:root {
  --bg: #0f1410;
  --bg-elev: #182018;
  --ink: #eef2ea;
  --muted: #9aa893;
  --line: rgba(238, 242, 234, 0.12);
  --accent: #c8f06a;
  --accent-ink: #12170f;
  --warm: #f0d9b5;
  --max: 1120px;
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, #243222 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1c2a24 0%, transparent 50%),
    var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(12px);
  background: rgba(15, 20, 16, 0.82);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
}
.site-header nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.92rem;
  color: var(--muted);
}
.site-header nav a:hover { color: var(--ink); }

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 3rem;
}
.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.08;
  margin: 0 0 1.25rem;
  max-width: 16ch;
}
.hero h1 em {
  font-style: italic;
  color: var(--warm);
}
.lede {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 600;
}
.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
}
.btn.ghost:hover {
  border-color: var(--muted);
  color: var(--ink);
}

.strip {
  max-width: var(--max);
  margin: 0 auto 2rem;
  padding: 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  border-block: 1px solid var(--line);
}
.strip strong {
  display: block;
  font-family: var(--display);
  font-size: 1.6rem;
  color: var(--accent);
}
.strip span {
  color: var(--muted);
  font-size: 0.85rem;
}

.projects, .skills, .contact {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
.section-head h2 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  margin: 0 0 0.5rem;
}
.section-head p {
  color: var(--muted);
  margin: 0 0 2.5rem;
  max-width: 52ch;
}

.project {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.project.reverse { direction: rtl; }
.project.reverse > * { direction: ltr; }
.tag {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}
.project h3 {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 400;
  margin: 0 0 0.85rem;
  line-height: 1.15;
}
.project-copy p { color: var(--muted); margin: 0 0 1rem; }
.project-copy ul {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  color: var(--ink);
}
.project-copy li { margin-bottom: 0.35rem; }
.meta {
  font-size: 0.85rem !important;
  color: var(--muted) !important;
}

.project-links {
  margin-top: 1rem;
}
.project-links .btn {
  text-decoration: none;
}
.repo-link {
  display: inline-block;
  margin-top: 0.25rem;
  padding: 0.75rem 1.15rem;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink) !important;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none !important;
  border: none;
  word-break: break-all;
}
.repo-link:hover {
  filter: brightness(1.08);
  color: var(--accent-ink) !important;
}

.gallery-wrap { min-width: 0; }
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}
.tab {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.tab.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
}
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-height: 720px;
  overflow: auto;
  padding: 0.65rem;
  background: #141a14;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.gallery.gallery--desktop {
  grid-template-columns: 1fr;
}
.gallery figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background: #1a221a;
  cursor: zoom-in;
  border: 1px solid var(--line);
}
/* Telefon ekranları: dikey kart, ekranı doldur */
.gallery--phone figure {
  aspect-ratio: 9 / 16;
}
.gallery--phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}
/* Web / masaüstü: kutu görsele göre boylanır, siyah şerit yok */
.gallery--desktop figure {
  aspect-ratio: auto;
  background: transparent;
  border: 1px solid var(--line);
}
.gallery--desktop img {
  width: 100%;
  height: auto;
  display: block;
  background: transparent;
}
.gallery figure:hover img {
  transform: scale(1.02);
  transition: transform 0.3s ease;
}
.gallery figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.45rem 0.55rem;
  font-size: 0.7rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
  color: #eee;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gallery-empty {
  grid-column: 1 / -1;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.skills .skill-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.skills .skill-grid > div {
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}
.skills h4 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.skills p {
  margin: 0;
  color: var(--muted);
}

.contact h2 {
  font-family: var(--display);
  font-size: 2.4rem;
  font-weight: 400;
  margin: 0 0 0.75rem;
}
.contact > p { color: var(--muted); max-width: 50ch; }
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.contact-list li { margin-bottom: 0.5rem; }
.contact-list a {
  border-bottom: 1px solid var(--line);
}
.contact-list a:hover { border-color: var(--accent); color: var(--accent); }

footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: #000;
  display: grid;
  place-items: center;
  padding: 1rem;
  overflow: auto;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-height: 92vh;
  max-width: min(1100px, 96vw);
  width: auto;
  height: auto;
  object-fit: contain;
  background: #000;
  border-radius: 8px;
  margin: auto;
}
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

@media (max-width: 900px) {
  .strip { grid-template-columns: repeat(2, 1fr); }
  .project, .project.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  .gallery { max-height: 560px; }
  .gallery.gallery--desktop { grid-template-columns: 1fr; }
  .skills .skill-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-header nav { display: none; }
  .strip { grid-template-columns: 1fr 1fr; }
  .gallery--phone { grid-template-columns: 1fr 1fr; }
}