:root {
    --bg: #0a0a0c; /* Slightly warmer dark background */
    --aluminum: linear-gradient(to bottom, #ffffff 0%, #e5e5e7 40%, #c8c8cc 50%, #d1d1d6 60%, #ffffff 100%);
    --warm-accent: #d4b585; /* Champagne gold hint */
    --glass: rgba(30, 30, 35, 0.4); /* Darker, warmer glass */
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg);
    color: #e5e5e7;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
    overflow-x: hidden;
    line-height: 1.5;
}

.hero { height: 100vh; position: relative; min-height: 800px; }

.canvas-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 5;
    pointer-events: none;
}

#aperture-canvas { max-width: 500px; width: 80%; opacity: 0.4; mix-blend-mode: screen; }

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
    z-index: 10;
    padding: 0 20px;
}

#title {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.02em; /* Tighter tracking for modern feel */
    text-transform: uppercase;
    background: linear-gradient(to bottom, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 30px rgba(255,255,255,0.15));
}

.tagline {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 600;
    color: #fff;
    margin-top: 30px;
    letter-spacing: -0.01em;
}

.sub-tagline {
    font-size: 1.1rem;
    color: #888;
    margin-top: 10px;
    font-weight: 400;
}

.features {
    padding: 10vh 5vw;
    z-index: 20;
    position: relative;
    background: linear-gradient(to bottom, transparent, #0a0a0c 20%);
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 24px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(40, 40, 45, 0.6);
    border-color: rgba(255, 255, 255, 0.2);
}

.card.full-width { grid-column: 1 / -1; }

.dual-advantage {
    margin: 2rem 0;
    padding: 1.5rem;
    border-left: 2px solid var(--glass-border);
    background: rgba(255,255,255,0.02);
    border-radius: 0 12px 12px 0;
}

.dual-advantage p { margin-bottom: 0.8rem !important; }

.glass h3 { 
    color: #fff; 
    margin-bottom: 0.8rem; 
    font-size: 1.5rem; 
    font-weight: 700;
    letter-spacing: -0.01em;
}

.glass p { 
    color: #a1a1a6; 
    line-height: 1.6; 
    font-size: 1.05rem; 
}

/* Perfect Button Centering */
.cta { 
    padding: 10vh 0 20vh; 
    position: relative; 
    z-index: 20; 
}

.cta-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.app-store-btn {
    background: #fff;
    color: #000;
    padding: 1.2rem 3.5rem;
    border-radius: 50px; /* Pill shape for modern app feel */
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(255,255,255,0.2);
}

.app-store-btn:hover { 
    transform: scale(1.05); 
    box-shadow: 0 0 40px rgba(255,255,255,0.4);
}

/* Background Beams */
#beams-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0; 
    pointer-events: none;
    opacity: 0.6;
}

#vault-wrapper {
    position: relative;
    z-index: 1;
}

/* Apple-style Squircle Mask & Effect */
.app-icon {
    width: 140px; /* Slightly larger */
    height: auto;
    margin: 0 auto 2rem;
    display: block;
    border-radius: 22.5%; /* Squircle */
    box-shadow: 
        0 0 0 1px rgba(255,255,255,0.1),
        0 20px 40px rgba(0,0,0,0.6),
        0 0 50px rgba(168, 85, 247, 0.25); /* Subtle purple glow */
    background-color: #000;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}

/* Film Grain Overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50; /* Top layer */
    opacity: 0.07;
    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='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}