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

body {
    overflow: hidden;
    background-color: #000;
    font-family: sans-serif;
    color: #fff;
}

/* Tri-Axis Context Layer */
.tri-axis-margin {
    position: fixed;
    z-index: 50;
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.tri-axis-margin span {
    color: rgba(255, 255, 255, 0.8);
}

#axis-bottom-left {
    bottom: max(24px, env(safe-area-inset-bottom));
    left: max(24px, env(safe-area-inset-left));
}

#axis-top-left {
    top: max(24px, env(safe-area-inset-top));
    left: max(24px, env(safe-area-inset-left));
}

#axis-periphery {
    top: 50%;
    right: max(24px, env(safe-area-inset-right));
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: center center;
}

/* Viewport */
#viewport {
    position: relative;
    width: 100vw;
    height: 100dvh;
    perspective: 1000px;
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform;
}

body.matrix-open #viewport {
    transform: scale(0.9) translate3d(0, 0, -200px);
}

.state-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    opacity: 0;
    pointer-events: none;
    transform: translate3d(0, 0, -100px) scale(0.95);
    transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform, opacity;
    background-size: cover;
    background-position: center;
}

#geo { background-image: linear-gradient(rgba(12, 21, 9, 0.75), rgba(12, 21, 9, 0.85)), url('assets/bg-geo.webp'); }
#bio { background-image: linear-gradient(rgba(12, 21, 9, 0.75), rgba(12, 21, 9, 0.85)), url('assets/bg-bio.webp'); }
#community { background-image: linear-gradient(rgba(12, 21, 9, 0.75), rgba(12, 21, 9, 0.85)), url('assets/bg-community.webp'); }
#method { background-image: linear-gradient(rgba(12, 21, 9, 0.75), rgba(12, 21, 9, 0.85)), url('assets/bg-method.webp'); }
#product { background-image: linear-gradient(rgba(12, 21, 9, 0.75), rgba(12, 21, 9, 0.85)), url('assets/bg-product.webp'); }

.state-container.active {
    opacity: 1;
    pointer-events: auto;
    transform: translate3d(0, 0, 0) scale(1);
    z-index: 10;
}

.state-container.previous {
    opacity: 0;
    pointer-events: none;
    transform: translate3d(0, 0, 100px) scale(1.05);
    z-index: 5;
}

/* Matrix Overlay */
#matrix-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    z-index: 9998;
    background: rgba(12, 21, 9, 0.85); /* Forest Deep */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

body.matrix-open #matrix-overlay {
    opacity: 1;
    pointer-events: auto;
}

#matrix-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    max-width: 800px;
    width: 100%;
}

#matrix-nav a {
    font-family: 'Cinzel', serif;
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
    padding: 10px;
}

#matrix-nav a:hover, #matrix-nav a.active {
    color: #fff;
    transform: scale(1.05);
}

#matrix-nav a.secondary-node {
    font-size: 1.2rem;
    flex-basis: 100%;
    text-align: center;
    margin-top: 2rem;
    font-family: 'DM Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Desktop layout constraint for secondary nodes */
@media (min-width: 768px) {
    #matrix-nav {
        position: relative;
        height: 60vh;
        width: 80vw;
        gap: 0;
        display: block;
    }
    #matrix-nav a {
        position: absolute;
        transform: translate(-50%, -50%);
    }
    /* Spatial Constellation Layout */
    #matrix-nav a[data-target="geo"] { top: 20%; left: 30%; }
    #matrix-nav a[data-target="bio"] { top: 30%; left: 70%; }
    #matrix-nav a[data-target="community"] { top: 50%; left: 50%; }
    #matrix-nav a[data-target="method"] { top: 70%; left: 30%; }
    #matrix-nav a[data-target="product"] { top: 80%; left: 70%; }
    
    #matrix-nav a[data-target="why"] { top: 90%; left: 35%; font-size: 1rem; }
    #matrix-nav a[data-target="contact"] { top: 90%; left: 65%; font-size: 1rem; }
    
    #matrix-nav a:hover, #matrix-nav a.active {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

/* Mobile Layout */
@media (max-width: 767px) {
    #matrix-nav {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    #matrix-nav a {
        font-family: 'Cinzel', serif;
        font-size: 2.5rem;
        /* Ensure tap targets are strictly > 44x44px */
        padding: 15px 20px;
        width: 100%;
        text-align: center;
        flex-basis: auto;
        margin-top: 0;
    }
    #matrix-nav a.secondary-node {
        font-size: 1.2rem;
        margin-top: 2rem;
    }
}

/* The Anchor */
#origin-mark {
    position: fixed;
    bottom: max(24px, env(safe-area-inset-bottom));
    right: max(24px, env(safe-area-inset-right));
    z-index: 9999;
    width: 48px;
    height: 48px;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), color 0.3s ease;
}

#origin-mark svg {
    width: 100%;
    height: 100%;
    display: block;
}

#origin-mark:hover {
    color: rgba(255, 255, 255, 1);
    transform: scale(1.1);
}

body.matrix-open #origin-mark {
    transform: rotate(45deg);
    color: rgba(255, 255, 255, 1);
}