {
        font-style: italic;
        color: rgba(255,255,255,0.7);
        font-size: 0.75em;
        display: block;
        margin: 0.25rem 0;
    }

.hero-date {
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    /*text-transform: uppercase;*/
    color: rgba(255,255,255,0.8);
    margin-bottom: 2.5rem;
}

/* Countdown */
.hero-countdown {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.countdown-item {
    text-align: center;
}

.countdown-num {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 400;
    line-height: 1;
    display: block;
}

.countdown-label {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.65);
    margin-top: 0.4rem;
    display: block;
}

.countdown-sep {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: rgba(255,255,255,0.4);
    align-self: flex-start;
    padding-top: 0.1rem;
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.6);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
    animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        opacity: 0.6;
        transform: scaleY(1);
    }

    50% {
        opacity: 1;
        transform: scaleY(0.6);
    }
}

/* ---------- Story Section ---------- */
.story-layout {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.story-prose p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.story-center-block {
    text-align: center;
}

.story-center-group {
    margin-bottom: 2.5rem;
}

.story-center-group p {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--text);
}

.story-photos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    /*grid-template-columns: 1fr;*/ /* 一排一張 */
    gap: 0.75rem;
    margin-top: 1rem;
}

.story-photos img {
    width: 100%;
    /*aspect-ratio: 3/4;*/
    object-fit: cover;
}

/* ---------- Details Section ---------- */
.details-grid {
    /*display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;*/
    width: 60%;
    margin: 0 auto;
}

.detail-card {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 2.5rem;
    text-align: center;
}

.detail-event-tag {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1.25rem;
    display: block;
}

.detail-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-info-row {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
}

.detail-info-item {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

    .detail-info-item strong {
        display: block;
        font-size: 0.7rem;
        font-weight: 500;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: var(--text);
        margin-bottom: 0.2rem;
    }

.btn-map {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold-dark);
    border-bottom: 1px solid var(--gold);
    padding-bottom: 2px;
    transition: color var(--transition), border-color var(--transition);
}

    .btn-map:hover {
        color: var(--text);
        border-color: var(--text);
    }

/* ---------- Schedule Section ---------- */
.schedule-list {
    max-width: 640px;
    margin: 0 auto;
}

.schedule-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
    align-items: start;
}

    .schedule-item:first-child {
        border-top: 1px solid var(--border);
    }

.schedule-time {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--gold);
    padding-top: 0.15rem;
}

.schedule-event {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.schedule-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ---------- Wedding Party ---------- */
.party-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 4rem;
    align-items: start;
}

.party-col-label {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    text-align: center;
    margin-bottom: 2rem;
    display: block;
}

.party-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.party-member {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.party-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: top;
    border: 2px solid var(--border);
    margin-bottom: 0.85rem;
    transition: border-color var(--transition);
}

.party-member:hover .party-avatar {
    border-color: var(--gold);
}

.party-name {
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 0.2rem;
}

.party-title {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
}

.party-dogs-row {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 1rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
    .party-layout {
        grid-template-columns: 1fr 1fr;
        gap: 0 1.5rem;
    }

    .party-avatar {
        width: 80px;
        height: 80px;
    }

    .party-dogs-row {
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .party-layout {
        grid-template-columns: 1fr 1fr;
        gap: 0 1rem;
    }

    .party-list {
        gap: 1.75rem;
    }

    .party-avatar {
        width: 150px;
        height: 150px;
    }

    .party-name {
        font-size: 0.85rem;
    }

    .party-title {
        font-size: 0.6rem;
    }

    .party-dogs-row {
        gap: 1.5rem;
    }
}

/* ---------- Gallery Preview ---------- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
    gap: 0.75rem;
}

.gallery-item {
    overflow: hidden;
    cursor: pointer;
}

    .gallery-item:first-child {
        grid-column: span 2;
        grid-row: span 2;
    }

    .gallery-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.7s ease;
        aspect-ratio: 1;
    }

    .gallery-item:first-child img {
        aspect-ratio: auto;
        height: 100%;
    }

    .gallery-item:hover img {
        transform: scale(1.04);
    }

.gallery-more {
    text-align: center;
    margin-top: 2.5rem;
}

/* ---------- RSVP CTA ---------- */
.rsvp-cta {
    background: var(--text);
    color: var(--white);
    text-align: center;
    padding: 96px 2rem;
}

    .rsvp-cta .section-label {
        color: var(--gold);
    }

    .rsvp-cta .section-title {
        color: var(--white);
    }

    .rsvp-cta .section-subtitle {
        color: rgba(255,255,255,0.65);
    }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 0.9rem 2.5rem;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gold);
    color: var(--white);
}

    .btn-primary:hover {
        background: var(--gold-dark);
    }

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.5);
}

    .btn-outline:hover {
        background: rgba(255,255,255,0.1);
        border-color: var(--white);
    }

.btn-outline-dark {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

    .btn-outline-dark:hover {
        border-color: var(--text);
    }

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 200;
    width: 200px;
    height: 200px;
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity var(--transition), transform var(--transition);
    pointer-events: none;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.back-to-top img {
   width: 100%;
   height: 100%;
   object-fit: contain;
   border-radius: 50%;
   transition: transform var(--transition);
}
.back-to-top:hover img {
   transform: scale(1.1);
}

@media (max-width: 768px) {
    .back-to-top {
        width: 90px;
        height: 90px;
    }
    .back-to-top.visible {
        opacity: 0.9;
    }
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--bg);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 3rem 2rem;
}

.footer-names {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 0.4rem;
}

.footer-date {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.footer-thanks {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ---------- Fade-in Animation ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .story-photos {
        grid-template-columns: repeat(2, 1fr);
    }

    .details-grid {
        grid-template-columns: 1fr;
        width: 100%
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-item:first-child {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: rgba(248, 246, 242, 0.98);
        backdrop-filter: blur(8px);
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 1.5rem 0 2rem;
        border-bottom: 1px solid var(--border);
    }

        .nav-links.open {
            display: flex;
        }

        .nav-links li {
            width: 100%;
            text-align: center;
        }

    .nav-link {
        display: block;
        padding: 0.85rem 2rem;
        color: var(--text-muted);
        font-size: 0.8rem;
    }

    .nav-lang {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding-top: 1rem;
        border-top: 1px solid var(--border);
        width: 100%;
        justify-content: center;
    }

    .lang-btn {
        color: var(--text-muted);
    }

        .lang-btn.active {
            color: var(--text);
        }

    .lang-sep {
        color: var(--border);
    }

    .nav-hamburger {
        display: flex;
    }

    .hero-countdown {
        gap: 1.25rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .gallery-item:first-child {
        grid-column: span 2;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .hero-names {
        font-size: 2.8rem;
    }

    .hero-countdown {
        gap: 1rem;
    }

    .countdown-sep {
        display: none;
    }
}