:root {
    --rg-bg: #0d1117;
    --rg-surface: #161b22;
    --rg-surface-raised: #1c2128;
    --rg-border: #30363d;
    --rg-text: #e6edf3;
    --rg-muted: #8b949e;
    --rg-accent: #58a6ff;
    --rg-accent-hover: #79c0ff;
}

html {
    position: relative;
    min-height: 100%;
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--rg-bg);
    color: var(--rg-text);
}

a {
    color: var(--rg-accent);
}

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

.site-header {
    border-bottom: 1px solid var(--rg-border);
    background: rgb(13 17 23 / 92%);
    backdrop-filter: blur(12px);
}

    .site-header .navbar {
        min-height: 64px;
    }

    .site-header .navbar-brand {
        color: var(--rg-text);
        font-size: 1.15rem;
        font-weight: 700;
        letter-spacing: -0.02em;
    }

        .site-header .navbar-brand:hover {
            color: #fff;
        }

    .site-header .nav-link {
        color: var(--rg-muted);
    }

        .site-header .nav-link:hover {
            color: var(--rg-text);
        }

main {
    min-height: calc(100vh - 140px);
}

.site-footer {
    margin-top: 4rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--rg-border);
    color: var(--rg-muted);
    font-size: 0.9rem;
}

    .site-footer .container-xl {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.4rem;
        text-align: center;
    }

    .site-footer-row {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.45rem;
    }

    .site-footer-note {
        font-size: 0.78rem;
        opacity: 0.75;
    }

    .site-footer-divider {
        margin: 0 0.25rem;
        opacity: 0.5;
    }

    .site-footer a {
        color: var(--rg-muted);
        text-decoration: none;
    }

        .site-footer a:hover {
            color: var(--rg-text);
        }

.btn-primary {
    --bs-btn-bg: #238636;
    --bs-btn-border-color: #2ea043;
    --bs-btn-hover-bg: #2ea043;
    --bs-btn-hover-border-color: #3fb950;
    --bs-btn-active-bg: #238636;
    --bs-btn-active-border-color: #3fb950;
}

.btn:focus-visible,
.nav-link:focus-visible,
.navbar-brand:focus-visible,
a:focus-visible {
    outline: 2px solid var(--rg-accent);
    outline-offset: 2px;
    box-shadow: none;
}

@media (max-width: 576px) {
    .site-footer .container-xl {
        flex-direction: column;
    }
}