@font-face {
    font-family: 'Aeonik Fono';
    src: url('fonts/AeonikFono-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Aeonik Fono';
    src: url('fonts/AeonikFono-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --bg: #080D2B;
    --text: #E8E8E8;
    --accent: #0F3BFE;
    --muted: #A0A0A0;
    --divider: #2A2A2A;
    --font: 'Aeonik Fono', 'Courier New', monospace;
    --max-width: 680px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent);
    color: #fff;
}

body {
    font-family: var(--font);
    color: var(--text);
    background-color: var(--bg);
    background-image: radial-gradient(circle, rgba(15, 59, 254, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
    line-height: 1.8;
    font-weight: 400;
}

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 2px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 8rem 0;
}

section + section {
    border-top: 1px solid var(--divider);
}

h1 {
    font-size: 5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

h2 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    margin-bottom: 2rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1rem;
    color: var(--muted);
    line-height: 1.8;
}

#hero {
    position: relative;
    padding: 6rem 0 4rem;
    text-align: center;
}

nav {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--max-width);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
}

@keyframes os-cycle {
    0%      { content: '<os/>'; }
    11.1%   { content: '{os}'; }
    22.2%   { content: '[os]'; }
    33.3%   { content: '> os'; }
    44.4%   { content: 'os_'; }
    55.5%   { content: 'os::'; }
    66.6%   { content: 'os++'; }
    77.7%   { content: '(os)'; }
    88.8%   { content: 'os;'; }
    100%    { content: '<os/>'; }
}

.logo {
    font-weight: 700;
    cursor: default;
}

.logo::before {
    content: '<os/>';
    color: var(--accent);
    animation: os-cycle 5.4s steps(1) infinite;
}

.logo:hover::before {
    animation-play-state: paused;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.85rem;
    color: var(--muted);
    transition: color 0.2s;
}

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

.tagline {
    margin-top: 1.5rem;
    font-size: 1.1rem;
    color: var(--muted);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

#hero h1::after {
    content: '_';
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

#about p {
    max-width: 520px;
}

.brands-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.brand-card {
    transition: opacity 0.2s;
}

.brand-card:hover {
    opacity: 0.5;
}

.brand-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.brand-card h3 a:hover {
    text-decoration: underline;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.contact-links a {
    font-size: 1rem;
    color: var(--text);
    text-decoration: none;
    width: fit-content;
    padding: 0.15rem 0.25rem;
    margin-left: -0.25rem;
    transition: background 0.15s, color 0.15s;
}

.contact-links a::before {
    content: '$ ';
    color: var(--accent);
}

.contact-links a:hover {
    background: var(--accent);
    color: #fff;
}

.copyright {
    font-size: 0.75rem;
    color: var(--muted);
}

@media (max-width: 600px) {
    #hero {
        padding: 4rem 0 3rem;
    }

    nav {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    h1 {
        font-size: 2.75rem;
    }

    .tagline {
        font-size: 0.95rem;
    }

    section {
        padding: 4rem 0;
    }

    .brands-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}