:root {
    --foreground: #000000;
    --background: #ffffff;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --separator: #e5e5e5;
    --hover-bg: #f5f5f5;
    --font-jetbrains-mono: 'JetBrains Mono', monospace;
}

.dark {
    --foreground: #ffffff;
    --background: #111111;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --separator: #2e2e2e;
    --hover-bg: #1f1f1f;
}

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

body {
    font-family: var(--font-jetbrains-mono);
    background-color: var(--background);
    color: var(--foreground);
    transition: background-color 0.3s ease, color 0.3s ease;
}

header {
    border-bottom: 1px solid var(--separator);
    position: sticky;
    top: 0;
    background-color: var(--background);
    z-index: 1000;
}

nav {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.nav-logo {
    color: var(--foreground);
    text-decoration: none;
    display: inline-block;
}

.nav-logo-container {
    display: block;
    text-align: center;
}

.nav-logo-main {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0;
}

.nav-logo-subtitle {
    display: block;
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--foreground);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1;
    margin-top: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
}

.nav-links a:hover {
    color: var(--foreground);
    background-color: var(--hover-bg);
}

.nav-sponsor {
    color: var(--foreground) !important;
    border: 1px solid var(--separator);
    padding: 0.5rem 1rem !important;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.nav-sponsor:hover {
    background-color: var(--hover-bg);
    border-color: var(--foreground);
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--separator);
    color: var(--foreground);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-family: var(--font-jetbrains-mono);
    font-size: 0.875rem;
    transition: all 0.2s ease;
    margin-left: auto;
}

.theme-toggle:hover {
    background-color: var(--hover-bg);
    border-color: var(--foreground);
}

.donate-button {
    background: #dc2626;
    border: 1px solid #dc2626;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-family: var(--font-jetbrains-mono);
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.donate-button:hover {
    background: #b91c1c;
    border-color: #b91c1c;
}

main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

h1::after {
    content: '|';
    animation: blink 1s infinite;
    margin-left: 0.1rem;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

/* Mobile responsive */
@media (max-width: 768px) {
    nav {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .nav-logo {
        flex: 1;
    }

    .nav-actions {
        margin-left: 0;
    }

    .theme-toggle {
        margin-left: 0;
    }

    .nav-links {
        width: 100%;
        gap: 0.5rem;
    }
}