/* The Eidolon Homepage Core Styles. This file handles the homepage layout, but most importantly, it defines the Zero-JS fallback background logic for the hero section. Because the WebGL shader is computationally expensive and occasionally skipped (due to missing hardware acceleration or low-FPS benchmarks), this CSS fallback is actually the authoritative "default" background. We construct the volumetric space look purely via multiple layered radial and linear gradients, matching the exact `#0a0a1a` deep-space blue constants used in the shader logic so the 1.5s cross-fade is mathematically seamless. Critically, we use `vw` (viewport width) units for the Y-axis constraints of the radial gradients instead of percentages. Using percentages structurally squishes spherical gradients into vertical pills on tall, narrow portrait screens. @Optimization: When the shader successfully boots, it appends the `.webgl-active` class. We use this to kill the CSS `starTwinkle` animations via `display: none` on the pseudo-elements. This recovers mobile CPU time that would otherwise be wasted calculating opacity interpolations behind an opaque, obscuring WebGL canvas. */ .hero { position: relative; /* Rigid height lock — NOT min-height. min-height allows the section to grow when fonts swap in (FOUT) or content changes, dragging the bottom-anchored arrow down then back up. height creates a geometry invariant the arrow trusts. */ height: calc(100svh - 64px); /* 64px fixed header offset */ display: flex; align-items: center; justify-content: center; padding: var(--space-16) 0; overflow: hidden; background: #0a0a1a; } #hero-shader { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; /* Starts invisible and fades in fast on frame 1. Because the hero base is #0a0a1a (matching the shader's deep-space dark), this fade is dark-space → live shader — smooth and imperceptible as a "transition". */ opacity: 0; transition: opacity 350ms ease-out; /* Scroll Performance Optimizations */ will-change: opacity, transform; transform: translateZ(0); contain: strict; } #hero-shader.is-ready { opacity: 1; } /* If WebGL init fails at runtime, hide the blank canvas so the CSS fallback shows. */ .no-webgl #hero-shader { display: none; } /* data-no-shader is set synchronously in the script on mobile. When present, never create the canvas at all. */ [data-no-shader] #hero-shader { display: none; } /* CSS gradient fallback — only active when shader is absent (mobile or hw failure). */ [data-no-shader] .hero, .no-webgl .hero { background: radial-gradient(150vw 80vw at 50% 100%, color-mix(in srgb, var(--accent) 25%, transparent), transparent 70%), radial-gradient(100vw 60vw at 80% 20%, color-mix(in srgb, var(--accent-secondary) 15%, transparent), transparent 60%), linear-gradient(180deg, color-mix(in srgb, var(--bg) 15%, #0a0a1a) 0%, color-mix(in srgb, var(--bg) 25%, #0f0f2e) 40%, color-mix(in srgb, var(--bg) 40%, #1a1a3e) 70%, color-mix(in srgb, var(--accent) 20%, #0f0f2e) 100%); } /* SVG star overlays: only render for the CSS fallback path. On desktop with the shader active, these are never added to the DOM overhead. */ [data-no-shader] .hero::before, .no-webgl .hero::before { content: ''; position: absolute; inset: 0; z-index: 0; background-image: 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} [data-no-shader] .hero::after, .no-webgl .hero::after { content: ''; position: absolute; inset: 0; z-index: 0; background-image: 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} .hero-content { text-align: center; max-width: 800px; position: relative; z-index: 1; background-color: color-mix(in srgb, var(--bg-surface) 65%, transparent); padding: clamp(var(--space-6), 6vw, var(--space-12)); border-radius: 2rem; border: 1px solid color-mix(in srgb, var(--border) 60%, transparent); box-shadow: 0 12px 40px var(--shadow), inset 0 0 0 1px color-mix(in srgb, #ffffff 8%, transparent); } /* Optimization: Only apply the incredibly expensive Gaussian blur if the WebGL volumetric clouds are actually rendering. If we are in the CSS fallback state, the background is just a dark static gradient, meaning the blur yields zero visual benefit while causing catastrophic 100ms+ presentation delays on scroll. */ .webgl-active .hero-content { backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); } .hero-title { font-size: clamp(3rem, 6vw, 5rem); line-height: 1.1; margin-bottom: var(--space-6); color: var(--text-primary); letter-spacing: -0.03em; } .hero-subtitle { font-size: clamp(1.25rem, 2vw, 1.5rem); color: var(--text-secondary); margin-bottom: var(--space-8); max-width: 600px; margin-left: auto; margin-right: auto; } .hero-actions { display: flex; gap: var(--space-4); justify-content: center; align-items: center; flex-wrap: wrap; } /* Scroll Indicator */ .scroll-indicator { position: absolute; bottom: var(--space-8); /* Centering via margin instead of transform, so transform is exclusively owned by the bounce keyframes with zero interpolation conflict. */ left: 50%; margin-left: -24px; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; color: var(--text-primary); background-color: color-mix(in srgb, var(--bg-surface) 80%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid color-mix(in srgb, var(--border) 80%, transparent); box-shadow: 0 4px 16px var(--shadow); animation: bounce 2s infinite; z-index: 2; opacity: 0.85; will-change: transform; transition: opacity var(--transition-base), background-color var(--transition-base), border-color var(--transition-base); } .scroll-indicator:hover { opacity: 1; background-color: var(--bg-surface); /* Scale only — no translateX needed since centering is now via margin-left */ transform: scale(1.05); } .scroll-indicator svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; } @keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0); } 40% { transform: translateY(-10px); } 60% { transform: translateY(-5px); } } /* Features Section */ .features-section { padding: var(--space-24) 0; background-color: var(--bg); position: relative; /* Soft top border to separate from hero shader */ border-top: 1px solid var(--border); } .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-8); margin-top: var(--space-12); } .feature-card { height: 100%; } .feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; background-color: color-mix(in srgb, var(--accent) 15%, transparent); border-radius: var(--radius-sm); margin-bottom: var(--space-5); flex-shrink: 0; } .feature-icon svg { width: 1.5rem; height: 1.5rem; color: var(--accent); } /* How It Works Section */ .steps-section { padding: var(--space-20) 0; background-color: var(--bg-surface); } .steps-container { display: flex; flex-direction: column; gap: var(--space-12); margin-top: var(--space-12); } .step-item { display: flex; gap: var(--space-6); align-items: flex-start; position: relative; } .step-item:not(:last-child)::before { content: ''; position: absolute; top: 48px; left: 24px; bottom: calc(-1 * var(--space-12)); width: 1px; background: color-mix(in srgb, var(--text-secondary) 15%, transparent); z-index: 0; transform: translateX(-50%); } .step-number { flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; background-color: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; line-height: 1; position: relative; z-index: 1; /* Optical Typography Alignment: We force `lining-nums` to disable Lora's Old-Style Figures (which previously gave '3' a descender). Now all numbers rest cleanly on the baseline. Because Lora's line-box still reserves empty space at the bottom for descenders it isn't using, the mathematical box center pushes the digits slightly too high. We apply a soft padding-top pressure to gently shift the flex optical center downward. */ font-variant-numeric: lining-nums tabular-nums; } .step-content h3 { margin-bottom: var(--space-2); } /* Community Section */ .community-section { padding: var(--space-24) 0; text-align: center; background-color: var(--bg); } .social-links { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-6); margin-top: var(--space-8); } .social-card { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-6); border-radius: var(--radius-pill); background: color-mix(in srgb, var(--bg-surface) 20%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid color-mix(in srgb, var(--border) 30%, transparent); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1); color: var(--text-primary); font-weight: 600; transition: all 400ms cubic-bezier(0.16, 1, 0.3, 1); } .social-card:hover { background: color-mix(in srgb, var(--accent) 70%, transparent); border-color: var(--accent); color: #fff; text-decoration: none; transform: translateY(-4px) scale(1.02); box-shadow: 0 12px 32px color-mix(in srgb, var(--accent) 30%, transparent); } .social-card svg { width: 20px; height: 20px; fill: currentColor; } /* Status Banner */ .status-banner { margin-top: var(--space-16); max-width: 600px; margin-left: auto; margin-right: auto; text-align: center; } /* App Preview / Carousel */ .carousel-section { padding: var(--space-20) 0; background-color: var(--bg); position: relative; overflow: hidden; } .carousel-mask { width: 100%; position: relative; } /* Only apply the edge-fade on screens wide enough for it to look good. On phones the fade eats too much of the visible carousel, so we let it run edge-to-edge. */ @media (min-width: 768px) { .carousel-mask { -webkit-mask-image: linear-gradient( to right, transparent, black 120px, black calc(100% - 120px), transparent ); mask-image: linear-gradient( to right, transparent, black 120px, black calc(100% - 120px), transparent ); } } @keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(calc(-50% - (var(--space-6) / 2))); } } .carousel-slide { flex: 0 0 auto; width: min(80vw, 320px); /* iPhone aspect width */ transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); } .carousel-slide:hover { transform: translateY(-8px); } .mockup-img { width: 100%; height: auto; border-radius: 40px; border: 1px solid color-mix(in srgb, var(--border) 40%, transparent); box-shadow: 0 12px 24px rgba(0,0,0,0.15), inset 0 0 0 1px rgba(255,255,255,0.1); display: block; } .web-mockup-img { border-radius: 12px; } /* Carousel Toggle UI */ .carousel-toggle { display: inline-flex; background: color-mix(in srgb, var(--bg-surface) 40%, transparent); padding: 4px; border-radius: var(--radius-pill); border: 1px solid color-mix(in srgb, var(--border) 60%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); margin-bottom: var(--space-4); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); } .toggle-btn { background: transparent; border: none; padding: 8px 24px; border-radius: var(--radius-pill); color: var(--text-secondary); font-family: var(--font-sans); font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all 0.3s ease; } .toggle-btn.active { background: var(--bg-surface); color: var(--accent); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); } .toggle-btn:hover:not(.active) { color: var(--text-primary); } /* Track Stacking and Crossfade */ .carousel-track-wrapper { position: relative; width: 100%; } .carousel-track { display: flex; gap: var(--space-6); padding: var(--space-8) 0; margin-top: var(--space-6); width: max-content; animation: marquee 40s linear infinite; will-change: transform; /* GPU-accelerated crossfade */ transition: opacity 0.4s ease, visibility 0.4s ease; } .carousel-mask:hover .carousel-track { animation-play-state: paused; } /* Default States (iOS active) */ .carousel-track.ios-track { position: relative; opacity: 1; visibility: visible; pointer-events: auto; } .carousel-track.web-track { position: absolute; top: 0; left: 0; opacity: 0; visibility: hidden; pointer-events: none; } /* Toggled States (Web active) */ .show-web .carousel-track.ios-track { position: absolute; top: 0; left: 0; opacity: 0; visibility: hidden; pointer-events: none; } .show-web .carousel-track.web-track { position: relative; opacity: 1; visibility: visible; pointer-events: auto; } /* Web slide dimensions */ .carousel-slide.web-slide { width: min(80vw, 540px); /* Web aspect width */ }