/**
 * themes/ala/assets/css/layout.css
 * ÂLÂ Design System — Katman 4: Header, Mobil Menü, Footer
 *
 * NOT: Mobil menü açma/kapama JavaScript İLE DEĞİL, semantik <details>/<summary>
 * elementiyle yapılır — klavye ile doğal olarak çalışır, ekran okuyucu için
 * yerleşik durum bildirimi vardır, ve "gereksiz JavaScript ekleme" kuralına uyar.
 */

/* =========================================================
   HEADER (sticky — position:sticky, JS gerektirmez)
   ========================================================= */
.site-header{
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    display: flex;
    align-items: center;
    /* v1.1 kimlik güncellemesi: mavi zemin + beyaz yazı (talep edilen kurumsal kimlik) */
    background: var(--color-secondary);
    box-shadow: var(--shadow-md);
}
.site-header__inner{
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}
.site-header__logo{
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: var(--ls-heading);
    color: var(--color-text-on-dark);
    text-decoration: none;
    white-space: nowrap;
}
.site-header__logo:hover{ text-decoration: none; color: var(--color-gold); }
.site-header__logo-image{ max-height: 44px; width: auto; display: block; }

/* ---------- Masaüstü navigasyon ---------- */
.site-nav--desktop{ display: none; }
.site-nav__list{
    list-style: none;
    display: flex;
    gap: var(--space-8);
    margin: 0;
    padding: 0;
}
.site-nav__list a{
    color: var(--color-text-on-dark);
    font-size: var(--fs-caption);
    letter-spacing: var(--ls-caption);
    text-transform: uppercase;
    text-decoration: none;
    padding-block: var(--space-2);
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}
.site-nav__list a:hover,
.site-nav__list a[aria-current="page"]{
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
    text-decoration: none;
}

/* ---------- Mobil menü (details/summary — JS'siz) ---------- */
.mobile-menu{ display: block; }
.mobile-menu summary{
    list-style: none;
    cursor: pointer;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.3);
}
.mobile-menu summary::-webkit-details-marker{ display: none; }
.mobile-menu summary::before{
    content: "";
    display: block;
    width: 20px; height: 2px;
    background: var(--color-text-on-dark);
    box-shadow: 0 -6px 0 var(--color-text-on-dark), 0 6px 0 var(--color-text-on-dark);
}
.mobile-menu[open] summary::before{
    background: transparent;
    box-shadow: 0 0 0 var(--color-text-on-dark);
}
.mobile-menu__panel{
    position: absolute;
    left: 0; right: 0;
    top: var(--header-height);
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: var(--space-6) var(--container-padding);
}
.mobile-menu__panel .site-nav__list{
    flex-direction: column;
    gap: var(--space-4);
}
.mobile-menu__panel .site-nav__list a{
    display: block;
    font-size: var(--fs-body);
    text-transform: none;
    letter-spacing: normal;
    color: var(--color-text); /* panel zemini beyaz olduğu için koyu metin — header'daki beyaz metinden farklı */
}
.mobile-menu__panel .site-nav__list a:hover,
.mobile-menu__panel .site-nav__list a[aria-current="page"]{
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

@media (min-width: 768px){
    .site-nav--desktop{ display: block; }
    .mobile-menu{ display: none; }
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
    background: var(--color-secondary);
    color: rgba(255,255,255,0.85);
    padding-block: var(--space-16) var(--space-8);
}
.site-footer__grid{
    display: grid;
    gap: var(--space-10);
    grid-template-columns: 1fr;
    margin-bottom: var(--space-10);
}
.site-footer__brand{
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    color: var(--color-text-on-dark);
    margin-bottom: var(--space-3);
}
.site-footer__tagline{
    font-size: var(--fs-caption);
    color: rgba(255,255,255,0.7);
}
.site-footer__col h3{
    font-family: var(--font-body);
    font-size: var(--fs-caption);
    letter-spacing: var(--ls-caption);
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
    margin-bottom: var(--space-4);
}
.site-footer__list{
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.site-footer__list a{
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: var(--fs-body);
}
.site-footer__list a:hover{ color: var(--color-text-on-dark); text-decoration: underline; }
.site-footer__bottom{
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: var(--space-6);
    font-size: var(--fs-small);
    color: rgba(255,255,255,0.6);
    text-align: center;
}

@media (min-width: 768px){
    .site-footer__grid{ grid-template-columns: 2fr 1fr 1fr 1fr; }
}