:root {
  --mavi: #2563eb;
  --mavi-koyu: #1d4ed8;
  --turkuaz: #06b6d4;
  --gradyan: linear-gradient(135deg, var(--mavi), var(--turkuaz));
  --metin: #1f2937;
  --metin-2: #6b7280;
  --zemin: #f9fafb;
  --kart: #ffffff;
  --cizgi: #e5e7eb;
  --etiket-zemin: #eff6ff;
  --etiket-metin: #1d4ed8;
  --kod-zemin: #0f172a;
  --kod-metin: #e2e8f0;
  --golge: 0 1px 2px rgb(0 0 0 / .04), 0 4px 12px rgb(0 0 0 / .05);
  --yaricap: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --mavi: #60a5fa;
    --mavi-koyu: #93c5fd;
    --metin: #e5e7eb;
    --metin-2: #9ca3af;
    --zemin: #0b1120;
    --kart: #111827;
    --cizgi: #1f2937;
    --etiket-zemin: #172554;
    --etiket-metin: #bfdbfe;
    --kod-zemin: #020617;
    --golge: none;
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--metin);
  background: var(--zemin);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--mavi); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 2.75rem); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: 1.35rem; font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }

.kap { width: min(100% - 2.5rem, 960px); margin-inline: auto; }
main.kap { flex: 1; padding-block: 2.5rem 4rem; }
main section { margin-top: 3.5rem; }

/* Üst menü */
.ust {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--zemin) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cizgi);
}
.ust-ic { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.logo { display: flex; align-items: center; gap: .6rem; font-weight: 600; color: var(--metin); }
.logo:hover { text-decoration: none; }
.logo-ok {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px;
  background: var(--gradyan); color: #fff; font-size: .85rem; font-weight: 700;
}
nav { display: flex; gap: .25rem; }
nav a { color: var(--metin-2); padding: .4rem .75rem; border-radius: 8px; font-weight: 500; font-size: .95rem; }
nav a:hover { color: var(--metin); background: var(--cizgi); text-decoration: none; }
nav a[aria-current="page"] { color: var(--mavi); }

@media (max-width: 560px) {
  .logo span:not(.logo-ok), .logo { font-size: 0; gap: 0; }
  .logo-ok { font-size: .85rem; }
}

/* Giriş */
.giris { display: flex; align-items: center; gap: 2.5rem; margin-top: 1.5rem; }
.avatar {
  width: 160px; height: 160px; border-radius: 50%; object-fit: cover; flex-shrink: 0;
  padding: 4px; background: var(--gradyan);
}
.avatar-kutu { display: flex; flex-direction: column; align-items: center; gap: .9rem; flex-shrink: 0; }
.rozet {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .85rem; font-weight: 600; letter-spacing: .01em;
  padding: .3rem .9rem; border-radius: 999px; color: #fff; background: #512bd4;
  box-shadow: 0 2px 8px rgb(81 43 212 / .3);
}
.rozet::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #fff; opacity: .85; }
.selam { margin: 0; color: var(--metin-2); font-weight: 500; }
.giris h1 {
  margin: 0;
  background: var(--gradyan); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.unvan { margin: .25rem 0 1rem; font-weight: 500; }
.ozet { margin: 0 0 1.25rem; color: var(--metin-2); max-width: 60ch; }
.baglantilar { display: inline-flex; gap: .9rem; }
.baglantilar a { color: var(--metin-2); display: inline-flex; }
.baglantilar a:hover { color: var(--mavi); }

@media (max-width: 680px) {
  .giris { flex-direction: column; text-align: center; gap: 1.5rem; }
  .avatar { width: 128px; height: 128px; }
  .ozet { margin-inline: auto; }
}

/* Kartlar */
.kart {
  background: var(--kart);
  border: 1px solid var(--cizgi);
  border-radius: var(--yaricap);
  padding: 1.5rem;
  box-shadow: var(--golge);
}
.su-siralar ul { margin: 0; padding-left: 1.2rem; }
.su-siralar li::marker { color: var(--turkuaz); }
.su-siralar h2 { font-size: 1.05rem; }

.bolum-bas { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.25rem; }
.bolum-bas h2 { margin: 0; }
.bolum-bas a { font-weight: 500; font-size: .95rem; }

.izgara { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.izgara-genis { grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); }
@media (max-width: 480px) { .izgara-genis { grid-template-columns: 1fr; } }

.proje { display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease; }
.proje:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--mavi) 40%, var(--cizgi)); }
.proje-ust { display: flex; justify-content: space-between; align-items: center; margin-bottom: .75rem; }
.proje h3 a { color: var(--metin); }
.proje > p { color: var(--metin-2); margin: 0 0 1rem; font-size: .95rem; }
.dis-link { font-size: 1.15rem; line-height: 1; color: var(--metin-2); }
.etiket { font-size: .75rem; font-weight: 500; color: var(--metin-2); text-transform: uppercase; letter-spacing: .04em; }
.ozellikler { margin: 0 0 1rem; padding-left: 1.1rem; font-size: .92rem; }
.ozellikler li { margin-bottom: .2rem; }

.teknolojiler { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; padding: 0; margin: auto 0 0; }
.teknolojiler li {
  font-size: .78rem; font-weight: 500; padding: .15rem .6rem; border-radius: 999px;
  background: var(--etiket-zemin); color: var(--etiket-metin);
}

/* Not listesi */
.not-liste { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--cizgi); }
.not-satir a {
  display: grid; grid-template-columns: 9.5rem 1fr; column-gap: 1.5rem;
  padding: 1.1rem .25rem; border-bottom: 1px solid var(--cizgi); color: var(--metin);
}
.not-satir a:hover { text-decoration: none; background: var(--kart); }
.not-satir time { color: var(--metin-2); font-size: .9rem; grid-row: span 2; padding-top: .1rem; }
.not-baslik { font-weight: 600; }
.not-satir a:hover .not-baslik { color: var(--mavi); }
.not-ozet { color: var(--metin-2); font-size: .92rem; }
@media (max-width: 600px) {
  .not-satir a { grid-template-columns: 1fr; }
  .not-satir time { grid-row: auto; }
}

/* Sayfa başlığı */
.sayfa-bas { margin: 1rem 0 2.5rem; }
.sayfa-bas p { color: var(--metin-2); margin: 0; }
.sayfa-bas.bos { text-align: center; padding-block: 4rem; }
.meta { font-size: .9rem; margin-bottom: .5rem !important; }

/* Yazı gövdesi */
.yazi { max-width: 70ch; }
.yazi h2 { margin-top: 2.25rem; }
.yazi p, .yazi ul, .yazi ol { margin: 0 0 1.1rem; }
.yazi li { margin-bottom: .3rem; }
.yazi code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .88em;
  background: var(--etiket-zemin); color: var(--etiket-metin); padding: .1em .35em; border-radius: 5px;
}
.yazi pre {
  background: var(--kod-zemin); color: var(--kod-metin);
  padding: 1rem 1.25rem; border-radius: 10px; overflow-x: auto; margin: 0 0 1.25rem; line-height: 1.55;
}
.yazi pre code { background: none; color: inherit; padding: 0; font-size: .85rem; }
.yazi table { border-collapse: collapse; margin: 0 0 1.25rem; font-size: .95rem; }
.yazi th, .yazi td { border: 1px solid var(--cizgi); padding: .5rem .9rem; text-align: left; }
.yazi th { background: var(--kart); }
.yazi blockquote { margin: 0 0 1.1rem; padding-left: 1rem; border-left: 3px solid var(--turkuaz); color: var(--metin-2); }
.yazi img { max-width: 100%; border-radius: 10px; }
.not .sayfa-bas .teknolojiler { margin-top: 1rem; }
.not-alt { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--cizgi); }

/* Zaman çizelgesi */
.zaman { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--cizgi); }
.zaman li { position: relative; padding: 0 0 1.75rem 1.5rem; }
.zaman li::before {
  content: ""; position: absolute; left: -7px; top: .45rem;
  width: 12px; height: 12px; border-radius: 50%; background: var(--gradyan);
}
.zaman li:last-child { padding-bottom: .25rem; }
.zaman h3 { margin: .1rem 0 0; }
.zaman p { margin: 0; }
.donem { font-size: .85rem; color: var(--metin-2); font-weight: 500; }
.kurum { color: var(--metin-2); font-size: .95rem; margin-bottom: .35rem !important; }

.yetenekler { display: grid; grid-template-columns: 7rem 1fr; gap: .9rem 1.5rem; margin: 0; }
.yetenekler dt { font-weight: 600; padding-top: .1rem; }
.yetenekler dd { margin: 0; }
@media (max-width: 520px) { .yetenekler { grid-template-columns: 1fr; gap: .4rem; } .yetenekler dd { margin-bottom: .8rem; } }

.iletisim p { margin: 0; }

/* Alt bilgi */
.alt { border-top: 1px solid var(--cizgi); color: var(--metin-2); font-size: .9rem; }
.alt-ic { display: flex; justify-content: space-between; align-items: center; padding-block: 1.5rem; }