/* ==========================================================================
   LAYOUT — container, section, grid ve site iskeleti (header / nav / footer)
   ========================================================================== */

/* ---- Container ---- */
.container {
    width: 100%;
    max-width: calc(var(--container) + var(--gutter) * 2);
    margin-inline: auto;
    padding-inline: var(--gutter);
}
.container--narrow { max-width: calc(var(--container-narrow) + var(--gutter) * 2); }
.container--wide   { max-width: calc(var(--container-wide) + var(--gutter) * 2); }

/* ---- Section ----
   .section            : standart dikey boşluk
   .section--tight     : daha az boşluk
   .section--alt       : açık gri zemin
   .section--soft      : yumuşak degrade zemin
   .section--brand     : marka degrade, beyaz yazı
   .section--image     : arka plan görseli + koyu perde (style="--bg-image:url(...)")
*/
.section { padding-block: var(--section-y); }
.section--tight { padding-block: calc(var(--section-y) * .55); }
.section--flush-top { padding-top: 0; }
.section--alt   { background: var(--c-surface-alt); }
.section--white { background: var(--c-surface); }
.section--soft  { background: var(--g-soft); }
.section--brand { background: var(--g-hero); color: var(--c-white); }
.section--image {
    position: relative;
    color: var(--c-white);
    background: var(--c-primary-dark) var(--bg-image, none) center / cover no-repeat;
    isolation: isolate;
}
.section--image::before {
    content: ""; position: absolute; inset: 0; z-index: -1;
    background: var(--overlay, rgba(6, 22, 38, .72));
}
.section--brand :is(h1, h2, h3, h4, a:not(.btn)),
.section--image :is(h1, h2, h3, h4, a:not(.btn)) { color: inherit; }

/* ---- Grid ----
   .grid                : otomatik sütun (min genişlik --min, varsayılan 260px)
   .grid--2/3/4/5       : sabit sütun, küçük ekranlarda otomatik azalır
   style="--min:200px"  : CSS yazmadan kart genişliği ayarlama
*/
.grid {
    display: grid;
    gap: var(--gap, var(--space-5));
    grid-template-columns: repeat(auto-fill, minmax(min(100%, var(--min, 260px)), 1fr));
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid--center { justify-content: center; }
.grid--middle { align-items: center; }
@media (max-width: 1024px) { .grid--4, .grid--5 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 860px)  { .grid--3, .grid--4, .grid--5 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px)  { .grid--2, .grid--3, .grid--4, .grid--5 { grid-template-columns: 1fr; } }

/* Esnek yerleşimler */
.split   { display: grid; gap: var(--space-7); grid-template-columns: 1fr 1fr; align-items: center; }
.split--wide-left  { grid-template-columns: 3fr 2fr; }
.split--wide-right { grid-template-columns: 2fr 3fr; }
.split--top { align-items: start; }
@media (max-width: 860px) { .split, .split--wide-left, .split--wide-right { grid-template-columns: 1fr; gap: var(--space-6); } }

.stack   { display: flex; flex-direction: column; gap: var(--gap, var(--space-4)); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--gap, var(--space-4)); }
.cluster--center  { justify-content: center; }
.cluster--between { justify-content: space-between; }

/* ==========================================================================
   SITE HEADER
   ========================================================================== */
.site-topbar { background: var(--g-topbar); color: var(--c-white); font-size: var(--fs-xs); }
.site-topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); min-height: 34px; }
.site-topbar__info { opacity: .9; }
.site-topbar__info .fa-solid { margin-right: 2px; }

.site-banner {
    position: relative;
    color: var(--c-white);
    background: var(--c-primary-dark) var(--banner-image, var(--g-hero)) center / cover no-repeat;
    isolation: isolate;
}
.site-banner::before { content: ""; position: absolute; inset: 0; z-index: -1; background: rgba(0, 0, 0, .44); }
.site-banner__inner {
    display: flex; align-items: center; justify-content: space-between; gap: var(--space-6);
    min-height: 172px; padding-block: var(--space-5);
}
.site-logo { display: inline-flex; align-items: center; color: var(--c-white); text-decoration: none; }
.site-logo { flex-shrink: 1; min-width: 0; }
.site-logo img { width: clamp(260px, 38vw, 540px); height: auto; } /* SVG logolar için genişlik zorunlu */
.site-logo__text { display: flex; flex-direction: column; line-height: 1.05; }
.site-logo__text strong { font-size: clamp(2.2rem, 1.5rem + 2.6vw, 3.2rem); letter-spacing: .04em; }
.site-logo__text small { max-width: 300px; font-size: var(--fs-xs); opacity: .9; line-height: 1.3; margin-top: var(--space-1); }
.site-logo:hover { color: var(--c-white); }

.site-banner__event {
    display: flex; flex-direction: column; align-items: flex-start;
    padding-left: var(--space-6); border-left: 2px solid rgba(255, 255, 255, .7);
    font-family: var(--font-display); font-weight: 700; line-height: 1.15;
}
.site-banner__dates { font-size: clamp(1.4rem, 1rem + 1.4vw, 2rem); letter-spacing: .04em; }
.site-banner__place { font-size: var(--fs-lg); letter-spacing: .06em; }
.site-banner__theme { margin-top: var(--space-2); font-size: var(--fs-lg); font-style: italic; color: var(--c-highlight); }

@media (max-width: 860px) {
    .site-banner__inner { flex-direction: column; justify-content: center; text-align: center; min-height: 0; gap: var(--space-4); }
    .site-banner__event { align-items: center; padding-left: 0; border-left: 0; }
    .site-topbar__info { display: none; }
    .site-topbar__inner { justify-content: flex-end; }
}

/* ---- Navigation ---- */
.site-nav { position: sticky; top: 0; z-index: 50; background: var(--g-nav); box-shadow: var(--shadow); }
.site-nav__inner { position: relative; }
.site-nav__menu { display: flex; flex-wrap: wrap; align-items: stretch; margin: 0; padding: 0; list-style: none; }
.site-nav__item { position: relative; }
.site-nav__link {
    display: flex; align-items: center; gap: 6px; height: 100%;
    padding: 15px 12px;
    background: none; border: 0;
    font-family: var(--font-display); font-size: var(--fs-base); font-weight: 700; letter-spacing: .02em;
    text-transform: uppercase; text-decoration: none; color: #e1e8ed;
    transition: color var(--t-fast), background var(--t-fast);
}
.site-nav__link:hover, .site-nav__item.is-active > .site-nav__link { color: var(--c-white); background: rgba(255, 255, 255, .12); }
.site-nav__item.is-active > .site-nav__link { box-shadow: inset 0 -3px 0 var(--c-white); }
.site-nav__caret { font-size: .65em; transition: transform var(--t-fast); }

.site-nav__submenu {
    position: absolute; top: 100%; left: 0; min-width: 260px; z-index: 60;
    margin: 0; padding: var(--space-2) 0; list-style: none;
    background: var(--c-surface); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow-lg);
    opacity: 0; visibility: hidden; transform: translateY(6px); transition: var(--t);
}
.site-nav__submenu a {
    display: block; padding: 10px 18px;
    color: var(--c-text); text-decoration: none; font-size: var(--fs-sm);
}
.site-nav__submenu a:hover, .site-nav__submenu .is-active a { background: var(--c-surface-alt); color: var(--c-primary); }
.site-nav__submenu .is-active a { font-weight: 700; }

@media (min-width: 1101px) {
    .has-children:hover > .site-nav__submenu,
    .has-children:focus-within > .site-nav__submenu,
    .has-children.is-open > .site-nav__submenu { opacity: 1; visibility: visible; transform: none; }
    .has-children:hover .site-nav__caret { transform: rotate(180deg); }
}

.site-nav__toggle {
    display: none; align-items: center; gap: var(--space-2);
    padding: 14px 0; background: none; border: 0; color: var(--c-white);
    font-family: var(--font-display); font-size: var(--fs-md); font-weight: 700; text-transform: uppercase;
}

@media (max-width: 1100px) {
    .site-nav__toggle { display: flex; }
    .site-nav__menu {
        display: none; flex-direction: column;
        padding-bottom: var(--space-3);
        max-height: calc(100vh - 60px); overflow-y: auto;
    }
    .site-nav.is-open .site-nav__menu { display: flex; }
    .site-nav__link { width: 100%; justify-content: space-between; padding: 12px 4px; border-top: 1px solid rgba(255, 255, 255, .12); }
    .site-nav__submenu {
        position: static; display: none; min-width: 0;
        opacity: 1; visibility: visible; transform: none;
        background: rgba(255, 255, 255, .08); box-shadow: none; border-radius: var(--radius-sm);
    }
    .site-nav__submenu a { color: var(--c-white); }
    .site-nav__submenu a:hover, .site-nav__submenu .is-active a { background: rgba(255, 255, 255, .12); color: var(--c-white); }
    .has-children.is-open > .site-nav__submenu { display: block; }
    .has-children.is-open .site-nav__caret { transform: rotate(180deg); }
}

/* ==========================================================================
   SITE FOOTER
   ========================================================================== */
.site-footer { background: #0c2033; color: rgba(255, 255, 255, .78); font-size: var(--fs-sm); }
.site-footer a { color: var(--c-white); text-decoration: none; }
.site-footer a:hover { color: var(--c-secondary); }
.site-footer__grid {
    display: grid; gap: var(--space-6);
    grid-template-columns: 1.4fr 1fr 1.2fr;
    padding-block: var(--space-8) var(--space-7);
}
.site-footer__brand { font-family: var(--font-display); font-size: var(--fs-xl); font-weight: 700; color: var(--c-white); margin-bottom: var(--space-2); }
.site-footer__title { font-family: var(--font-display); font-size: var(--fs-md); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--c-white); }
.site-footer__meta .fa-solid { width: 18px; color: var(--c-secondary); }
.site-footer__links { list-style: none; padding: 0; }
.site-footer__links li { margin-bottom: var(--space-2); }
.site-footer__bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding-block: var(--space-4); font-size: var(--fs-xs); text-align: center; }
@media (max-width: 860px) { .site-footer__grid { grid-template-columns: 1fr; } }