/* --- Global Design Tokens --- */
:root {
    /* Base Dark Theme (Default) */
    --bg-base: #0c0d10; 
    --surface-1: #15161a;
    --surface-elevated: #1a1c23;
    --text-primary: #f2f2f3;
    --text-muted: #9ba1b0;
    --accent: #10b981; 
    --accent-glow: rgba(16, 185, 129, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.15);
    --shadow-inner: inset 0 1px 1px rgba(255, 255, 255, 0.06); 
    --shadow-elevated: 0 16px 40px rgba(0, 0, 0, 0.4), inset 0 1px 2px rgba(255, 255, 255, 0.1);
    
    --radius-sm: 8px; --radius-md: 16px; --radius-lg: 24px;
}

/* Light Theme Variables */
.light-theme {
    --bg-base: #f8fafc;
    --surface-1: #ffffff;
    --surface-elevated: #f1f5f9;
    --text-primary: #0f172a;
    --text-muted: #64748b;
    --accent: #059669;
    --border-subtle: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.15);
    --shadow-inner: none;
    --shadow-elevated: 0 12px 32px rgba(0, 0, 0, 0.08);
}

/* Theme Icon Logic */
.light-theme .sun-icon { display: none; }
.dark-theme .moon-icon { display: none; }
.icon-btn { background: none; border: 1px solid var(--border-strong); color: var(--text-primary); border-radius: 50%; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.2s; }
.icon-btn:hover { background: var(--surface-1); }

/* --- Base & Reset --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; transition: background-color 0.3s ease, color 0.3s ease; }
body { background-color: var(--bg-base); color: var(--text-primary); font-family: 'Inter', sans-serif; line-height: 1.6; overflow-x: hidden; }

/* --- Typography --- */
h1 { font-size: clamp(2.5rem, 6vw, 4rem); line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 24px; font-weight: 700; }
h2 { font-size: 2rem; margin-bottom: 16px; font-weight: 600; letter-spacing: -0.02em;}
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 8px; }
.text-muted { color: var(--text-muted); }
.body-large { font-size: 1.125rem; max-width: 600px; margin-bottom: 32px; }
.overline { color: var(--accent); font-size: 0.875rem; text-transform: uppercase; font-weight: 700; display: block; margin-bottom: 8px;}
.dot { color: var(--accent); }

/* --- Dynamic Hook --- */
.dynamic-hook { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border-strong); padding: 6px 14px; border-radius: 100px; margin-bottom: 24px; text-decoration: none; color: var(--text-primary); font-size: 0.875rem; font-weight: 600; transition: 0.2s; }
.dynamic-hook:hover { border-color: var(--accent); }
.status-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 12px var(--accent-glow); }

/* --- Layout --- */
.section-padding { padding: 96px 5%; max-width: 1280px; margin: 0 auto; }
.section-header { margin-bottom: 40px; }

/* --- Components --- */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 14px 28px; border-radius: var(--radius-sm); font-weight: 600; text-decoration: none; transition: 0.2s; cursor: pointer; border: none; font-size: 1rem;}
.btn-primary { background: var(--text-primary); color: var(--bg-base); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); opacity: 0.9;}
.btn-secondary { background: transparent; border: 1px solid var(--border-strong); color: var(--text-primary); }
.btn-secondary:hover { background: var(--surface-elevated); }
.input-field { background: var(--surface-1); border: 1px solid var(--border-strong); padding: 12px 16px; border-radius: var(--radius-sm); color: var(--text-primary); outline: none; }
.input-field:focus { border-color: var(--accent); }

/* --- Navigation --- */
.glass-nav { position: fixed; width: 100%; top: 0; z-index: 100; background: rgba(12, 13, 16, 0.7); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-subtle); }
.light-theme .glass-nav { background: rgba(255, 255, 255, 0.8); }
.nav-container { display: flex; justify-content: space-between; align-items: center; padding: 16px 5%; max-width: 1280px; margin: 0 auto; }
.logo { font-weight: 700; font-size: 1.25rem; color: var(--text-primary); text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-item { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.nav-item:hover { color: var(--text-primary); }

/* --- Hero --- */
.hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; min-height: 90vh; padding-top: 120px; gap: 64px;}
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.trust-indicators { display: flex; gap: 24px; font-size: 0.875rem; font-weight: 600;}
.trust-item { display: flex; align-items: center; gap: 8px; }
.icon-sm { width: 16px; height: 16px; color: var(--accent); }
.icon-accent { color: var(--accent); width: 24px; height: 24px; }

/* --- Interactive CSS 3D Object --- */
.hero-3d-wrapper { perspective: 1000px; display: flex; justify-content: center; align-items: center; height: 400px; }
.card-3d { width: 300px; height: 350px; position: relative; transform-style: preserve-3d; transition: transform 0.1s ease; }
.card-3d-layer { position: absolute; width: 100%; height: 100%; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); display: flex; flex-direction: column; justify-content: center; align-items: center; }
.base-layer { background: var(--surface-1); transform: translateZ(0px); box-shadow: var(--shadow-elevated); }
.mid-layer { transform: translateZ(40px); background: transparent; padding: 24px;}
.top-layer { transform: translateZ(80px); background: transparent; font-weight: 600; color: var(--text-primary); gap: 16px;}
.icon-large { width: 48px; height: 48px; color: var(--accent); }
.mock-chart { width: 100%; height: 120px; border-bottom: 2px solid var(--border-strong); position: relative; margin-bottom: 16px;}
.mock-bar { width: 40%; height: 80px; background: var(--accent); opacity: 0.8; border-radius: 4px 4px 0 0; position: absolute; bottom: 0; left: 10%;}

/* --- Bento Cards & Layouts --- */
.bento-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.bento-card { background: var(--surface-1); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 32px; box-shadow: var(--shadow-inner); transition: 0.3s; }
.bento-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-elevated); }
.card-icon-wrapper { width: 48px; height: 48px; border-radius: var(--radius-sm); background: var(--surface-elevated); border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: center; margin-bottom: 24px; }

/* Product of the Week */
.featured-product { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding: 40px; align-items: center;}
.product-video-placeholder { 
    background-image: linear-gradient(rgba(12, 13, 16, 0.4), rgba(12, 13, 16, 0.8)), url('https://images.unsplash.com/photo-1618005182384-a83a8bd57fbe?q=80&w=1000&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    border: 1px solid var(--border-strong); 
    border-radius: var(--radius-sm); 
    height: 280px; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    color: var(--text-primary); 
    gap: 12px; 
    font-weight: 600;
    position: relative;
    box-shadow: var(--shadow-inner);
}
.play-icon { width: 48px; height: 48px; color: var(--text-primary); z-index: 2; transition: 0.2s; cursor: pointer; }
.play-icon:hover { color: var(--accent); transform: scale(1.1); }


/* --- Toast Notifications --- */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 1000; display: flex; flex-direction: column; gap: 12px; }
.toast { background: var(--surface-elevated); border: 1px solid var(--border-strong); color: var(--text-primary); padding: 16px 20px; border-radius: var(--radius-sm); box-shadow: var(--shadow-elevated); display: flex; align-items: center; gap: 12px; transform: translateX(120%); opacity: 0; transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.toast.show { transform: translateX(0); opacity: 1; }

/* --- Animations --- */
.animate-fade-in { animation: fadeInUp 0.8s ease forwards; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.scroll-animate { opacity: 0; transform: translateY(30px); transition: 0.8s; }
.scroll-animate.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; } .delay-2 { transition-delay: 0.2s; }

/* --- Mobile Breakpoints --- */
@media (max-width: 768px) {
    .hero { grid-template-columns: 1fr; padding-top: 120px; text-align: center; }
    .hero-actions, .trust-indicators { justify-content: center; }
    .hero-3d-wrapper { display: none; } /* Hide 3D on mobile for performance */
    .bento-grid-2, .featured-product { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}