:root {
    /* White & Green Palette */
    --color-bg:       #FAF7F2;          /* Warm ivory cream */
    --color-bg2:      #F4EFE6;          /* Soft linen */
    --color-bg3:      #EDE6DA;          /* Warm parchment */
    --color-surface:  rgba(255,255,255,0.8);
    --color-text:     #2C2318;          /* Deep espresso */
    --color-text-mid: #6B5B4E;          /* Warm taupe */
    --color-text-dim: #A8957F;          /* Muted sand */
    --color-gold:     #688f43;          /* Botanical green */
    --color-gold2:    #506e33;          /* Deep green */
    --color-gold-lt:  #a7c787;          /* Pale green */
    --color-accent:   #688f43;
    --color-border:   rgba(104, 143, 67, 0.25);
    --color-dark:     #2C2318;
    --color-silver:   #A8957F;
    --color-paper:    #FAF7F2;

    --font-heading: 'Playfair Display', serif;
    --font-body:    'Lato', sans-serif;
    --font-script:  'Birthstone', cursive;
    --font-story:   'Cookie', cursive;

    --gold-line:    linear-gradient(90deg, transparent, #688f43 35%, #688f43 65%, transparent);
    --shadow-deep:  0 12px 40px rgba(44,35,24,0.12);
    --shadow-soft:  0 4px 20px rgba(44,35,24,0.06);
    --shadow-gold:  0 4px 30px rgba(104, 143, 67, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-tap-highlight-color: transparent;
    margin: 0;
}

/* Subtle linen noise texture */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('data:image/svg+xml;charset=utf-8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="n"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23n)" opacity="0.025"/%3E%3C/svg%3E');
    pointer-events: none;
    z-index: 9998;
}

/* ── SECTION BASES ─────────────────────────────────────────────────────── */
#hero-section,
#interactive-cards-section,
#wishes-section { background: var(--color-bg); position: relative; }

#gallery-section,
#rsvp-section,
#guestbook-section { background: var(--color-bg2); position: relative; }

#location-section { background: var(--color-bg3); position: relative; }

/* Reusable gold ornament divider line */
.gold-divider {
    width: 100%; max-width: 400px; height: 1px;
    background: var(--gold-line); margin: 0 auto;
}

/* Luxury section title */
.luxury-section-title {
    font-family: var(--font-heading);
    color: var(--color-gold);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 400; font-style: italic; letter-spacing: 2px;
    text-align: center; margin-bottom: 10px;
}
.luxury-section-ornament {
    color: var(--color-gold); font-size: 0.85rem;
    letter-spacing: 12px; text-align: center;
    margin-bottom: 40px; display: block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

.hidden {
    display: none !important;
}

/* Helper Classes */
.mt-20 { margin-top: 20px; }
.w-100 { width: 100%; }
.flex-center { display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }

/* UI Controls (Audio & Lang) */
.lang-controls {
    position: fixed; top: 20px; left: 20px; z-index: 1000;
    display: flex; gap: 5px; align-items: center;
    background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(4px);
    padding: 5px 12px; border-radius: 20px; border: 1px solid rgba(255,255,255,0.2);
}
.lang-btn {
    background: transparent; border: none; color: var(--color-silver);
    font-family: var(--font-body); font-weight: bold; font-size: 0.9rem;
    cursor: pointer; transition: color 0.3s;
}
.lang-btn:hover, .lang-btn.active { color: #fff; }
.lang-divider { color: var(--color-silver); font-size: 0.9rem; opacity: 0.5; }

.ui-controls { position: fixed; top: 20px; right: 20px; z-index: 1000; }
.control-btn {
    background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%; width: 44px; height: 44px; display: flex; justify-content: center;
    align-items: center; cursor: pointer; color: #fff; backdrop-filter: blur(4px); transition: all 0.3s ease;
}
.control-btn:hover { background: rgba(255, 255, 255, 0.2); transform: scale(1.05); }
.control-btn .icon { width: 20px; height: 20px; }


/* Toast */
.toast {
    position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-20px);
    background: rgba(8,11,18,0.9); color: #fff; padding: 14px 32px;
    border-radius: 30px; font-family: var(--font-body); font-size: 0.9rem; letter-spacing: 1px;
    z-index: 9999; opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    border: 1px solid var(--color-gold);
    box-shadow: 0 4px 30px rgba(167, 199, 135,0.2);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* --- PHASE 1: Album Container --- */
.album-container {
    width: 100vw; height: 100vh; display: flex; flex-direction: column;
    justify-content: center; align-items: center; z-index: 10;
}
.album-instruction {
    font-family: var(--font-heading); color: var(--color-silver); font-style: italic;
    margin-bottom: 20px; letter-spacing: 2px; animation: pulse 2s infinite;
}
.skip-btn {
    position: absolute; top: 30px; right: 30px; width: auto; padding: 10px 20px;
    font-size: 0.85rem; border-color: rgba(255,255,255,0.3); color: var(--color-silver);
    z-index: 100; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
}
.skip-btn:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: #fff; }
.book { box-shadow: var(--shadow-deep); }
.page { background-color: var(--color-paper); overflow: hidden; box-shadow: inset 0 0 20px rgba(0,0,0,0.05); }
.page:nth-child(even) { box-shadow: inset -20px 0 30px -10px rgba(0,0,0,0.1); }
.page:nth-child(odd) { box-shadow: inset 20px 0 30px -10px rgba(0,0,0,0.1); }
.page-cover { 
    background-color: #FAFAFA; 
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.05) 4%, rgba(0,0,0,0) 10%, rgba(0,0,0,0) 96%, rgba(0,0,0,0.05) 100%);
    box-shadow: inset 4px 0 10px rgba(0,0,0,0.2), inset -1px 0 3px rgba(255,255,255,1);
}
.page-content { width: 100%; height: 100%; position: relative; }

.album-cover-new {
    display: flex; flex-direction: column; height: 100%; width: 100%; padding: 25px 25px 0 25px; box-sizing: border-box;
}
.cover-photo-container {
    width: 100%; height: 72%; overflow: hidden;
    box-shadow: 0px 4px 15px rgba(0,0,0,0.1);
}
.cover-photo-img {
    width: 100%; height: 100%; object-fit: cover; object-position: center 20%;
}
.cover-text-banner {
    width: 100%; height: 28%; display: flex; flex-direction: column; justify-content: center; align-items: center;
}
.photo-page { background-size: cover; background-position: center; filter: grayscale(100%) contrast(1.1); }

/* Album Collage Layout */
.album-collage-page {
    width: 100%; height: 100%; padding: 45px; display: grid;
    grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); gap: 25px;
    background-color: #f9f7f1; /* Warm paper tone */
    box-shadow: inset 0 0 40px rgba(0,0,0,0.05);
}
.album-collage-page.items-3 .collage-img-wrap:nth-child(1) { grid-column: span 2; }
.album-collage-page.items-1 .collage-img-wrap:nth-child(1) { grid-column: span 2; grid-row: span 2; }

.collage-img-wrap {
    position: relative; background: #fff; padding: 8px; padding-bottom: 28px;
    box-shadow: 2px 6px 15px rgba(0,0,0,0.15); cursor: zoom-in;
    transition: transform 0.3s ease, z-index 0s;
}
.collage-img-wrap:nth-child(odd) { transform: rotate(-3deg); }
.collage-img-wrap:nth-child(even) { transform: rotate(4deg); }
.collage-img-wrap:hover { transform: scale(1.08) rotate(0deg); z-index: 10; box-shadow: 4px 12px 25px rgba(0,0,0,0.3); }

.collage-img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; }

/* Lightbox */
.lightbox {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.9); backdrop-filter: blur(10px);
    z-index: 9999; display: flex; justify-content: center; align-items: center;
    opacity: 0; transition: opacity 0.4s ease; pointer-events: none;
}
.lightbox:not(.hidden) { opacity: 1; pointer-events: all; }
.lightbox-img {
    max-width: 90%; max-height: 90%; object-fit: contain;
    box-shadow: 0 0 30px rgba(0,0,0,0.8); border: 2px solid #fff;
    transform: scale(0.8); transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.lightbox:not(.hidden) .lightbox-img { transform: scale(1); }
.lightbox-close {
    position: absolute; top: 20px; right: 30px; color: #fff; font-size: 2rem;
    cursor: pointer; font-family: sans-serif; transition: color 0.3s;
}
.lightbox-close:hover { color: var(--color-silver); }

/* --- PHASE 2: Envelope Container --- */
.envelope-container {
    perspective: 1500px; cursor: pointer; display: flex; flex-direction: column;
    align-items: center; gap: 30px; z-index: 10;
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    pointer-events: auto;
    animation: floatEnvelope 5s ease-in-out infinite;
}
@keyframes floatEnvelope {
    0%, 100% { transform: translate(-50%, -50%) translateY(0px) rotate(-0.5deg); }
    50% { transform: translate(-50%, -50%) translateY(-18px) rotate(0.5deg); }
}

.click-instruction {
    font-family: var(--font-heading); font-style: italic; color: rgba(167, 199, 135,0.85);
    letter-spacing: 4px; font-size: 1rem; animation: pulse 2.5s infinite;
    text-shadow: 0 0 20px rgba(167, 199, 135,0.5); text-transform: uppercase;
}
@keyframes pulse { 0% { opacity: 0.3; transform: scale(0.97) translateY(0); } 50% { opacity: 1; transform: scale(1.03) translateY(-3px); } 100% { opacity: 0.3; transform: scale(0.97) translateY(0); } }

@keyframes introCtaPulse {
    0%, 100% { opacity: 0.3; letter-spacing: 5px; }
    50%       { opacity: 0.8; letter-spacing: 6px; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(8px); }
}

.envelope {
    position: relative; width: 600px; height: 390px;
    background: linear-gradient(135deg, #FDFBF7 0%, #F0EBE0 100%);
    box-shadow:
        0 40px 80px rgba(0,0,0,0.5),
        0 0 0 1px rgba(167, 199, 135,0.3),
        0 0 80px rgba(167, 199, 135,0.08),
        inset 0 1px 0 rgba(255,255,255,0.9);
    transform-style: preserve-3d; transition: transform 0.5s ease, box-shadow 0.5s ease;
    border-radius: 4px;
    overflow: hidden;
}

/* Shimmer sweep across envelope */
.envelope::after {
    content: '';
    position: absolute; top: 0; left: -100%; width: 60%; height: 100%;
    background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
    animation: shimmerSweep 4s ease-in-out infinite 1s;
    z-index: 10; pointer-events: none;
}
@keyframes shimmerSweep {
    0% { left: -100%; }
    40%, 100% { left: 160%; }
}

.envelope:hover {
    box-shadow: 0 50px 100px rgba(0,0,0,0.6), 0 0 0 1px rgba(167, 199, 135,0.5), 0 0 120px rgba(167, 199, 135,0.15);
}
.envelope-body { position: absolute; width: 100%; height: 100%; background: linear-gradient(to bottom, #EBE7DD, #F4F1EA); clip-path: polygon(0 0, 50% 50%, 100% 0, 100% 100%, 0 100%); z-index: 1; display: flex; justify-content: center; align-items: center; transform: translateZ(0px); box-shadow: inset 0 0 30px rgba(0,0,0,0.05); }
.envelope-front { position: absolute; width: 100%; height: 100%; background: linear-gradient(to top, #FDFBF7, #F4F1EA); clip-path: polygon(0 100%, 50% 50%, 100% 100%); z-index: 3; transform: translateZ(2px); border-top: 2px solid rgba(255,255,255,0.8); display: flex; flex-direction: column; justify-content: flex-end; align-items: center; padding-bottom: 25px; filter: drop-shadow(0 -5px 15px rgba(0,0,0,0.1)); }
.envelope-flap { position: absolute; width: 100%; height: 100%; background: linear-gradient(to bottom, #FFFFFF, #FDFBF7); clip-path: polygon(0 0, 100% 0, 50% 50%); transform-origin: top; z-index: 4; transform: translateZ(3px); filter: drop-shadow(0px 8px 15px rgba(0,0,0,0.15)); border-bottom: 1px solid rgba(167, 199, 135,0.3); transition: transform 1.2s cubic-bezier(0.25, 1, 0.5, 1); }

.flap-crest { position: absolute; top: 15px; left: 50%; transform: translateX(-50%); width: 60px; height: 60px; color: #1E3F5A; display: flex; flex-direction: column; align-items: center; opacity: 0.8; }
.crest-svg { width: 40px; height: 40px; }
.crest-initials { font-family: var(--font-heading); font-size: 0.8rem; margin-top: -5px; letter-spacing: 2px; }

.envelope-seal {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) translateZ(6px);
    width: 90px; height: 90px; border-radius: 50%; z-index: 5;
    display: flex; justify-content: center; align-items: center;
    background: radial-gradient(circle at 35% 25%, #c5e1a5 0%, #a7c787 30%, #506e33 80%, #3a5124 100%);
    box-shadow: inset 0 0 15px rgba(80, 110, 51,0.5), inset 3px 3px 8px rgba(255,255,255,0.7), 4px 8px 15px rgba(0,0,0,0.5);
    transition: opacity 0.3s;
    animation: sealPulse 3s ease-in-out infinite;
}
@keyframes sealPulse {
    0%, 100% { box-shadow: inset 0 0 15px rgba(80, 110, 51,0.5), inset 3px 3px 8px rgba(255,255,255,0.7), 4px 8px 15px rgba(0,0,0,0.5), 0 0 0 rgba(167, 199, 135,0); }
    50% { box-shadow: inset 0 0 15px rgba(80, 110, 51,0.5), inset 3px 3px 8px rgba(255,255,255,0.7), 4px 8px 15px rgba(0,0,0,0.5), 0 0 25px rgba(167, 199, 135,0.6); }
}
.envelope-seal::before {
    content: ''; position: absolute; width: 74px; height: 74px; border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.4);
    box-shadow: inset 2px 2px 5px rgba(80, 110, 51,0.6), 2px 2px 4px rgba(255,255,255,0.5);
}
.seal-text {
    font-family: var(--font-heading); font-size: 1.4rem; color: #3a5124; line-height: 1.1;
    text-shadow: -1px -1px 1px rgba(255,255,255,0.8), 1px 1px 2px rgba(0,0,0,0.5);
    position: relative; z-index: 2; text-align: center; letter-spacing: 3px; font-weight: 700;
}

.envelope-print {
    text-align: center;
    color: #444;
    margin-bottom: 20px;
    font-size: 1.1rem;
    letter-spacing: 2px;
}
.print-guest {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #8B7D6B;
    letter-spacing: 3px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}
.dotted-line {
    display: inline-block;
    min-width: 150px;
    border-bottom: 1px solid rgba(139, 125, 107, 0.4);
    text-align: center;
    position: relative;
    padding: 0 10px;
}
#guest-name {
    font-family: var(--font-heading);
    font-size: 1.85rem;
    letter-spacing: 3px;
    color: var(--color-text);
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-weight: 500;
}

.envelope-contents {
    position: absolute; width: 90%; height: 90%; top: 5%; left: 5%; z-index: 2; transform: translateZ(1px);
    display: flex; justify-content: center; align-items: center;
}
.mini-card {
    width: 60%; height: 90%; background: #fff;
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px rgba(0,0,0,0.05); border: 1px solid #eee;
}

/* --- Paper Airplane morph overlay --- */
#paper-plane-overlay {
    position: fixed;
    z-index: 99998;
    pointer-events: none;
    top: 50%; left: 50%;
    width: 0; height: 0;
    transform: translate(-50%, -50%);
    opacity: 0;
}
.paper-plane-svg {
    width: 200px;
    height: 200px;
    filter: drop-shadow(0 0 30px rgba(167, 199, 135,0.8)) drop-shadow(0 0 60px rgba(255,255,255,0.4));
}

/* Shake animation for envelope click */
@keyframes envelopeShake {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); }
    10% { transform: translate(-50%, -50%) rotate(-3deg) translateX(-5px); }
    20% { transform: translate(-50%, -50%) rotate(3deg) translateX(5px); }
    30% { transform: translate(-50%, -50%) rotate(-3deg) translateX(-4px); }
    40% { transform: translate(-50%, -50%) rotate(3deg) translateX(4px); }
    50% { transform: translate(-50%, -50%) rotate(-2deg) translateX(-3px); }
    60% { transform: translate(-50%, -50%) rotate(2deg) translateX(3px); }
    70% { transform: translate(-50%, -50%) rotate(-1deg) translateX(-2px); }
    80% { transform: translate(-50%, -50%) rotate(1deg) translateX(2px); }
}
.envelope-container.shaking {
    animation: envelopeShake 0.6s ease-in-out forwards !important;
}

/* Sparkle stars around envelope */
.sparkle-star {
    position: absolute;
    pointer-events: none;
    animation: sparkleTwinkle var(--dur, 2s) ease-in-out infinite var(--delay, 0s);
    z-index: 9;
}
.sparkle-star svg { fill: #a7c787; }
@keyframes sparkleTwinkle {
    0%, 100% { opacity: 0; transform: scale(0.3) rotate(0deg); }
    50% { opacity: 1; transform: scale(1) rotate(180deg); }
}

/* Responsive Scaling for Envelope */
@media (max-width: 650px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.85);
    }
}
@media (max-width: 500px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.65);
    }
}
@media (max-width: 400px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.55);
    }
}

/* --- PHASE 3: Cards Container --- */
.cards-container {
    width: 100vw; height: 100vh; display: flex; justify-content: center; align-items: center; gap: 40px; z-index: 20; padding: 20px;
    position: absolute; top: 0; left: 0;
}

/* 3D Scene setup */
.card-scene {
    width: 380px; height: 600px; perspective: 1500px;
}
.card-object {
    width: 100%; height: 100%; position: relative; transition: transform 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d; box-shadow: var(--shadow-deep);
}
.card-object.is-flipped { transform: rotateY(180deg); }

.card-face {
    position: absolute; width: 100%; height: 100%; backface-visibility: hidden; background-color: var(--color-paper); padding: 15px;
    background-image: url('https://www.transparenttextures.com/patterns/cream-paper.png'); /* Subtle paper texture */
}
.card-front { transform: rotateY(0deg); }
.card-back { transform: rotateY(180deg); }

.card-border {
    width: 100%; height: 100%; border: 2px solid var(--color-accent); padding: 25px;
    outline: 1px solid var(--color-accent); outline-offset: -6px; /* Double vintage border */
    display: flex; flex-direction: column; justify-content: space-between; align-items: center;
}
.card-border.minimalist { padding: 15px; outline-offset: -4px; }

/* --- PHASE 4: Mailbox Animation Container --- */
.mailbox-container {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 200px; height: 200px; z-index: 30;
}
.mailbox-svg { width: 100%; height: 100%; }

/* --- Typographies & Elements Inside Cards --- */
.foil-effect {
    background: linear-gradient(135deg, #a7c787 0%, #F5F1E6 50%, #B08B4B 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    text-shadow: 0px 2px 10px rgba(0,0,0,0.6); /* Good for dark background album cover */
}
.card-face .foil-effect, .card-face .title {
    /* Sophisticated letterpress for light paper cards */
    background: none; -webkit-text-fill-color: var(--color-text); color: var(--color-text);
    text-shadow: 1px 1px 0px rgba(255,255,255,0.9), -1px -1px 0px rgba(0,0,0,0.05);
}
.title { font-size: 2.2rem; margin-bottom: 5px; letter-spacing: 3px; text-transform: uppercase; text-align: center; font-weight: 600;}
.names { font-size: 3.5rem; margin-bottom: 10px; font-weight: 400; text-align: center; font-family: var(--font-script); color: var(--color-text);}
.album-cover-new .cover-title { font-family: var(--font-story); font-size: 2.2rem; text-transform: none; letter-spacing: 1px; font-weight: 400; color: #555; background: none; -webkit-text-fill-color: #555; text-shadow: none; margin-bottom: 0px;}
.album-cover-new .cover-names { color: #222; background: none; -webkit-text-fill-color: #222; font-size: 4.8rem; font-weight: 400; text-shadow: none; margin-bottom: -5px; line-height: 1;}
/* --- NEW TEMPLATE DESIGN --- */
.new-template { padding: 30px 20px; display: flex; flex-direction: column; justify-content: flex-start; color: #1E3F5A; background-color: #FAFAFA; border: none; outline: none; }
.card-header-new { display: flex; justify-content: space-between; align-items: flex-start; width: 100%; margin-bottom: 15px; }
.card-names { font-family: var(--font-script); font-size: 3rem; line-height: 0.9; text-align: left; margin-top: 10px; }
.card-floral { width: 80px; height: 100px; color: #1E3F5A; }
.card-body-new { text-align: center; width: 100%; display: flex; flex-direction: column; align-items: center; }
.greeting-new { font-family: var(--font-body); font-size: 0.75rem; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 5px; font-weight: 600;}
.invite-text-new { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 1px; margin: 10px 0; }
.date-layout-new { margin: 15px 0; display: flex; flex-direction: column; align-items: center; gap: 5px; }
.time-box-new { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 2px; }
.time-box-new strong { font-size: 0.8rem; font-weight: 700; color: #1E3F5A; }
.date-main { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; letter-spacing: 4px; margin: 5px 0; color: #1E3F5A;}
.lunar-date { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 1px; font-style: italic; }
.location-details-new { font-size: 0.65rem; line-height: 1.6; margin: 10px 0; }
.location-details-new strong { font-size: 0.8rem; letter-spacing: 1px; }
.parents-layout { display: flex; justify-content: space-between; width: 90%; margin-top: 20px; font-size: 0.65rem; text-transform: uppercase; line-height: 1.5; }
.parent-side { text-align: center; }
.parent-side strong { font-size: 0.75rem; letter-spacing: 1px; display: block; margin-bottom: 5px; }
.album-back-cover { width: 100%; height: 100%; }
.floral-corner { position: absolute; width: 60px; height: 60px; color: #D4AF37; pointer-events: none; opacity: 0.9; }
.floral-corner.top-left { top: 25px; left: 25px; }
.floral-corner.bottom-right { bottom: 25px; right: 25px; }
.album-back-cover .thank-you { 
    font-family: var(--font-script); font-size: 4.5rem; color: #222; 
    background: none; -webkit-text-fill-color: #222; font-weight: 400; text-shadow: none; text-align: center; margin: 0;
}
.back-cover-line { width: 50px; height: 1px; background: #D4AF37; margin-top: 15px; }

.invite-header { text-align: center; margin-bottom: 20px; }
.invite-script { font-family: var(--font-script); font-size: 4.5rem; color: #222; margin: 0; line-height: 1; font-weight: 400; }
.branch-divider { width: 120px; height: 20px; color: #999; margin: 0 auto; display: block; }

.greeting { font-size: 2rem; margin-bottom: 5px; font-weight: 400; color: var(--color-text-light); text-align: center; font-family: var(--font-script); }
.guest-name-box { width: 80%; margin: 5px auto; padding: 8px 10px; border-top: 1px solid var(--color-accent); border-bottom: 1px solid var(--color-accent); font-family: var(--font-heading); font-size: 1.4rem; color: var(--color-text); font-style: italic; text-align: center; }
.location-details { font-size: 0.9rem; line-height: 1.5; margin: 5px 0; color: var(--color-text); text-align: center; }
.map-container { width: 100%; flex: 1; min-height: 120px; border: 1px solid var(--color-accent); filter: grayscale(80%) sepia(20%) contrast(1.1); margin-top: 5px; margin-bottom: 10px;}
.section-title { font-size: 1.4rem; color: var(--color-text); margin-bottom: 10px; letter-spacing: 2px; text-transform: uppercase; text-align: center; font-weight: 600;}
.invite-text { font-size: 0.95rem; line-height: 1.6; margin: 10px 0; color: var(--color-text-light); }

/* Forms */
.elegant-form { text-align: left; }
.form-group { margin-bottom: 22px; }
.form-group label { display: block; margin-bottom: 8px; font-family: var(--font-body); font-weight: 600; color: var(--color-text-mid); letter-spacing: 2px; font-size: 0.68rem; text-transform: uppercase; }
.elegant-input { width: 100%; padding: 12px 0; border: none; border-bottom: 1px solid var(--color-border); background-color: transparent; font-family: var(--font-body); font-size: 0.95rem; color: var(--color-text); outline: none; transition: border-color 0.3s; }
.elegant-input::placeholder { color: var(--color-text-dim); }
.elegant-input:focus { border-bottom-color: var(--color-gold); }
textarea.elegant-input { resize: vertical; padding-top: 8px; }

/* Radio Buttons */
.radio-group { display: flex; flex-direction: column; gap: 14px; }
.radio-label { display: flex; align-items: center; cursor: pointer; font-size: 0.9rem; color: var(--color-text-mid); transition: color 0.3s; }
.radio-label:hover { color: var(--color-text); }
.radio-label input { position: absolute; opacity: 0; cursor: pointer; }
.radio-custom { height: 16px; width: 16px; background-color: transparent; border: 1px solid var(--color-gold-lt); border-radius: 50%; margin-right: 12px; position: relative; display: inline-block; transition: all 0.3s; flex-shrink: 0; }
.radio-label input:checked ~ .radio-custom { border-color: var(--color-gold); }
.radio-label input:checked ~ .radio-custom::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 7px; height: 7px; border-radius: 50%; background-color: var(--color-gold); }
.radio-label input:checked ~ span:last-child { color: var(--color-text); font-weight: 600; }

/* Buttons */
.elegant-btn { width: 100%; padding: 15px; background-color: transparent; color: var(--color-text); border: 1px solid var(--color-gold); font-family: var(--font-body); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 4px; cursor: pointer; transition: all 0.4s ease; display: flex; justify-content: center; align-items: center; gap: 10px; }
.elegant-btn:hover { background-color: var(--color-gold); color: #fff; }
.elegant-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.back-btn { margin-top: 15px; border-color: var(--color-gold-lt); color: var(--color-text-dim); font-size: 0.72rem; padding: 10px; }
.back-btn:hover { border-color: var(--color-gold); color: var(--color-text); background: transparent; }

.overlay-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 30px; /* Pill shape */
    color: #1E3F5A;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    white-space: nowrap;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}
.overlay-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

/* Loader */
.loader { width: 16px; height: 16px; border: 2px solid rgba(0,0,0,0.2); border-radius: 50%; border-top-color: var(--color-text); animation: spin 1s ease-in-out infinite; }
.elegant-btn:hover .loader { border: 2px solid rgba(255,255,255,0.3); border-top-color: var(--color-paper); }
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive adjustments */
@media (max-width: 900px) {
    .cards-container { flex-direction: column; overflow-y: auto; padding: 40px 20px; align-items: center; gap: 60px; justify-content: flex-start;}
    .card-scene { width: 100%; max-width: 400px; height: 600px; flex-shrink: 0; }
}

/* Responsive Scaling for Envelope */
@media (max-width: 650px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.85);
    }
}
@media (max-width: 500px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.65);
    }
}
@media (max-width: 400px) {
    .envelope-container {
        transform: translate(-50%, -50%) scale(0.55);
    }
}

/* --- NEW: Cinematic Particles Background --- */
#particles-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
}

/* --- Language Controls --- */
.lang-controls {
    position: fixed;
    top: 25px;
    left: 25px;
    z-index: 2000; /* Above splash screen */
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.6);
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid rgba(104, 143, 67, 0.4);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}
.lang-btn {
    background: none;
    border: none;
    color: rgba(61, 51, 41, 0.5);
    font-family: 'Lato', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: color 0.3s ease;
    padding: 0;
}
.lang-btn:hover {
    color: rgba(61, 51, 41, 0.9);
}
.lang-btn.active {
    color: var(--color-gold);
    font-weight: bold;
}
.lang-divider {
    color: rgba(61, 51, 41, 0.2);
    font-size: 0.8rem;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0) 70%);
    box-shadow: 0 0 15px rgba(255,255,255,0.3);
    animation: floatParticle linear infinite;
    bottom: -10px;
    filter: blur(1px);
}
@keyframes floatParticle {
    0% { transform: translateY(0) scale(0.5); opacity: 0; }
    20% { opacity: 0.6; }
    80% { opacity: 0.6; }
    100% { transform: translateY(-120vh) scale(1.2); opacity: 0; }
}

/* Portfolio Keyframes */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes scrollMarquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Masonry Item */
.masonry-item {
    break-inside: avoid;
    margin-bottom: 16px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(44,35,24,0.1);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    cursor: pointer;
}
.masonry-item:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: 0 12px 40px rgba(44,35,24,0.16), 0 0 0 1px rgba(104, 143, 67,0.3);
}
.masonry-item img { display: block; width: 100%; }

/* --- Live Chat Wishes Widget (light luxury) --- */
.live-wishes-container {
    position: fixed; bottom: 30px; left: 30px; width: 420px; max-height: 550px;
    background: rgba(250,247,242,0.9); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(44,35,24,0.12), 0 0 0 1px rgba(104, 143, 67,0.2);
    border: 1px solid rgba(104, 143, 67,0.3);
    z-index: 1000; overflow: hidden; display: flex; flex-direction: column;
    transform: translateY(150%); transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.live-wishes-header {
    background: transparent;
    color: var(--color-gold2); padding: 20px 24px 16px;
    font-family: var(--font-body); font-size: 0.85rem; font-weight: 700;
    letter-spacing: 5px; text-transform: uppercase;
    border-bottom: 1px solid rgba(104, 143, 67,0.2);
    display: flex; align-items: center; gap: 12px;
}
.live-wishes-header::before {
    content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #27ae60;
    box-shadow: 0 0 8px rgba(39,174,96,0.5);
}

.live-wishes-scroll {
    padding: 20px 24px 24px; flex: 1; overflow-y: hidden; display: flex; flex-direction: column; gap: 16px;
    background: transparent; height: 420px;
    justify-content: flex-end;
}

.wish-item {
    background: #fff; padding: 18px 20px; border-radius: 10px;
    font-size: 1rem; line-height: 1.65; color: var(--color-text-mid); width: 100%;
    opacity: 0; transform: translateY(20px); transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(104, 143, 67,0.15);
    box-shadow: 0 2px 12px rgba(44,35,24,0.06);
    max-height: 300px; flex-shrink: 0;
}

.wish-item.active { opacity: 1; transform: translateY(0); }
.wish-item.exit { opacity: 0; transform: translateY(-20px); max-height: 0; padding-top: 0; padding-bottom: 0; margin-bottom: -16px; border-width: 0; }

.wish-name {
    display: block; font-family: var(--font-heading); font-weight: 700; color: var(--color-gold2);
    margin-bottom: 6px; font-size: 1.1rem; font-style: italic;
}

/* --- Flying Wish Envelope Animation --- */
.flying-wish {
    position: fixed;
    z-index: 99999;
    pointer-events: none;
    width: 60px;
    height: 44px;
    background: linear-gradient(135deg, #fff 60%, #f5efe3 100%);
    border: 1.5px solid #a7c787;
    border-radius: 6px;
    box-shadow: 0 4px 18px rgba(167, 199, 135,0.45), 0 2px 8px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transform-origin: center center;
}
.flying-wish::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 50%;
    background: linear-gradient(135deg, #a7c787 0%, #f5efe3 100%);
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    border-radius: 6px 6px 0 0;
}
.flying-wish-text {
    position: relative;
    z-index: 1;
    font-size: 0.55rem;
    color: #688f43;
    font-style: italic;
    font-family: 'Playfair Display', serif;
    letter-spacing: 0.3px;
    line-height: 1.2;
    text-align: center;
    max-width: 46px;
    overflow: hidden;
    padding-top: 14px;
}

/* Live chat pulse when wish arrives */
@keyframes chat-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(104,143,67,0.7); transform: scale(1); }
    40%  { box-shadow: 0 0 0 12px rgba(104,143,67,0.2); transform: scale(1.03); }
    100% { box-shadow: 0 0 0 0 rgba(104,143,67,0); transform: scale(1); }
}
.chat-pulse-anim {
    animation: chat-pulse 0.7s ease-out;
}

/* ── DOT NAVIGATION ──────────────────────────────────────────────────────── */
.dot-nav {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 48px;
    align-items: flex-end;
}

.dot-item {
    display: flex;
    align-items: center;
    gap: 22px;
    cursor: pointer;
    text-decoration: none;
    padding: 14px 0;
}

.dot-label {
    font-family: var(--font-body);
    font-size: 1.3rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-text-mid);
    opacity: 0;
    transform: translateX(6px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    white-space: nowrap;
    font-weight: 700;
}

.dot-item:hover .dot-label,
.dot-item.active .dot-label {
    opacity: 1;
    transform: translateX(0);
}

.dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 4px solid var(--color-gold);
    background: transparent;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.dot-item:hover .dot {
    background: var(--color-gold-lt);
    transform: scale(1.3);
}

.dot-item.active .dot {
    background: var(--color-gold);
    transform: scale(1.4);
    box-shadow: 0 0 0 3px rgba(104, 143, 67,0.2);
}

/* --- Timeline Section --- */
.timeline {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0; left: 50%;
    width: 2px;
    background: rgba(104, 143, 67, 0.3);
    transform: translateX(-50%);
}
.timeline-item {
    position: relative; margin-bottom: 40px; width: 100%;
    display: flex; align-items: center;
}
.timeline-item:nth-child(odd) { justify-content: flex-end; }
.timeline-item:nth-child(even) { justify-content: flex-start; }
.timeline-dot {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: 16px; height: 16px; background: #fff; border: 4px solid var(--color-gold);
    border-radius: 50%; z-index: 1; box-shadow: 0 0 0 4px rgba(104, 143, 67, 0.1);
}
.timeline-content {
    width: 42%; padding: 20px; background: #fff; border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05); border: 1px solid rgba(104, 143, 67, 0.1);
}
.timeline-item:nth-child(odd) .timeline-content { text-align: left; }
.timeline-item:nth-child(even) .timeline-content { text-align: right; }

.time-text {
    font-family: var(--font-body);
    font-weight: 700;
    color: var(--color-gold);
    font-size: 1.2rem;
    margin-bottom: 5px;
    letter-spacing: 2px;
}
.event-text {
    font-family: var(--font-body);
    color: var(--color-text-mid);
    font-size: 1rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .timeline::before { left: 20px; }
    .timeline-dot { left: 20px; }
    .timeline-item:nth-child(odd), .timeline-item:nth-child(even) { justify-content: flex-end; }
    .timeline-content { width: calc(100% - 50px); text-align: left !important; }
}

/* ── SCROLL REVEAL ANIMATIONS ────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.88);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible,
.reveal-left.visible,
.reveal-right.visible,
.reveal-scale.visible {
    opacity: 1;
    transform: none;
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.35s; }
.reveal-delay-4 { transition-delay: 0.5s; }
.reveal-delay-5 { transition-delay: 0.65s; }

/* ── AUTO-SCROLL PROGRESS BAR ────────────────────────────────────────────── */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gold-lt), var(--color-gold));
    width: 0%;
    z-index: 9997;
    transition: width 0.2s ease;
    pointer-events: none;
}

/* ── AUTO-SCROLL HINT ────────────────────────────────────────────────────── */
#autoscroll-hint {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 900;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-size: 0.6rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-text-dim);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}
#autoscroll-hint.visible { opacity: 1; }
#autoscroll-hint .hint-line {
    width: 30px; height: 1px;
    background: var(--color-gold-lt);
}

/* ══════════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE (max-width: 768px)
   ══════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {

    /* ── Dot Navigation ─────────────────────────────────────────── */
    .dot-nav {
        right: 12px;
        gap: 28px;
    }
    .dot-item {
        padding: 8px 0;
        gap: 10px;
    }
    /* Hide text labels on mobile – dots only */
    .dot-label {
        display: none;
    }
    .dot {
        width: 10px;
        height: 10px;
    }

    /* ── Live Chat Widget ───────────────────────────────────────── */
    .live-wishes-container {
        width: calc(100vw - 32px);
        left: 16px;
        right: 16px;
        bottom: 16px;
        max-height: 220px;
    }
    .live-wishes-header {
        padding: 12px 16px 10px;
        font-size: 0.7rem;
        letter-spacing: 3px;
    }
    .live-wishes-scroll {
        height: 130px;
        padding: 12px 16px 16px;
        gap: 10px;
    }
    .wish-item {
        padding: 10px 14px;
        font-size: 0.88rem;
    }

    /* ── Gallery (Khoảnh Khắc) ──────────────────────────────────── */
    #masonry-gallery {
        column-count: 2 !important;
        column-gap: 10px !important;
    }
    .masonry-item {
        margin-bottom: 10px;
    }

    /* ── Section Padding ────────────────────────────────────────── */
    #gallery-section,
    #baohy-section,
    #timeline-section,
    #interactive-cards-section,
    #location-section,
    #news-section,
    #rsvp-section {
        padding: 60px 16px !important;
    }

    /* ── Báo Hỷ Image ───────────────────────────────────────────── */
    #baohy-section img {
        max-width: 100%;
    }

    /* ── Section Titles ─────────────────────────────────────────── */
    .luxury-section-title {
        font-size: 1.8rem;
    }

    /* ── Timeline ───────────────────────────────────────────────── */
    .timeline {
        padding: 10px 0;
    }

    /* ── Cards (Thiệp Cưới / Sổ Lưu Bút) ──────────────────────── */
    .card-scene {
        width: 92vw !important;
        max-width: 380px !important;
        height: 560px !important;
    }
    #cards-container {
        gap: 30px !important;
        padding: 20px 16px !important;
    }

    /* ── Intro / Splash Screen ──────────────────────────────────── */
    .i-names {
        font-size: clamp(1.6rem, 10vw, 2.4rem) !important;
    }
    .intro-wrap {
        padding: 0 20px;
    }

    /* ── Lightbox ───────────────────────────────────────────────── */
    .lightbox-img {
        max-width: 95vw;
        max-height: 85vh;
    }
}

/* Extra small phones */
@media (max-width: 480px) {
    #masonry-gallery {
        column-count: 2 !important;
    }
    .live-wishes-container {
        max-height: 190px;
    }
}