:root {
    --color-bg: #0f0f0f;
    --color-surface: #1c1c1c;
    --color-text: #f1f1f1;
    --color-muted: #aaaaaa;
    --color-accent: #ff0000;
    --color-border: #303030;
    --header-height: 64px;
    --footer-height: 56px;
    --max-width: 1200px;
}

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

html, body {
    height: 100%;
}

body {
    font-family: 'Noto Sans KR', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    display: grid;
    grid-template-rows: var(--header-height) 1fr auto;
    min-height: 100vh;
}

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

.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 7px;
    display: block;
}

.site-nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.95rem;
    color: var(--color-muted);
    transition: background-color 0.15s, color 0.15s;
}

.nav-link:hover {
    background-color: #2a2a2a;
    color: var(--color-text);
}

.nav-link.active {
    background-color: var(--color-text);
    color: var(--color-bg);
    font-weight: 600;
}

.site-body {
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: 32px 24px;
}

.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.875rem;
}

@media (max-width: 640px) {
    .nav-link {
        padding: 6px 10px;
        font-size: 0.85rem;
    }

    .logo-text {
        display: none;
    }
}