:root {
    --bg-deep: #0a0f1c;
    --bg-mid: #151e2e;
    --bg-light: #1e293b;
    --text-main: #FFFFFF;
    --accent-cyan: #29e2cc;
    --border-ui: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.6;
}

.font-serif-italic {
    font-family: 'Playfair Display', serif;
    font-style: italic;
}

.border-gs {
    border-color: var(--border-ui);
}

.nav-link {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 600;
    color: #94a3b8;
    transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
}

.hero-title {
    font-size: clamp(3rem, 10vw, 8rem);
    line-height: 0.8;
    font-weight: 800;
    letter-spacing: -0.06em;
    color: var(--text-main);
}

.section-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--accent-cyan);
    margin-bottom: 2rem;
    display: block;
    font-weight: 700;
}

.gs-grid-container {
    border-top: 1px solid var(--border-ui);
    border-left: 1px solid var(--border-ui);
}

.gs-grid-item {
    border-right: 1px solid var(--border-ui);
    border-bottom: 1px solid var(--border-ui);
    transition: all 0.4s ease;
}

.gs-grid-item:hover {
    background: rgba(41, 226, 204, 0.02);
}

.btn-gs-primary {
    background: var(--accent-cyan);
    color: var(--bg-deep);
    padding: 1rem 2rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    transition: all 0.2s ease;
    display: inline-block;
}

.lineage-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    border: 1px solid var(--border-ui);
    margin-bottom: 2rem;
    color: #64748b;
}

/* Custom additions for specific pages */
.highlight-text {
    color: var(--accent-cyan);
}

.btn-gs-secondary {
    border: 1.5px solid var(--accent-cyan);
    color: var(--accent-cyan);
    padding: 1.25rem 2.5rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    transition: all 0.2s ease;
    display: inline-block;
}

.btn-gs-secondary:hover {
    background: rgba(41, 226, 204, 0.1);
    transform: translateY(-2px);
}

.content-tag {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
    padding: 2px 8px;
    display: inline-block;
    margin-bottom: 1rem;
}

/* Siosism & Silica Aesthetics */
.hexagon {
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
    background: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
}

.bg-crystalline {
    background-image: linear-gradient(30deg, #0a0f1c 12%, transparent 12.5%, transparent 87%, #0a0f1c 87.5%, #0a0f1c),
        linear-gradient(150deg, #0a0f1c 12%, transparent 12.5%, transparent 87%, #0a0f1c 87.5%, #0a0f1c),
        linear-gradient(30deg, #0a0f1c 12%, transparent 12.5%, transparent 87%, #0a0f1c 87.5%, #0a0f1c),
        linear-gradient(150deg, #0a0f1c 12%, transparent 12.5%, transparent 87%, #0a0f1c 87.5%, #0a0f1c),
        linear-gradient(60deg, rgba(41, 226, 204, 0.05) 25%, transparent 25.5%, transparent 75%, rgba(41, 226, 204, 0.05) 75%, rgba(41, 226, 204, 0.05)),
        linear-gradient(60deg, rgba(41, 226, 204, 0.05) 25%, transparent 25.5%, transparent 75%, rgba(41, 226, 204, 0.05) 75%, rgba(41, 226, 204, 0.05));
    background-size: 40px 70px;
    background-position: 0 0, 0 0, 20px 35px, 20px 35px, 0 0, 20px 35px;
}

/* Mobile & Responsive Utilities */
.section-padding {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

@media (min-width: 768px) {
    .section-padding {
        padding-top: 8rem;
        padding-bottom: 8rem;
    }
}

.mobile-nav-active {
    overflow: hidden;
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.75rem;
        line-height: 1;
    }

    .section-label {
        font-size: 0.6rem;
        letter-spacing: 0.25em;
        margin-bottom: 1.5rem;
    }
}

.silica-border {
    border: 1px solid rgba(41, 226, 204, 0.2);
    position: relative;
    overflow: hidden;
}

.silica-border::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transform: rotate(45deg);
    animation: crystalline-shimmer 10s infinite linear;
}

@keyframes crystalline-shimmer {
    0% {
        transform: rotate(45deg) translateX(-100%);
    }

    100% {
        transform: rotate(45deg) translateX(100%);
    }
}