/* ==========================================================================
   Components — header, mega menu, hero, kartlar, butonlar, footer
   ========================================================================== */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  padding: 16px 24px;
  font: 700 0.9375rem/1 var(--font-sans);
  border-radius: var(--radius-button);
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
}

.btn svg { width: 18px; height: 18px; flex: none; transition: transform var(--dur-fast) var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary {
  background: var(--action);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--action-hover);
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--action);
  border: 1.5px solid var(--action);
}
.btn--secondary:hover {
  background: var(--action);
  color: var(--color-white);
}

.btn--ghost-light {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.7);
}
.btn--ghost-light:hover {
  background: var(--color-white);
  color: var(--color-deep-ink);
  border-color: var(--color-white);
}

/* Inline arrow link */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  font: 700 0.875rem/1 var(--font-sans);
  color: var(--action);
}
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* Tag / pill */
.tag {
  display: inline-block;
  padding: 4px 12px;
  font: 700 0.6875rem/1.4 var(--font-sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-tag);
  background: rgba(var(--brand-rgb), 0.08);
  color: var(--action);
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  transition: box-shadow var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-subtle);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-32);
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--color-deep-ink);
}
.brand__logo {
  display: block;
  width: 180px;
  max-width: 34vw;
  height: 56px;
  object-fit: contain;
  object-position: left center;
}
.brand__logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 10px;
  background: #fff;
}
.brand__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--action);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}
.brand__sub {
  display: block;
  font: 600 0.625rem/1 var(--font-sans);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 3px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-left: auto;
}

.nav__item { position: relative; }

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font: var(--text-nav);
  color: var(--color-deep-ink);
  border-bottom: 2px solid transparent;
}
.nav__link:hover,
.nav__item.is-open > .nav__link {
  color: var(--action);
}
.nav__link[aria-current="page"] {
  border-bottom-color: var(--action);
  color: var(--action);
}
.nav__link svg { width: 14px; height: 14px; transition: transform var(--dur-fast) var(--ease); }
.nav__item.is-open .nav__link svg { transform: rotate(180deg); }

.nav__cta { margin-left: var(--space-16); }

/* --- Mega menu --- */
.megamenu {
  position: absolute;
  top: calc(100% + 1px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(820px, calc(100vw - 80px));
  background: var(--color-white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-menu);
  border-radius: 0 0 var(--radius-modal) var(--radius-modal);
  display: grid;
  grid-template-columns: 240px 1fr;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-mid) var(--ease),
              transform var(--dur-mid) var(--ease),
              visibility var(--dur-mid);
}
.nav__item.is-open .megamenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.megamenu__aside {
  background: var(--dark);
  color: #fff;
  padding: var(--space-32);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 260px;
  background-image: linear-gradient(160deg, rgba(58,48,124,0.72), rgba(24,56,89,0.92));
  background-size: cover;
  background-position: center;
}
.megamenu__aside--corporate {
  background-image: linear-gradient(160deg, rgba(58,48,124,0.72), rgba(24,56,89,0.94)),
                    url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=900&q=70");
}
.megamenu__aside--companies {
  background-image: linear-gradient(160deg, rgba(58,48,124,0.68), rgba(24,56,89,0.94)),
                    url("https://images.unsplash.com/photo-1581092160562-40aa08e78837?auto=format&fit=crop&w=900&q=70");
}
.megamenu__aside h3 { font-size: 1.25rem; margin-bottom: var(--space-8); }
.megamenu__aside p { font: var(--text-body-sm); color: rgba(255,255,255,0.78); margin-bottom: var(--space-16); }

.megamenu__body {
  padding: var(--space-32);
  display: grid;
  gap: var(--space-24);
}
.megamenu__group-title {
  font: var(--text-eyebrow);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-12);
}
.megamenu__links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px var(--space-24);
}
.megamenu__links a {
  display: block;
  padding: 8px 0;
  font: 600 0.9375rem/1.3 var(--font-sans);
  color: var(--color-deep-ink);
  border-bottom: 1px solid transparent;
}
.megamenu__links a:hover { color: var(--action); }

.nav__sector {
  display: inline-block;
  font: 700 0.625rem/1 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}

/* --- Hamburger --- */
.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  position: relative;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 11px;
  width: 22px;
  height: 2px;
  background: var(--color-deep-ink);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast);
}
.nav__toggle span { top: 21px; }
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after { top: 7px; }
.nav__toggle.is-active span { background: transparent; }
.nav__toggle.is-active span::before { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-active span::after { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero slider
   ========================================================================== */
.hero {
  position: relative;
  min-height: clamp(520px, 78vh, 760px);
  color: #fff;
  overflow: hidden;
}
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 700ms var(--ease), visibility 700ms;
  background-size: cover;
  background-position: center;
}
.hero__slide.is-active { opacity: 1; visibility: visible; }
.hero__slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(24,56,89,0.88) 0%, rgba(24,56,89,0.62) 50%, rgba(58,48,124,0.42) 100%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  height: 100%;
  min-height: inherit;
  display: flex;
  align-items: center;
}
.hero__content { max-width: 640px; padding-block: var(--space-96); }
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  font: var(--text-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: var(--space-24);
}
.hero__eyebrow::before { content: ""; width: 32px; height: 3px; background: var(--accent); }

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, var(--size-hero));
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.hero__title em {
  font-style: normal;
  position: relative;
  white-space: nowrap;
}
.hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 6px;
  background: var(--accent);
}
.hero__text {
  font: var(--text-body-lg);
  color: rgba(255, 255, 255, 0.86);
  margin-top: var(--space-24);
  max-width: 520px;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-top: var(--space-32);
}

/* Slider controls */
.hero__controls {
  position: absolute;
  z-index: 3;
  bottom: var(--space-32);
  left: 0;
  right: 0;
}
.hero__controls-inner {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}
.hero__dots { display: flex; gap: var(--space-8); margin-right: auto; }
.hero__dot {
  width: 28px;
  height: 4px;
  background: rgba(255, 255, 255, 0.4);
  transition: background var(--dur-fast);
}
.hero__dot.is-active { background: var(--accent); }
.hero__arrow {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  transition: background var(--dur-fast), border-color var(--dur-fast);
}
.hero__arrow:hover { background: rgba(255, 255, 255, 0.14); border-color: #fff; }
.hero__arrow svg { width: 20px; height: 20px; }

/* ==========================================================================
   Cards
   ========================================================================== */

/* Value card */
.value-card {
  background: var(--bg-alt);
  border: 1px solid transparent;
  padding: var(--space-32);
  display: grid;
  gap: var(--space-12);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.value-card:hover { border-color: var(--border); background: #fff; box-shadow: var(--shadow-subtle); }
.value-card__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--action);
  margin-bottom: var(--space-8);
}
.value-card__icon svg { width: 32px; height: 32px; }
.value-card h3 { font-size: var(--size-card-title); }
.value-card p { font: var(--text-body); color: var(--text-muted); }

/* Company card */
.company-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-24);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), transform var(--dur-fast);
}
.company-card:hover {
  border-top-color: var(--action);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}
.company-card__sector {
  font: 700 0.6875rem/1 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--action);
}
.company-card h3 { font-size: 1.25rem; margin-top: var(--space-12); }
.company-card p { font: var(--text-body-sm); color: var(--text-muted); margin-top: var(--space-8); }
.company-card .link-arrow { margin-top: auto; padding-top: var(--space-24); }

/* Sector feature card (görsel üstte) */
.sector-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow var(--dur-fast), transform var(--dur-fast);
}
.sector-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-2px); }
.sector-card__media {
  aspect-ratio: 16 / 10;
  position: relative;
  background-size: cover;
  background-position: center;
}
.sector-card__media .tag { position: absolute; top: var(--space-16); left: var(--space-16); background: rgba(255,255,255,0.92); }
.sector-card__body { padding: var(--space-24); display: grid; gap: var(--space-8); }
.sector-card__body h3 { font-size: var(--size-card-title); }
.sector-card__body p { font: var(--text-body-sm); color: var(--text-muted); }

/* Affiliate (iştirak) row */
.affiliate {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-24);
  background: #fff;
  border: 1px solid var(--border);
  transition: border-color var(--dur-fast);
}
.affiliate:hover { border-color: var(--action); }
.affiliate__mark {
  width: 44px;
  height: 44px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--bg-alt);
  color: var(--action);
}
.affiliate__mark svg { width: 22px; height: 22px; }
.affiliate h3 { font-size: 1rem; }
.affiliate p { font: var(--text-body-sm); color: var(--text-muted); }

/* ==========================================================================
   Stat strip
   ========================================================================== */
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-32); }
.stat {
  border-left: 2px solid var(--action);
  padding-left: var(--space-24);
}
.stat__value {
  font-family: var(--font-display);
  font-size: var(--size-stat);
  line-height: 1;
  color: #fff;
}
.stat__label { font: var(--text-body-sm); color: rgba(255,255,255,0.7); margin-top: var(--space-8); }

/* ==========================================================================
   Timeline (kısa, anasayfa)
   ========================================================================== */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-32);
  margin-top: var(--space-48);
}
.timeline::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border);
}
.timeline__item { position: relative; padding-top: var(--space-32); }
.timeline__item::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--action);
  box-shadow: 0 0 0 4px rgba(var(--brand-rgb),0.15);
}
.timeline__year { font-family: var(--font-display); font-size: 1.75rem; color: var(--action); }
.timeline__item h3 { font-size: 1.0625rem; margin-top: var(--space-8); }
.timeline__item p { font: var(--text-body-sm); color: var(--text-muted); margin-top: var(--space-8); }
.home-history__action { margin-top: var(--space-48); }

/* ==========================================================================
   Contact band
   ========================================================================== */
.contact-band { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-64); align-items: center; }
.contact-list { display: grid; gap: var(--space-24); margin-top: var(--space-32); }
.contact-row { display: flex; align-items: flex-start; gap: var(--space-16); }
.contact-row__icon {
  width: 44px; height: 44px; flex: none;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.08);
  color: var(--action);
}
.contact-row__icon svg { width: 22px; height: 22px; }
.contact-row__label { font: var(--text-body-sm); color: rgba(255,255,255,0.6); }
.contact-row__value {
  font: 600 1.0625rem/1.4 var(--font-sans);
  color: #fff;
  overflow-wrap: anywhere;
}
.contact-row__value a:hover { color: var(--action-hover); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--dark); color: #fff; }
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-48);
  padding-block: var(--space-80);
}
.footer__brand .brand { color: #fff; }
.footer__brand .brand__sub { color: rgba(255,255,255,0.6); }
.footer__about { font: var(--text-body-sm); color: rgba(255,255,255,0.7); margin-top: var(--space-24); max-width: 280px; }
.footer__col h4 {
  font: var(--text-eyebrow);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-16);
}
.footer__col a {
  display: block;
  padding: 6px 0;
  font: var(--text-body-sm);
  color: rgba(255,255,255,0.82);
}
.footer__col a:hover { color: #fff; }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
  padding-block: var(--space-24);
  border-top: 1px solid rgba(255,255,255,0.12);
  font: var(--text-body-sm);
  color: rgba(255,255,255,0.6);
}
.footer__bottom nav { display: flex; gap: var(--space-24); }
.footer__bottom a:hover { color: #fff; }
.social { display: flex; gap: var(--space-12); }
.social a {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.82);
  transition: background var(--dur-fast), border-color var(--dur-fast);
}
.social a:hover { background: var(--action); border-color: var(--action); color: #fff; }
.social svg { width: 18px; height: 18px; }

/* CTA banner (kariyer) */
.cta-banner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  align-items: center;
  gap: var(--space-48);
  background: var(--bg-alt);
  border-left: 4px solid var(--action);
  padding: var(--space-64);
}
.cta-banner h2 { font-size: var(--size-section-title); }
.cta-banner p { font: var(--text-body-lg); color: var(--text-muted); margin-top: var(--space-16); }
.cta-banner__actions { display: flex; justify-content: flex-end; }