:root {
    --bg-dark: #030303;
    --bg-card: rgba(20, 20, 20, 0.7);
    --accent: #00fff2;
    --accent-dim: rgba(0, 255, 242, 0.1);
    --accent-purple: #8a2be2;
    --text-main: #e0e0e0;
    --text-dim: #a0a0a0;
    --nav-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3 {
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* Navigation */
#main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    height: var(--nav-height);
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(3, 3, 3, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dim);
}

.nav-links a:hover {
    color: var(--accent);
}

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: visible;
    padding: 0 5%;
    text-align: center;
}

#particles-js {
    /* Fixed, full-viewport background animation that stays while scrolling */
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    opacity: 0.45;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #888 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 3rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1.2s ease;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1.4s ease;
}

.btn {
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
}

.btn.primary {
    background: var(--accent);
    color: #000;
}

.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 255, 242, 0.3);
}

.btn.secondary {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Common Section Styles */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 3;
    margin-bottom: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
    position: relative;
    z-index: 1;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.grid.inverse {
    direction: ltr;
}

/* ── Graphene 3D angled-sheet separators ── */
.graphene-separator {
    position: absolute;
    bottom: 0px;
    left: 0;
    right: 0;
    height: 520px;
    perspective: 800px;
    perspective-origin: center 50%;
    overflow: visible;
    z-index: 0;
    pointer-events: none;
}

.graphene-separator canvas {
    position: absolute;
    left: -25%;
    width: 150%;
    top: 50%;
    height: 700px;
    margin-top: -350px;
    transform: rotateX(70deg);
    transform-origin: center center;
}

/* Fade left/right edges only */
.graphene-separator::before {
    content: "";
    position: absolute;
    top: 0px;
    bottom: 0px;
    left: 0;
    right: 0;
    z-index: 1;
    pointer-events: none;
    background:
        linear-gradient(to right, var(--bg-dark) 0%, transparent 8%, transparent 92%, var(--bg-dark) 100%);
}

/* Soft glow reflection under the sheet */
.graphene-separator::after {
    display: none;
}

.product-section {
    background: var(--bg-dark);
    position: relative;
    overflow: visible;
}

.product-section.alt {
    background: #080808;
}

/* Per-section accent colors — text, badges, taglines, arrows, borders */
#messenger {
    --accent: #3b82f6;
    --accent-dim: rgba(59, 130, 246, 0.1);
}

#cloud {
    --accent: #a855f7;
    --accent-dim: rgba(168, 85, 247, 0.1);
}

#hardware {
    --accent: #00e5a0;
    --accent-dim: rgba(0, 229, 160, 0.1);
}

#about {
    --accent: #f97316;
    --accent-dim: rgba(249, 115, 22, 0.1);
}

/* Product Sections */
.product-badge {
    color: var(--accent);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.product-section h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.4rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.description {
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.feature-list {
    list-style: none;
    margin-bottom: 2.5rem;
}

.feature-list li {
    margin-bottom: 12px;
    padding-left: 28px;
    position: relative;
    color: var(--text-main);
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
}

.btn-product {
    padding: 12px 28px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    font-weight: 600;
}

.btn-product:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.link {
    font-size: 0.9rem;
    color: var(--text-dim);
    border-bottom: 1px solid transparent;
}

.link:hover {
    color: #fff;
    border-bottom-color: var(--accent);
}

.product-img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
    transition: transform 0.5s ease;
}

.blend-screen {
    mix-blend-mode: screen;
}

.image-wrapper {
    perspective: 1000px;
}

.image-wrapper:hover .product-img {
    transform: rotateY(-5deg) rotateX(2deg) scale(1.02);
}

.alt {
    background: #080808;
    z-index: 3;
}

/* Hardware Specific */
.highlight {
    background: #00e5a0 !important;
    color: #000 !important;
    border: none !important;
}

.primary-messenger {
    background: #3b82f6 !important;
    color: #000 !important;
    border: none !important;
}

.primary-cloud {
    background: #a855f7 !important;
    color: #fff !important;
    border: none !important;
}

.hardware-img {
    filter: drop-shadow(0 0 30px rgba(138, 43, 226, 0.2));
    width: 180%;
    max-width: 180%;
    margin-left: -45%;
}
.messenger-img {
    width: 55%;
    max-width: 55%;
    margin-left: 17.5%;
}
/* About / Philosophy */
.simple-bg {
    background: #000;
    text-align: center;
    position: relative;
    overflow: visible;
    z-index: 3;
}

.container.narrow {
    max-width: 800px;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 60px;
    text-align: left;
}

.phi-card {
    padding: 40px;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.phi-card h3 {
    margin-bottom: 1rem;
    color: var(--accent);
}

/* Footer */
footer {
    padding: 80px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-weight: 800;
    font-size: 1.2rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsiveness */
@media (max-width: 968px) {
    .grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .grid.inverse {
        display: flex;
        flex-direction: column-reverse;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
    }

    .product-section h2 {
        font-size: 2.2rem;
    }

    .graphene-separator canvas {
        height: 500px;
        margin-top: -250px;
    }

    /* Hide section separators on mobile — absolute positioning breaks tall single-column layouts */
    .section .graphene-separator {
        display: none;
    }

    /* Keep hero separator but make it smaller */
    #hero .graphene-separator {
        display: block;
        height: 320px;
    }
}