/*
 * layout.css
 * ------------------------------------------------------------
 * 헤더, 네비게이션, 메인 영역, 푸터 등 사이트 골격을 담당합니다.
 */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.header-inner {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 13px;
    background: var(--color-primary);
    color: #fff;
    font-weight: 800;
}

.brand strong {
    display: block;
    font-size: 1.12rem;
    line-height: 1.25;
}

.brand small {
    display: block;
    margin-top: 2px;
    color: var(--color-muted);
    font-size: .75rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.main-nav a {
    padding: 10px 12px;
    border-radius: 9px;
    font-size: .9rem;
    font-weight: 650;
}

.main-nav a:hover,
.main-nav a:focus-visible {
    background: #eef4ff;
    color: var(--color-primary-dark);
}

.menu-toggle {
    display: none;
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 9px;
    padding: 9px 13px;
    cursor: pointer;
}

main { min-height: 60vh; }

.site-footer {
    margin-top: 30px;
    padding: 48px 0;
    background: #1f2937;
    color: #e8edf3;
}

.footer-brand {
    font-size: 1.2rem;
    font-weight: 800;
}

.site-footer p {
    margin: 8px 0;
    color: #c7d0dc;
}

.footer-note {
    max-width: 800px;
    font-size: .85rem;
}

.copyright {
    margin-top: 24px !important;
    font-size: .78rem;
}

@media (max-width: 960px) {
    .menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 78px;
        left: 0;
        right: 0;
        padding: 10px 14px 18px;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow);
        flex-direction: column;
        align-items: stretch;
    }

    .main-nav.is-open { display: flex; }

    .main-nav a {
        padding: 13px 14px;
        font-size: 1rem;
    }
}

/* 현재 페이지의 주요 메뉴를 일관된 방식으로 강조합니다. */
.main-nav a.is-active {
    background: #eef4ff;
    color: var(--color-primary-dark);
    box-shadow: inset 0 0 0 1px #cbd8eb;
}

.main-nav a.is-active:hover,
.main-nav a.is-active:focus-visible {
    background: #e6efff;
    color: var(--color-primary-dark);
}