:root {
    --color-bg: #000000;
    --color-text: #FFFFFF;
    --color-accent: #FF0000;
    --color-grid: #1A1A1A;

    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Roboto Mono', monospace;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --border-width: 1px;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
    border-left: 3px solid var(--color-accent);
    padding-left: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
    max-width: 70ch;
}

a {
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-grid);
    transition: all 0.2s ease;
}

a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-grid);
    margin-bottom: var(--spacing-lg);
}

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

.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    border: none;
}

.logo span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.hamburger {
    display: none;
    cursor: pointer;
    border: none;
    background: transparent;
    padding: 0.5rem;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
        z-index: 100;
        position: relative;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid var(--color-grid);
        transition: right 0.3s ease;
        z-index: 90;
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Utilities */
.text-accent {
    color: var(--color-accent);
}

.text-mono {
    font-family: var(--font-mono);
}

.uppercase {
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-text);
    background: transparent;
    color: var(--color-text);
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-text);
    /* Ensure contrast */
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-accent);
}

/* Footer */
footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-grid);
    font-size: 0.9rem;
    color: #888;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
    list-style: none;
}

.footer-links a {
    border: none;
    color: #888;
}

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