/* ============ Tokenlar ============ */
:root {
  --zemin: #f4f6f5;        /* soğuk porselen */
  --kart: #ffffff;
  --murekkep: #1a201d;     /* grafit */
  --murekkep-soft: #4c5652;
  --kobalt: #1f3fc4;
  --kobalt-koyu: #172f96;
  --saglik: #12915b;       /* servis durumu yeşili */
  --line: #dfe4e1;
  --line-strong: #c4ccc8;

  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --maxw: 1080px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pulses { display: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  background: var(--zemin);
  color: var(--murekkep);
  line-height: 1.6;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--kobalt); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--kobalt);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============ Üst bar ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.9rem var(--pad);
  background: color-mix(in srgb, var(--zemin) 88%, transparent);
  backdrop-filter: blur(8px);
}

.topbar-id {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--murekkep);
  text-decoration: none;
}
.topbar-id span { color: var(--kobalt); }

.topbar-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.92rem;
}
.topbar-nav a {
  color: var(--murekkep-soft);
  text-decoration: none;
  font-weight: 500;
}
.topbar-nav a:hover { color: var(--murekkep); }
.topbar-nav .topbar-cta {
  color: var(--kobalt);
  border: 1.5px solid var(--kobalt);
  border-radius: 999px;
  padding: 0.3rem 0.95rem;
}
.topbar-nav .topbar-cta:hover { background: var(--kobalt); color: #fff; }

/* ============ Ortak ============ */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--saglik);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--saglik) 18%, transparent);
  margin-right: 0.5em;
  vertical-align: 1px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--murekkep-soft);
  letter-spacing: 0.01em;
}

.section { padding: clamp(3rem, 7vw, 5rem) 0 0; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 2rem;
}
.endpoint {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--kobalt);
  letter-spacing: 0;
}
.endpoint::before { content: "GET "; color: var(--murekkep-soft); }

/* ============ Hero ============ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(2.5rem, 6vw, 5rem) 0 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 5.4rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0.9rem 0 1.3rem;
}

.hero-lede {
  max-width: 34rem;
  color: var(--murekkep-soft);
}
.hero-lede strong { color: var(--murekkep); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.8rem 0;
}

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--murekkep);
  border: 1.5px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.55rem 1.25rem;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.btn:hover { border-color: var(--murekkep); }
.btn-primary {
  background: var(--kobalt);
  border-color: var(--kobalt);
  color: #fff;
}
.btn-primary:hover { background: var(--kobalt-koyu); border-color: var(--kobalt-koyu); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2.2rem;
  border-top: 1px solid var(--line);
  padding-top: 1.3rem;
}
.hero-meta dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--murekkep-soft);
}
.hero-meta dd { font-weight: 600; font-size: 0.98rem; }

/* ============ Sistem haritası ============ */
.sysmap {
  background: var(--kart);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 12px 40px -18px rgb(26 32 29 / 0.18);
}

.sysmap-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.sysmap-title { color: var(--murekkep-soft); }
.sysmap-health { color: var(--saglik); }

.sysmap svg { display: block; width: 100%; height: auto; padding: 0.6rem 0.4rem 0.2rem; }

.node rect { fill: var(--zemin); stroke: var(--line-strong); stroke-width: 1.2; }
.node text {
  font-family: var(--font-mono);
  font-size: 12.5px;
  fill: var(--murekkep);
}
.node .node-sub { font-size: 10.5px; fill: var(--murekkep-soft); }

.node-gateway rect { fill: var(--kobalt); stroke: var(--kobalt-koyu); }
.node-gateway text { fill: #fff; font-weight: 500; }
.node-gateway .node-sub { fill: #b9c4f2; }

.node-service rect { fill: #fff; }
.node-service .node-name { font-weight: 500; }

.node-side rect { fill: #eef1ef; stroke-dasharray: 3 3; }

.node-data rect { fill: #eef1ef; }
.node-data text { fill: var(--murekkep-soft); font-size: 11.5px; }

.pulses circle { fill: var(--saglik); }

/* ============ Deneyim ============ */
.job {
  background: var(--kart);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1.4rem, 3.4vw, 2.2rem);
}
.job + .job { margin-top: 1.4rem; }

.job-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem 1.5rem;
  margin-bottom: 0.9rem;
}
.job-head h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.job-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--murekkep-soft);
  display: flex;
  gap: 1rem;
}
.job-org { color: var(--kobalt); }

.job-summary { color: var(--murekkep-soft); max-width: 46rem; }

.projects {
  list-style: none;
  margin-top: 1.3rem;
  display: grid;
  gap: 1rem;
}
.projects li {
  border-left: 2px solid var(--line-strong);
  padding-left: 1.1rem;
}
.projects h4 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.15rem; }
.projects p { font-size: 0.95rem; color: var(--murekkep-soft); max-width: 44rem; }

.stack {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--murekkep-soft);
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

/* ============ Yetkinlikler ============ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
}
.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--murekkep-soft);
  text-transform: lowercase;
  margin-bottom: 0.8rem;
}
.skill-group h3::before { content: "# "; color: var(--kobalt); }

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tags li {
  background: var(--kart);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.3rem 0.7rem;
  font-size: 0.88rem;
  font-weight: 500;
}

/* ============ Eğitim ============ */
.edu-list { list-style: none; display: grid; gap: 1.1rem; }
.edu-list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.1rem;
}
.edu-years {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--murekkep-soft);
}
.edu-list h3 { font-size: 1.05rem; font-weight: 600; }
.edu-list p { color: var(--murekkep-soft); font-size: 0.95rem; }

/* ============ İletişim ============ */
.contact { padding-bottom: 1rem; }
.contact-lede { color: var(--murekkep-soft); max-width: 34rem; }

.contact-mail {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--murekkep);
  text-decoration: none;
  margin: 1.2rem 0 1.4rem;
  border-bottom: 3px solid var(--kobalt);
  padding-bottom: 0.15rem;
  overflow-wrap: anywhere;
}
.contact-mail:hover { color: var(--kobalt); }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* ============ Footer ============ */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem var(--pad) 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--murekkep-soft);
  border-top: 1px solid var(--line);
  margin-top: 4rem;
}

/* ============ Mobil ============ */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .topbar-nav a:not(.topbar-cta) { display: none; }
  .edu-list li { grid-template-columns: 1fr; gap: 0.2rem; }
}