/* ═══════════════════════════════════════════════════════════════════════
   CELIK — layout.css · REDESIGN v2 (AÇIK TEMA)
   Temel tipografi, .container, .section, .header (beyaz sticky),
   .drawer (açık), .footer (koyu grafit), .skip-link, grid yardımcıları.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Temel ───────────────────────────────────────────────────────────── */

html,
body {
  overflow-x: clip;               /* yatay taşma yasak */
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--fw-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1, h2, h3, h4 {
  font-weight: var(--fw-extrabold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-graphite);
}

h1 { font-size: var(--text-h1); line-height: var(--leading-tight); }
h2 { font-size: var(--text-h2); line-height: 1.12; }
h3 { font-size: var(--text-h3); }

p {
  color: var(--color-text-muted);
}

::selection {
  background-color: var(--color-gold);
  color: var(--color-graphite);
}

:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Drawer / lightbox açıkken gövde kilidi (JS body'ye sınıf ekler) */
body.is-locked,
body.no-scroll,
body.drawer-open {
  overflow: hidden;
}

/* ── Konteyner ve section ────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: calc(var(--container-max) + var(--container-pad) * 2);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-9);
  background-color: var(--color-bg);
}

/* Alternatif açık gri zemin — ardışık bölümlerde ritim için (R0) */
.section--alt {
  background-color: var(--color-bg-alt);
  border-block: 1px solid var(--color-line-soft);
}

/* ── Grid yardımcıları ───────────────────────────────────────────────── */

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ── Skip link ───────────────────────────────────────────────────────── */

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: calc(var(--z-lightbox) + 1);
  padding: var(--space-3) var(--space-5);
  background-color: var(--color-gold);
  color: var(--color-graphite);
  font-weight: var(--fw-extrabold);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ── Header — BEYAZ sticky, blur'lu, alt 1px çizgi (R0) ──────────────── */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line-soft);
  transition: box-shadow var(--transition), border-color var(--transition);
}

/* navigation.js scroll'da ekler */
.header.is-scrolled,
.header[data-scrolled] {
  border-bottom-color: var(--color-line);
  box-shadow: var(--shadow-header);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  height: 40px;
  width: auto;
}

/* Grafit nav metni, aktif link altın alt çizgi (R0) */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__link {
  position: relative;
  padding-block: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background-color: var(--color-gold);
  transition: right var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-graphite);
}

.nav__link:hover::after {
  right: 0;
}

.nav__link[aria-current="page"] {
  color: var(--color-graphite);
}

.nav__link[aria-current="page"]::after {
  right: 0;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* ── Mobil çekmece — AÇIK tema (beyaz zemin) ─────────────────────────── */

.drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background-color: rgba(255, 255, 255, 0.97);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition),
              visibility 0s linear var(--transition);
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--transition), transform var(--transition);
}

.drawer > .container {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding-block: var(--space-4) var(--space-7);
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  border-bottom: 1px solid var(--color-line);
}

.drawer__nav {
  display: flex;
  flex-direction: column;
  padding-block: var(--space-5);
  flex-grow: 1;
}

.drawer__link {
  padding-block: var(--space-4);
  font-size: var(--text-md);
  font-weight: var(--fw-medium);
  color: var(--color-graphite);
  border-bottom: 1px solid var(--color-line-soft);
  transition: color var(--transition-fast);
}

.drawer__link:hover,
.drawer__link:focus-visible {
  color: var(--color-gold);
}

.drawer__link[aria-current="page"] {
  color: var(--color-gold);
}

.drawer__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line);
}

/* ── Footer — KOYU GRAFİT blok (R0) ──────────────────────────────────── */

.footer {
  background-color: var(--color-graphite);
  padding-block: var(--space-8) var(--space-6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.1fr;
  gap: var(--space-8);
}

.footer__brand .logo img {
  height: 44px;
}

.footer__about {
  margin-top: var(--space-5);
  max-width: 320px;
  font-size: var(--text-sm);
  color: var(--color-inv-muted);
}

.footer__title {
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-inv-faint);
  margin-bottom: var(--space-5);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__list a {
  font-size: var(--text-sm);
  color: var(--color-inv-muted);
  width: fit-content;
  transition: color var(--transition-fast);
}

.footer__list a:hover,
.footer__list a:focus-visible {
  color: var(--color-gold-soft);
}

.footer__pending {
  font-size: var(--text-sm);
  color: var(--color-inv-muted);
  white-space: pre-line;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-inv-line-soft);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-inv-faint);
}

.footer__legal {
  display: flex;
  gap: var(--space-5);
}

.footer__legal a {
  font-size: var(--text-xs);
  color: var(--color-inv-faint);
  transition: color var(--transition-fast);
}

.footer__legal a:hover,
.footer__legal a:focus-visible {
  color: var(--color-gold-soft);
}