/* Global Navigation Bar – namespaced with gn- to avoid conflicts */
:root {
    --gn-bg: #ffffff;
    --gn-border: #e8e4ef;
    --gn-text: #222222;
    --gn-text-muted: #5a5568;
    --gn-accent: #c026d3;
    --gn-accent-bg: #faf5ff;
    --gn-shadow: 0 1px 3px rgba(0,0,0,0.06);
    --gn-radius: 6px;
    --gn-transition: 0.2s ease;
}
[data-theme="dark"] {
    --gn-bg: #1e1b2e;
    --gn-border: #3e3a52;
    --gn-text: #f3f0f9;
    --gn-text-muted: #a8a2b8;
    --gn-accent: #e879f9;
    --gn-accent-bg: rgba(126,34,106,0.2);
    --gn-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.gn-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    height: 52px;
    background: var(--gn-bg);
    border-bottom: 1px solid var(--gn-border);
    box-shadow: var(--gn-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--gn-transition), border-color var(--gn-transition);
}

.gn-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--gn-text);
    flex-shrink: 0;
}
.gn-logo:hover { opacity: 0.85; }
.gn-logo img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}
.gn-logo-text {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--gn-text);
    white-space: nowrap;
}
.gn-logo-sub {
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--gn-text-muted);
    margin-left: 0.35rem;
}

.gn-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.gn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gn-text-muted);
    text-decoration: none;
    border-radius: var(--gn-radius);
    transition: color var(--gn-transition), background-color var(--gn-transition);
    white-space: nowrap;
}
.gn-link:hover {
    color: var(--gn-accent);
    background: var(--gn-accent-bg);
}
.gn-link:focus-visible {
    outline: 2px solid var(--gn-accent);
    outline-offset: 2px;
}
.gn-link.gn-active {
    color: var(--gn-accent);
    background: var(--gn-accent-bg);
    font-weight: 600;
}

.gn-link svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Mobile hamburger */
.gn-toggle {
    display: none;
    background: none;
    border: 1px solid var(--gn-border);
    border-radius: var(--gn-radius);
    padding: 0.4rem;
    cursor: pointer;
    color: var(--gn-text);
    line-height: 0;
}
.gn-toggle svg { width: 20px; height: 20px; }

@media (max-width: 768px) {
    .gn-bar {
        flex-wrap: wrap;
        height: auto;
        padding: 0.6rem 1rem;
        gap: 0;
    }
    .gn-bar > .gn-logo { flex: 1; }
    .gn-toggle { display: flex; align-items: center; justify-content: center; }
    .gn-links {
        display: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0.15rem;
        padding-top: 0.5rem;
        border-top: 1px solid var(--gn-border);
        margin-top: 0.5rem;
    }
    .gn-links.gn-open { display: flex; }
    .gn-link {
        padding: 0.6rem 0.75rem;
        border-radius: var(--gn-radius);
    }
    .gn-logo-sub { display: none; }
}

/* Theme toggle button in gn-bar */
.gn-theme-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gn-border);
    border-radius: var(--gn-radius);
    background: var(--gn-bg);
    color: var(--gn-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
    transition: background-color var(--gn-transition), border-color var(--gn-transition);
}
.gn-theme-toggle:hover { background: var(--gn-accent-bg); border-color: var(--gn-accent); }
.gn-theme-toggle:focus-visible { outline: 2px solid var(--gn-accent); outline-offset: 2px; }
.gn-theme-toggle .theme-icon-moon { display: none; }
[data-theme="dark"] .gn-theme-toggle .theme-icon-sun { display: none; }
[data-theme="dark"] .gn-theme-toggle .theme-icon-moon { display: inline; }

/* ── Global Footer ──────────────────────────────────────── */
.landing-footer {
    background: var(--gn-bg, #ffffff);
    padding: 1.25rem 1.5rem;
    margin-top: 2rem;
    border-top: 1px solid var(--gn-border, #e8e4ef);
}
.landing-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 1.25rem;
    font-size: 0.875rem;
    justify-content: center;
    flex-wrap: wrap;
}
.landing-footer-inner a {
    color: var(--gn-text-muted, #5a5568);
    text-decoration: none;
    transition: color 0.15s ease;
}
.landing-footer-inner a:hover {
    color: var(--gn-accent, #c026d3);
}