/* Temel katman: sifirlama, tipografi, duzen yardimcilari */

*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: var(--lh-body);
  font-weight: 400;
  color: var(--ink-2);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  overflow-x: hidden;
  min-height: 100vh;
}

img,
picture,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

img { height: auto; }

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button { background: none; border: 0; }

/* Tipografi */

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.022em;
  text-wrap: balance;
}

h1 { font-size: var(--step-6); letter-spacing: -0.032em; }
h2 { font-size: var(--step-5); letter-spacing: -0.028em; }
h3 { font-size: var(--step-3); letter-spacing: -0.022em; }
h4 { font-size: var(--step-2); letter-spacing: -0.016em; }
h5 { font-size: var(--step-1); letter-spacing: -0.012em; }
h6 { font-size: var(--step-0); letter-spacing: 0; }

p { text-wrap: pretty; }
p + p { margin-top: 1em; }

a {
  color: var(--brand);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

a:hover { color: var(--accent); }

strong, b { font-weight: 650; color: var(--ink); }

small { font-size: var(--step--1); }

ul, ol { padding-left: 1.15em; }
li + li { margin-top: 0.35em; }

hr {
  border: 0;
  height: 1px;
  background: var(--line);
}

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

/* Vurgulanan kelime (baslik icinde) */
.hl { color: var(--brand); }
.hl-accent { color: var(--accent); }

/* Erisim */

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

:focus:not(:focus-visible) { outline: none; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--sp-4);
  z-index: 2000;
  padding: 0.75rem 1.25rem;
  background: var(--brand);
  color: #fff;
  border-radius: 0 0 var(--r-md) var(--r-md);
  font-weight: 600;
  transition: top var(--t-base) var(--ease);
}

.skip-link:focus { top: 0; color: #fff; }

/* Duzen */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap-narrow {
  width: 100%;
  max-width: var(--wrap-narrow);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section--tight { padding-block: calc(var(--section-y) * 0.62); }
.section--flush-top { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }

.section--alt { background: var(--surface-2); }
.section--line { border-top: 1px solid var(--line); }

.section--dark {
  background:
    radial-gradient(120% 100% at 85% 0%, rgba(3, 99, 173, 0.42) 0%, transparent 62%),
    linear-gradient(168deg, #073a5c 0%, var(--dark) 45%, var(--brand-950) 100%);
  background-color: var(--dark);
  color: var(--on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 { color: #fff; }

.section--dark .hl { color: var(--accent-soft); }
.section--dark p { color: var(--on-dark-mute); }
.section--dark strong { color: #fff; }

/* Izgara */
.grid { display: grid; gap: var(--sp-5); }
.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--auto { grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); }
.grid--gap-lg { gap: var(--sp-6); }

@media (max-width: 1040px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

.stack > * + * { margin-top: var(--sp-4); }
.stack-lg > * + * { margin-top: var(--sp-6); }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }

.text-center { text-align: center; }
.nowrap { white-space: nowrap; }
.mx-auto { margin-inline: auto; }
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--sp-4); }
.mt-5 { margin-top: var(--sp-5); }
.mt-6 { margin-top: var(--sp-6); }
.mt-7 { margin-top: var(--sp-7); }
.mt-8 { margin-top: var(--sp-8); }

.measure { max-width: 62ch; }
.measure-sm { max-width: 48ch; }

/* Iki sutunlu icerik + gorsel */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}

.split--wide-left { grid-template-columns: 1.15fr 1fr; }
.split--wide-right { grid-template-columns: 1fr 1.15fr; }
.split--top { align-items: start; }

@media (max-width: 900px) {
  .split,
  .split--wide-left,
  .split--wide-right { grid-template-columns: minmax(0, 1fr); }
  .split--reverse-mobile > :first-child { order: 2; }
}

/* 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;
  }
}

/* Baski */

@media print {
  .site-header,
  .site-footer,
  .hero-stage,
  .cta-band,
  .quick-bar { display: none !important; }
  body { color: #000; font-size: 11pt; }
  a[href^="http"]::after { content: ' (' attr(href) ')'; font-size: 9pt; }
}