:root {
    --gold: #D4AF37;
    --gold-light: #F9E5AA;
    --gold-dark: #8A6E2F;
    --black: #080808;
    --dark-gray: #121212;
    --text-white: #F4F4F4;
    --text-gray: #9E9E9E;
    --glass-bg: rgba(18, 18, 18, 0.85);
    --glass-border: rgba(255, 255, 255, 0.08);
    --gold-gradient: linear-gradient(135deg, #8A6E2F 0%, #D4AF37 50%, #F9E5AA 100%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--black);
    color: var(--text-white);
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    width: 100vw;
}

/* Luxury Grain Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: overlay;
}

/* Background Handling */
.slide {
    height: 100vh;
    height: 100dvh;
    width: 100vw;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    scroll-snap-align: start;
    overflow: hidden;
    padding: 20px;
    background: radial-gradient(circle at center, #1a1a1a 0%, #000000 100%);
    background-size: cover;
    background-position: center;
}

/* Backgrounds */
.bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-size: cover;
    background-position: center;
}
.bg-layer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5); /* Unified overlay */
}

#slide1 .bg-layer { background-image: url('background_luxury.png'); }
#slide2 .bg-layer { background-image: url('bg_power.png'); }
#slide3 .bg-layer { background-image: url('bg_tech.png'); }
#slide4 .bg-layer { background-image: url('bg_texture.png'); }

/* Vignette effect */
.slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 40%, #000 100%);
    pointer-events: none;
    z-index: 1;
}

.content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 400px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

/* Scroll Container */
.scroll-container {
    height: 100vh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}
.scroll-container::-webkit-scrollbar {
    display: none;
}

/* Typography */
h1.main-title {
    font-family: 'Playfair Display', serif;
    font-size: 3.2rem;
    line-height: 0.95;
    text-transform: uppercase;
    margin-bottom: 15px;
    letter-spacing: -1px;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.pre-title {
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--gold);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 5px;
    opacity: 0.9;
}

.gold-text {
    color: var(--gold);
    background: linear-gradient(to right, #bf953f, #fcf6ba, #e8c85e, #b38728, #fbf5b7, #aa771c);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    animation: shineText 4s linear infinite;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.2);
}

@keyframes shineText {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.trust-badge {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(212, 175, 55, 0.3);
    padding: 8px 18px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.65rem;
    backdrop-filter: blur(10px);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.stars { color: var(--gold); letter-spacing: 1px; font-size: 0.8rem; }
.review-text { color: #fff; font-weight: 500; letter-spacing: 1.5px; }

.subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    color: #ccc;
    margin-top: 15px;
    max-width: 85%;
    line-height: 1.6;
    font-weight: 300;
}

/* Product Image */
.product-hero {
    position: relative;
    width: 100%;
    max-width: 320px; 
    margin: 10px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.product-img, .product-video {
    width: 100%;
    height: auto;
    max-height: 320px; 
    object-fit: contain;
    filter: drop-shadow(0 15px 30px rgba(0,0,0,0.9));
    z-index: 2;
    transition: transform 0.3s ease;
    border-radius: 12px;
}

.unmute-btn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--gold);
    color: var(--gold);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-transform: uppercase;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}
.unmute-btn:hover {
    background: var(--gold);
    color: #000;
    transform: scale(1.05);
}

.hero-specs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 8px 15px;
    border-radius: 30px;
    margin-top: -15px;
    z-index: 3;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}
.spec-item { display: flex; align-items: center; gap: 6px; color: #eee; }
.spec-icon { font-size: 0.9rem; }
.spec-divider { width: 1px; height: 12px; background: rgba(255,255,255,0.2); }

.glow-effect {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(212, 175, 55, 0.3) 0%, rgba(0,0,0,0) 70%);
    z-index: 1;
    pointer-events: none;
    animation: pulseGlow 4s infinite ease-in-out;
}

/* Animations */
.float-anim {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@keyframes pulseGlow {
    0% { opacity: 0.5; transform: scale(0.9); }
    50% { opacity: 0.8; transform: scale(1.1); }
    100% { opacity: 0.5; transform: scale(0.9); }
}

/* Arrow */
.arrow-down {
    margin-top: 20px;
    color: var(--gold);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    animation: bounce 2s infinite;
}
.pulse-text {
    font-size: 0.7rem;
    margin-top: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

/* Professional Cards (Slide 2) */
.feature-card {
    background: linear-gradient(145deg, rgba(25, 25, 25, 0.9), rgba(10, 10, 10, 0.95));
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-left: 3px solid var(--gold);
    padding: 20px 15px;
    width: 100%;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 12px;
    backdrop-filter: blur(20px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}
.feature-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 6px;
}
.tag-pro {
    font-size: 0.6rem;
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(212, 175, 55, 0.2);
    font-weight: 700;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.03), transparent);
    transform: skewX(-20deg) translateX(-150%);
    animation: shimmerCard 6s infinite;
}
@keyframes shimmerCard {
    0% { transform: skewX(-20deg) translateX(-150%); }
    20% { transform: skewX(-20deg) translateX(150%); }
    100% { transform: skewX(-20deg) translateX(150%); }
}

.icon-box {
    background: linear-gradient(135deg, #2a2a2a, #000);
    border: 1px solid rgba(212, 175, 55, 0.3);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--gold);
    flex-shrink: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.feature-text {
    text-align: left;
}

.feature-text h3 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.feature-text p {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.4;
}

/* Tech Grid (Slide 3) */
.section-desc-small {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 15px;
    font-style: italic;
}
.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
    margin: 10px 0 20px 0;
}
.ing-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 12px;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: all 0.3s ease;
}
.ing-item:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(212,175,55,0.3);
}
.ing-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 4px;
}
.ing-name {
    color: var(--gold);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
}
.ing-conc {
    font-size: 0.65rem;
    color: #666;
}
.ing-desc {
    font-size: 0.7rem;
    color: #aaa;
    line-height: 1.2;
}
.citation-box {
    background: rgba(212, 175, 55, 0.05);
    border-left: 2px solid var(--gold);
    padding: 15px;
    margin-top: 20px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    text-align: left;
}
.citation-icon { font-size: 1.5rem; }
.citation { font-style: italic; color: #ddd; font-size: 0.85rem; line-height: 1.5; }

/* Modern Chart */
.chart-visual {
    width: 100%;
    background: rgba(0,0,0,0.3);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
}
.chart-header {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 15px;
    text-align: left;
    letter-spacing: 1px;
}
.bar-container { margin-bottom: 12px; }
.bar-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.85rem;
}
.bar-val { font-weight: bold; }
.bar-track {
    height: 6px;
    background: #222;
    border-radius: 3px;
    overflow: hidden;
}
.bar-fill { height: 100%; border-radius: 3px; transition: width 1.5s ease-out; }
.bar-fill.gray { background: #444; }
.bar-fill.gold { 
    background: linear-gradient(90deg, var(--gold-dark), var(--gold));
    box-shadow: 0 0 15px rgba(212,175,55,0.4);
}

/* Offer (Slide 4) */
.offer-switcher {
    display: flex;
    background: rgba(0,0,0,0.5);
    border-radius: 30px;
    padding: 4px;
    margin-bottom: 20px;
    width: 100%;
    max-width: 320px;
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
}
.switch-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: #888;
    padding: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}
.switch-btn.active {
    background: var(--gold);
    color: #000;
    box-shadow: 0 2px 15px rgba(212,175,55,0.4);
}

.offer-card {
    background: linear-gradient(145deg, #111, #0a0a0a);
    border: 1px solid rgba(212, 175, 55, 0.2);
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    padding: 20px;
    border-radius: 20px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.offer-details {
    display: none;
    animation: slideUpFade 0.4s ease-out forwards;
}
.offer-details.active {
    display: block;
}
@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.offer-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--gold);
    color: #000;
    font-weight: 900;
    font-size: 0.7rem;
    padding: 6px 15px;
    border-bottom-left-radius: 15px;
    text-transform: uppercase;
    box-shadow: -2px 2px 10px rgba(0,0,0,0.5);
    z-index: 5;
}

.offer-visual {
    height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 15px 0 10px;
}
.offer-img {
    max-height: 100%;
    width: auto;
    filter: drop-shadow(0 15px 25px rgba(0,0,0,0.6));
    transition: transform 0.3s ease;
}
.offer-img.large { transform: scale(1.1); }

.offer-info {
    text-align: center;
    margin-bottom: 20px;
}
.pack-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: linear-gradient(to right, #fff, #ccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.benefit-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    width: 90%;
    text-align: center;
}
.benefit-list li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.95rem;
    color: #ccc;
    letter-spacing: 0.5px;
}
.benefit-list li:last-child { border-bottom: none; }
.benefit-list li.bonus {
    color: var(--gold);
    font-weight: 600;
    text-shadow: 0 0 10px rgba(212,175,55,0.2);
}
.benefit-list li.dimmed { color: #555; font-size: 0.8rem; }
.benefit-list li strong { color: #fff; font-size: 1.1em; }

.common-actions {
    margin-top: 10px;
}
.trust-row {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: #888;
}
.secure-icon { color: #4cd137; }
.payment-methods.compact {
    margin-top: 8px;
    font-size: 0.65rem;
    opacity: 0.5;
}

/* Buttons */
.btn-primary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #FFD700 0%, #FDB931 30%, #9f7928 100%);
    color: #000;
    border: none;
    padding: 18px 24px;
    font-size: 1.1rem;
    font-weight: 900;
    border-radius: 8px;
    cursor: pointer;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    box-shadow: 0 4px 15px rgba(253, 185, 49, 0.4), inset 0 1px 0 rgba(255,255,255,0.4);
    transition: all 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    overflow: hidden;
    margin-bottom: 12px;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to right,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.4) 50%,
        rgba(255,255,255,0) 100%
    );
    transform: rotate(30deg);
    animation: shineSweep 3s infinite ease-in-out;
}

@keyframes shineSweep {
    0% { transform: translateX(-100%) rotate(30deg); }
    20% { transform: translateX(100%) rotate(30deg); }
    100% { transform: translateX(100%) rotate(30deg); }
}

.btn-icon-wrapper {
    background: rgba(0,0,0,0.1);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    justify-content: center;
    align-items: center;
}



.btn-primary:active {
    transform: scale(0.96);
    box-shadow: 0 2px 5px rgba(253, 185, 49, 0.2);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--gold);
    color: var(--gold);
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    margin-top: 15px;
    text-transform: uppercase;
}

.cta-pulse {
    animation: pulseBtn 2s infinite;
}
@keyframes pulseBtn {
    0% { box-shadow: 0 0 0 0 rgba(253, 185, 49, 0.6); }
    70% { box-shadow: 0 0 0 15px rgba(253, 185, 49, 0); }
    100% { box-shadow: 0 0 0 0 rgba(253, 185, 49, 0); }
}

.secure-badge {
    margin-top: 5px;
    font-size: 0.7rem;
    color: #888;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(255,255,255,0.03);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}
.secure-badge span {
    color: #4cd137; /* Green for trust */
}

/* Navigation Dots */
.progress-container {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.dot {
    width: 8px;
    height: 8px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}
.dot.active {
    background: var(--gold);
    box-shadow: 0 0 10px var(--gold);
    transform: scale(1.3);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    align-items: center;
    justify-content: center;
}
.modal-content {
    background: #222;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid var(--gold);
    width: 80%;
}
.modal-content h3 { color: var(--gold); margin-bottom: 10px; }
.spinner {
    border: 4px solid #333;
    border-top: 4px solid var(--gold);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 20px auto 0;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* Desktop Adjustment - Center mobile view */
@media (min-width: 768px) {
    body {
        background-color: #000;
        display: flex;
        justify-content: center;
    }
    .scroll-container, .slide, .modal {
        max-width: 480px; /* Mobile frame width */
        border-left: 1px solid #333;
        border-right: 1px solid #333;
    }
    .progress-container {
        right: calc(50% - 220px); /* Adjust dots position */
    }
}