/* Shared, scoped navigation. Page-specific card and heading styles stay intact. */
.site-navigation {
    --nav-surface: #FFFFFF;
    --nav-ink: #5D4E4E;
    --nav-border: #E4D4D7;
    --nav-accent: #9C3552;
    --nav-hover: #FFF4F7;
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto 24px;
    padding: 0;
    color: var(--nav-ink);
    font-family: var(--font-main, 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif);
    font-size: 1rem;
    line-height: 1.5;
    text-align: left;
}

.site-navigation--home { margin-bottom: 15px; }

.site-navigation .site-nav-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin: 0 0 9px;
    padding: 0;
}

.site-navigation .site-nav-link {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-width: 0;
    min-height: 50px;
    margin: 0;
    padding: 10px 12px;
    border: 1px solid var(--nav-border);
    border-radius: 12px;
    background: var(--nav-surface);
    color: var(--nav-ink);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 750;
    line-height: 1.4;
    text-align: center;
    text-decoration: none;
    white-space: normal;
    overflow-wrap: anywhere;
    box-shadow: none;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.site-navigation .site-nav-icon {
    flex-shrink: 0;
    font-size: 0.95em;
}

.site-navigation .site-nav-link:hover {
    border-color: var(--nav-accent);
    background: var(--nav-hover);
    color: var(--nav-ink);
    transform: none;
}

.site-navigation .site-nav-link--temperament { --nav-button-color: #9C3552; }
.site-navigation .site-nav-link--mbti { --nav-button-color: #6950A1; }
.site-navigation .site-nav-link--parent { --nav-button-color: #9A4C32; }
.site-navigation .site-nav-link--medical { --nav-button-color: #2F6D55; }

.site-navigation .site-nav-link[class*="site-nav-link--"] {
    border-color: transparent;
    background: var(--nav-button-color);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 3px 10px rgba(65, 45, 50, 0.1);
}

.site-navigation .site-nav-link[class*="site-nav-link--"]:hover {
    border-color: #FFFFFF;
    box-shadow: 0 0 0 1px var(--nav-button-color);
}

.site-navigation .site-nav-link.is-current {
    border-color: #FFFFFF;
    background: var(--nav-button-color, var(--nav-accent));
    color: #FFFFFF;
    box-shadow: 0 0 0 2px var(--nav-button-color, var(--nav-accent));
}

.site-navigation .site-nav-check {
    position: absolute;
    top: 1px;
    right: 4px;
    font-size: 0.875rem;
    font-weight: 800;
    line-height: 1;
}

.site-navigation .site-nav-more {
    display: block;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.site-navigation .site-nav-more > summary {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 44px;
    margin: 0;
    padding: 9px 12px;
    border: 1px solid var(--nav-border);
    border-radius: 12px;
    background: var(--nav-surface);
    color: var(--nav-ink);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 750;
    line-height: 1.5;
    text-align: center;
    list-style: none;
    cursor: pointer;
}

.site-navigation .site-nav-more > summary::-webkit-details-marker { display: none; }

.site-navigation .site-nav-current-label {
    padding: 1px 7px;
    border: 1px solid var(--nav-border);
    border-radius: 6px;
    font-size: 0.875rem;
}

.site-navigation .site-nav-chevron {
    display: inline-block;
    font-size: 1rem;
    line-height: 1;
    transition: transform 0.15s ease;
}

.site-navigation .site-nav-more[open] .site-nav-chevron { transform: rotate(180deg); }

.site-navigation .site-nav-grid--all {
    margin: 9px 0 0;
    padding: 10px;
    border: 1px solid var(--nav-border);
    border-radius: 14px;
    background: var(--nav-surface);
}

.site-navigation .site-nav-link:focus-visible,
.site-navigation .site-nav-more > summary:focus-visible,
.site-navigation .site-nav-skip:focus-visible {
    outline: 3px solid #1D4ED8;
    outline-offset: 3px;
}

.site-navigation .site-nav-sr-only,
.site-navigation .site-nav-skip:not(:focus) {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.site-navigation .site-nav-skip:focus {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 5;
    padding: 10px 14px;
    border-radius: 8px;
    background: var(--nav-accent);
    color: #FFFFFF;
    font-size: 1rem;
    text-decoration: none;
}

#site-nav-content { scroll-margin-top: 12px; }

[data-theme="dark"] .site-navigation {
    --nav-surface: #352C2C;
    --nav-ink: #F8ECEC;
    --nav-border: #795B65;
    --nav-hover: #49363B;
}

[data-theme="dark"] .site-navigation .site-nav-link:focus-visible,
[data-theme="dark"] .site-navigation .site-nav-more > summary:focus-visible { outline-color: #93C5FD; }

@media (max-width: 640px) {
    .site-navigation .site-nav-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
    .site-navigation .site-nav-link,
    .site-navigation .site-nav-chevron { transition: none; }
}