/* --- LANDING PAGE STYLES (v3.3 - Clean & Simple) --- */

/* 1. DYNAMIC THEME ENGINE */
:root {
    /* LIGHT MODE (Default) */
    --app-bg: #F8F9FA;
    --app-surface: #ffffff;
    --app-card-bg: rgba(0, 0, 0, 0.03);
    --app-text: #1a1a1a;
    --app-text-muted: #6c757d;
    --app-border: rgba(0, 0, 0, 0.08);
    
    --app-accent: #000000;
    --app-accent-fg: #ffffff;
    --app-accent-glow: rgba(0, 0, 0, 0.15);
    
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: 1px solid rgba(0, 0, 0, 0.05);
    
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --radius-pill: 100px;
}

[data-theme="dark"] {
    --app-bg: #050505;
    --app-surface: #121212;
    --app-card-bg: rgba(255, 255, 255, 0.04);
    --app-text: #ffffff;
    --app-text-muted: #949494;
    --app-border: rgba(255, 255, 255, 0.1);
    
    --app-accent: #D4F759;
    --app-accent-fg: #000000;
    --app-accent-glow: rgba(212, 247, 89, 0.3);
    
    --glass-bg: rgba(20, 20, 20, 0.85);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
}

body {
    background-color: var(--app-bg); 
    color: var(--app-text);
    font-family: var(--font-body); 
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* 2. PERFORMANCE OPTIMIZATIONS */
.noise-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: 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='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none; z-index: 0; opacity: 0.6; mix-blend-mode: overlay;
    will-change: opacity;
}

.gs-reveal, .gs-scale, .gs-up {
    opacity: 1; 
    visibility: visible;
}

/* 3. THEME TOGGLE */
.theme-wrapper {
    position: fixed; top: 20px; right: 20px; z-index: 10000;
    display: flex; align-items: center; gap: 10px;
}
.theme-toggle {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--glass-bg); 
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border); color: var(--app-text);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}
.theme-toggle:hover { transform: scale(1.1) rotate(15deg); }

.theme-hint {
    background: var(--app-accent); color: var(--app-accent-fg);
    padding: 6px 14px; border-radius: 12px; font-size: 0.85rem; font-weight: 700;
    opacity: 0; transform: translateX(10px);
    animation: hint-enter 0.6s ease 3s forwards, hint-pulse 2s infinite 3.6s, hint-exit 0.6s ease 9s forwards;
    pointer-events: none; white-space: nowrap;
    box-shadow: 0 5px 15px var(--app-accent-glow);
}
.theme-hint::after {
    content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
    border-width: 6px; border-style: solid;
    border-color: transparent transparent transparent var(--app-accent);
}

@keyframes hint-enter { to { opacity: 1; transform: translateX(0); } }
@keyframes hint-pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes hint-exit { to { opacity: 0; transform: translateX(10px); } }

/* 4. SCROLL INDICATOR (CLEAN LINEAR SWIPE) */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 20;
    opacity: 0;
    animation: fade-in-up 1s ease 1.5s forwards;
    pointer-events: none;
    margin-top: 20px;
}

.scroll-text {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    color: var(--app-text-muted);
    opacity: 0.8;
}

.scroll-hand-wrapper {
    position: relative;
    width: 40px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: flex-end; /* Start from bottom */
}

.scroll-hand-icon {
    font-size: 1.8rem;
    color: var(--app-text);
    opacity: 0;
    text-shadow: 0 5px 15px var(--app-accent-glow);
    /* Simple linear movement */
    animation: simple-swipe 2s ease-in-out infinite;
}

@keyframes simple-swipe {
    0% {
        opacity: 0;
        transform: translateY(15px); /* Start slightly below */
    }
    30% {
        opacity: 1;
        transform: translateY(5px); /* Fade in */
    }
    70% {
        opacity: 1;
        transform: translateY(-20px); /* Move Up */
    }
    100% {
        opacity: 0;
        transform: translateY(-30px); /* Fade out at top */
    }
}

@keyframes fade-in-up { 
    from { opacity: 0; transform: translate(0, 20px); } 
    to { opacity: 1; transform: translate(0, 0); } 
}

/* 5. LAYOUT & TYPOGRAPHY */
body.immersive-mode .site-header { transform: translateY(-150%); pointer-events: none; }
body.immersive-mode .mobile-bottom-nav { transform: translateY(150%); pointer-events: none; }
.site-header, .mobile-bottom-nav { transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }

.landing-wrapper { min-height: 100vh; width: 100%; overflow-x: hidden; opacity: 0; padding-bottom: 140px; position: relative; z-index: 1; transition: opacity 0.5s ease; }

.headline-fluid {
    font-family: var(--font-heading); font-size: clamp(2.2rem, 5vw, 4.2rem);
    line-height: 1.1; font-weight: 800; letter-spacing: -0.02em;
    color: var(--app-text); margin-bottom: 0.4em;
}
.badge-pill {
    font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1.5px;
    font-weight: 700; padding: 6px 16px; border-radius: 50px;
    background: var(--app-accent); color: var(--app-accent-fg);
    display: inline-block; margin-bottom: 15px;
    box-shadow: 0 5px 15px var(--app-accent-glow);
}
.subhead-pro { font-size: 1.15rem; color: var(--app-text-muted); font-weight: 400; line-height: 1.6; }

/* 6. HERO SECTION */
.hero-section {
    position: relative; min-height: calc(100dvh - 130px);
    display: flex; flex-direction: column; justify-content: center; padding-top: 20px;
}
.hero-media-container {
    position: relative; perspective: 1000px;
    display: flex; justify-content: center; align-items: center;
}
.hero-media-container img {
    width: 100%; height: auto; max-height: 60vh;
    object-fit: contain; 
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15));
    transition: transform 0.1s ease-out; will-change: transform;
}
.hero-badge {
    position: absolute; top: 15%; right: 10%;
    background: rgba(255, 255, 255, 0.9); color: #000;
    padding: 8px 18px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 800;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transform: rotate(6deg); z-index: 5; border: 2px solid #fff;
}

/* 7. CONTROLS */
.price-display { font-family: var(--font-heading); margin-bottom: 20px; display: flex; align-items: center; gap: 12px; }
.price-val { font-size: 2rem; font-weight: 800; color: var(--app-text); letter-spacing: -0.5px; }
.price-strike { 
    position: relative; font-size: 1.25rem; color: var(--app-text-muted); 
    font-weight: 500; text-decoration: none !important; margin-right: 5px;
}
.price-strike::after {
    content: ''; position: absolute; left: -5%; top: 48%; width: 110%; height: 2px;
    background: #ff3b30; transform: rotate(-10deg); border-radius: 100%;
    box-shadow: 0 0 2px rgba(255, 59, 48, 0.4);
}

.variation-selector-group { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 25px; }
.var-option {
    cursor: pointer; padding: 10px 16px; border-radius: var(--radius-sm);
    background: var(--app-card-bg); border: 1px solid var(--app-border);
    color: var(--app-text-muted); font-weight: 600; font-size: 0.9rem;
    display: flex; align-items: center; gap: 8px; transition: all 0.2s ease;
}
.var-option:hover { background: var(--app-border); color: var(--app-text); transform: translateY(-2px); }
.var-option.active {
    background: var(--app-accent); color: var(--app-accent-fg);
    border-color: var(--app-accent); box-shadow: 0 5px 20px var(--app-accent-glow);
}
.var-img-thumb { width: 24px; height: 24px; border-radius: 4px; object-fit: cover; background: #fff; }

.btn-shine-anim {
    position: relative; overflow: hidden;
    background: var(--app-text); color: var(--app-bg) !important;
    font-weight: 800; border: none; padding: 16px 30px; border-radius: var(--radius-pill);
    font-size: 1.05rem; width: auto; display: inline-block;
    transition: transform 0.2s ease, opacity 0.2s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.btn-shine-anim:hover { transform: scale(1.03); opacity: 0.95; }
.btn-shine-anim:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }

/* 8. ISLAND BAR (Performance Optimized) */
#island-bar {
    position: fixed; 
    bottom: 25px; 
    left: 50%;
    transform: translate(-50%, 150%);
    width: 94%; 
    max-width: 500px; 
    height: 74px;
    
    background: var(--glass-bg); 
    backdrop-filter: blur(24px); 
    -webkit-backdrop-filter: blur(24px);
    border: var(--glass-border); 
    border-radius: var(--radius-pill);
    box-shadow: 0 20px 60px rgba(0,0,0,0.25); 
    
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    padding: 6px 8px 6px 20px;
    z-index: 99999;
    
    will-change: transform;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#island-bar.visible { 
    transform: translate(-50%, 0); 
}

.island-left { display: flex; align-items: center; gap: 12px; overflow: hidden; }
.island-thumb { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; border: 1px solid var(--app-border); flex-shrink: 0; }
.island-meta { display: flex; flex-direction: column; overflow: hidden; }
.island-name { color: var(--app-text); font-weight: 700; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px; }
.island-price-block { font-size: 0.85rem; display: flex; gap: 6px; align-items: center; }
.island-strike { text-decoration: line-through; color: var(--app-text-muted); font-size: 0.8em; position: relative; }
.island-strike::after { content: ''; position: absolute; left: -10%; top: 50%; width: 120%; height: 1px; background: #ff3b30; transform: rotate(-5deg); }
.island-val { color: var(--app-text); font-weight: 800; }
.btn-island {
    background: var(--app-text); color: var(--app-bg); border: none; padding: 10px 24px;
    border-radius: var(--radius-pill); font-weight: 700; font-size: 0.9rem; white-space: nowrap; flex-shrink: 0;
}

/* 9. MOBILE OPTIMIZATION */
@media (max-width: 768px) {
    .noise-overlay { display: none !important; }
    .theme-toggle, .mobile-controls-area, #island-bar {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: var(--app-surface);
    }

    .theme-wrapper { top: 90px; right: 15px; }
    .landing-wrapper { padding-bottom: 120px; }
    
    .hero-section { 
        min-height: calc(100dvh - 120px); 
        justify-content: center; 
        padding: 0;
        padding-bottom: 20px; 
    }
    
    .headline-fluid { font-size: 1.8rem; margin-bottom: 5px; }
    .badge-pill { margin-bottom: 5px; font-size: 0.7rem; padding: 4px 12px; }
    
    .hero-media-container { margin-bottom: 10px; }
    .hero-media-container img { max-height: 28vh; filter: drop-shadow(0 15px 30px rgba(0,0,0,0.1)); }
    
    .mobile-controls-area {
        background: var(--app-surface); 
        border: var(--glass-border);
        border-radius: var(--radius-lg); padding: 15px;
        text-align: center;
    }
    
    .price-display { margin-bottom: 8px; }
    .variation-selector-group { justify-content: center; gap: 8px; margin-bottom: 8px; }
    .var-option { padding: 8px 12px; font-size: 0.85rem; }
    .btn-shine-anim { width: 100%; padding: 12px; font-size: 1rem; }
    
    .hero-mobile-layout {
        display: flex; flex-direction: column; 
        justify-content: center; height: 100%;
    }

    #island-bar {
        bottom: 20px;
        width: 92%;
        padding-left: 15px;
    }
}

@media (min-width: 769px) {
    .scroll-indicator { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); }
}

/* LOADER */
#site-loader {
    position: fixed; inset: 0; background: var(--app-bg); z-index: 99999;
    display: flex; align-items: center; justify-content: center; transition: opacity 0.5s;
}
.loader-spinner {
    width: 50px; height: 50px; border: 3px solid var(--app-border);
    border-top-color: var(--app-accent); border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }