:root {
  --zemin: #eef1ec;
  --yazi: #1d2b2f;
  --soluk: #56666a;
  --cizgi: #cdd5cf;
  --vurgu: #2a45e8;
  --vurgu-yazi: #ffffff;
  color-scheme: light;
}
:root[data-tema="koyu"] {
  --zemin: #14201f;
  --yazi: #e8eee9;
  --soluk: #9db0ab;
  --cizgi: #2c3e3c;
  --vurgu: #8fa2ff;
  --vurgu-yazi: #14201f;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-tema="acik"]):not([data-tema="koyu"]) {
    --zemin: #14201f; --yazi: #e8eee9; --soluk: #9db0ab;
    --cizgi: #2c3e3c; --vurgu: #8fa2ff; --vurgu-yazi: #14201f;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--zemin);
  color: var(--yazi);
  font-family: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.125rem;
  line-height: 1.6;
}
a { color: inherit; }
:focus-visible { outline: 3px solid var(--vurgu); outline-offset: 3px; }

.top, main, footer { width: min(100% - 2.5rem, 46rem); margin-inline: auto; }

.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.5rem 0;
}
.logo { font-weight: 800; text-decoration: none; font-size: 1.25rem; letter-spacing: .02em; }
nav { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; font-size: 1rem; }
nav a { text-decoration: none; color: var(--soluk); }
nav a:hover { color: var(--yazi); }
nav button {
  font: inherit; font-size: .9rem; cursor: pointer;
  background: none; color: var(--yazi);
  border: 1px solid var(--cizgi); border-radius: 999px; padding: .25rem .9rem;
}
nav button:hover { border-color: var(--yazi); }

.hero { padding: 5rem 0 4rem; }
.selam { margin: 0 0 1rem; color: var(--soluk); }
h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(2.2rem, 7vw, 4rem);
  line-height: 1.05; font-weight: 800; letter-spacing: -.02em;
}
.lead { max-width: 34rem; color: var(--soluk); margin: 0 0 2rem; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600;
  background: var(--vurgu); color: var(--vurgu-yazi);
  padding: .8rem 1.4rem; border-radius: .5rem;
}
.btn:hover { filter: brightness(1.1); }

.blok { padding: 3rem 0; border-top: 1px solid var(--cizgi); }
h2 { margin: 0 0 1.25rem; font-size: 1.5rem; font-weight: 600; }
.metin { max-width: 36rem; }
.metin p { margin: 0 0 1rem; }

.projeler { list-style: none; margin: 0; padding: 0; }
.projeler li + li { border-top: 1px solid var(--cizgi); }
.projeler a {
  display: grid; grid-template-columns: 1fr auto; gap: .15rem 1rem;
  padding: 1.1rem 0; text-decoration: none;
}
.projeler .ad { font-weight: 600; font-size: 1.25rem; }
.projeler .acik { grid-column: 1; color: var(--soluk); font-size: 1rem; }
.projeler .yil { grid-row: 1; grid-column: 2; color: var(--soluk); }
.projeler a:hover .ad { color: var(--vurgu); text-decoration: underline; text-underline-offset: 4px; }

.mail { font-size: 1.5rem; font-weight: 600; text-underline-offset: 5px; }
.sosyal { list-style: none; padding: 0; margin: 1.5rem 0 0; display: flex; gap: 1.5rem; }

footer { padding: 2rem 0 3rem; color: var(--soluk); font-size: .95rem; border-top: 1px solid var(--cizgi); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media (max-width: 30rem) { .hero { padding-top: 3rem; } }