/* ==========================================================================
   Temel katman — tipografi, erişilebilirlik, yardımcı sınıflar
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Temel
   -------------------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
  /* Sticky header'ın anchor hedefini kapatmaması için */
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--ss-bg);
  color: var(--ss-text-soft);
  font-family: var(--bs-body-font-family);
  font-weight: 500;
  line-height: 1.65;
  overflow-x: hidden;
  /* Galano'da italik/kalın varyant yok — tarayıcı taklit etmesin */
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--ss-green);
  color: #fff;
}

/* --------------------------------------------------------------------------
   2. Tipografi
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6,
.display-xl, .display-lg {
  font-weight: 700;
  color: var(--ss-text);
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}

/* Sitenin imzası: dev, sıkı, büyük harf display tipografi */
.display-xl {
  font-size: clamp(2.75rem, 8.5vw, 7rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.display-lg {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.display-md {
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ss-text);
}

h1 { font-size: clamp(2.25rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); letter-spacing: -0.015em; }
h4 { font-size: 1.125rem; letter-spacing: -0.01em; }
h5 { font-size: 1rem; }
h6 { font-size: 0.9375rem; }

p {
  margin: 0 0 1.15em;
  /* Uzun metinlerde satır uzunluğunu 60–72 karakterde tut */
  max-width: 68ch;
}

p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.6;
  color: var(--ss-text-soft);
}

strong, b { font-weight: 700; color: var(--ss-text); }

/* Bölüm üstü küçük etiket — "01 / KURUMSAL" */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ss-green-text);
  margin-bottom: var(--sp-4);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--ss-green-text);
  flex: none;
}

.eyebrow--plain::before { display: none; }

.eyebrow--center { display: flex; justify-content: center; }

/* Vurgu renkleri */
.text-green  { color: var(--ss-green-text); }
.text-neon   { color: var(--ss-neon); }
.text-white  { color: var(--ss-text) !important; }
.text-soft   { color: var(--ss-text-soft); }
.text-muted-ss { color: var(--ss-text-muted); }

/* Rakam sütunlarında hizalama kaymasını önler */
.tabular { font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------------------
   3. Bağlantılar
   -------------------------------------------------------------------------- */
a {
  color: var(--ss-green-text);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

a:hover { color: var(--ss-neon); }

/* İçerik metni içindeki bağlantılar altı çizili kalsın (renk tek gösterge olmasın) */
.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* --------------------------------------------------------------------------
   4. Erişilebilirlik
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -120%);
  z-index: 2000;
  padding: 0.875rem 1.5rem;
  background: var(--ss-neon);
  color: #000;
  font-weight: 700;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: transform var(--t-base) var(--ease-out);
}

.skip-link:focus {
  transform: translate(-50%, 0);
  color: #000;
}

:focus-visible {
  outline: 2px solid var(--ss-neon);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

/* Fare tıklamasında halka gösterme, klavyede göster */
:focus:not(:focus-visible) { outline: none; }

.visually-hidden-focusable:not(:focus):not(:focus-within) {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   5. Düzen yardımcıları
   -------------------------------------------------------------------------- */
.container-ss {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

/* Zebra ritmi — bölümler arasında hafif zemin farkı */
.section--alt {
  background: var(--ss-bg-alt);
  border-block: 1px solid var(--ss-line);
}

.section-head {
  max-width: 56rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

/* İnce ayırıcı çizgi */
.rule {
  height: 1px;
  background: linear-gradient(90deg, var(--ss-line-strong), transparent);
  border: 0;
  margin: 0;
}

/* Yumuşak yeşil ışık lekesi — dekoratif, pointer-events yok */
.glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(90px);
  opacity: 0.5;
  z-index: 0;
}

.glow--green { background: var(--ss-glow-green); }

/* Marka amblemi filigranı */
.watermark {
  position: absolute;
  inset: auto;
  pointer-events: none;
  opacity: 0.028;
  z-index: 0;
  filter: grayscale(1) brightness(3);
}

/* --------------------------------------------------------------------------
   6. Butonlar
   -------------------------------------------------------------------------- */
.btn-ss {
  --btn-bg: var(--ss-green);
  --btn-fg: #ffffff;
  --btn-bd: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  /* Dokunma hedefi ≥ 44px */
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-pill);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease),
              transform var(--t-fast) var(--ease),
              box-shadow var(--t-base) var(--ease);
}

.btn-ss:hover {
  color: var(--btn-fg);
  transform: translateY(-2px);
}

.btn-ss:active { transform: translateY(0); }

.btn-ss--primary:hover {
  --btn-bg: var(--ss-green-hover);
  box-shadow: 0 10px 30px -8px var(--ss-glow-green);
}

.btn-ss--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ss-text);
  --btn-bd: var(--ss-line-strong);
}

.btn-ss--ghost:hover {
  --btn-bg: rgba(255, 255, 255, 0.06);
  --btn-bd: var(--ss-text);
}

.btn-ss--neon {
  --btn-bg: var(--ss-neon);
  --btn-fg: #04180d;
}

.btn-ss--neon:hover {
  --btn-bg: #4dffab;
  --btn-fg: #04180d;
  box-shadow: 0 10px 30px -8px var(--ss-glow-neon);
}

.btn-ss--sm {
  min-height: 44px;
  padding: 0.5rem 1.125rem;
  font-size: 0.75rem;
}

.btn-ss .icon { flex: none; }

/* Metin bağlantısı + ok — hover'da ok kayar */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ss-text);
}

.link-arrow .icon {
  transition: transform var(--t-base) var(--ease-out);
  color: var(--ss-green-text);
}

.link-arrow:hover { color: var(--ss-neon); }
.link-arrow:hover .icon { transform: translateX(5px); color: var(--ss-neon); }

/* --------------------------------------------------------------------------
   7. İkonlar
   -------------------------------------------------------------------------- */
.icon {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
  flex: none;
  vertical-align: middle;
}

.icon--sm { width: 16px; height: 16px; }
.icon--lg { width: 26px; height: 26px; }

/* --------------------------------------------------------------------------
   8. Görseller
   -------------------------------------------------------------------------- */
img, svg, video {
  max-width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   9. Kaydırma ile beliren içerik
   JS yoksa içerik yine görünür (aşağıdaki .js-on koşulu sayesinde)
   -------------------------------------------------------------------------- */
.js-on .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-slow) var(--ease-out),
              transform var(--t-slow) var(--ease-out);
}

.js-on .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Sıralı beliriş — liste öğeleri arasında 60ms gecikme */
.js-on .reveal[data-delay="1"] { transition-delay: 60ms; }
.js-on .reveal[data-delay="2"] { transition-delay: 120ms; }
.js-on .reveal[data-delay="3"] { transition-delay: 180ms; }
.js-on .reveal[data-delay="4"] { transition-delay: 240ms; }

/* Yazdırmada hiçbir içerik gizli kalmasın */
@media print {
  .js-on .reveal { opacity: 1 !important; transform: none !important; }
}

/* --------------------------------------------------------------------------
   10. Azaltılmış hareket tercihi
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .js-on .reveal {
    opacity: 1;
    transform: none;
  }
}