/* ── Personal site · Talha Ayşat Polat ─────────────────────────────
   Quiet workspace design: dark navy surfaces, one blue accent family
   built on #556D8F, mono labels, glass cards, pill buttons.        */

:root {
  --bg-0: #10141c;
  --bg-1: #161c27;
  --bg-2: #1d2432;
  --line: rgba(142,166,196,.26);
  --line-soft: rgba(142,166,196,.13);
  --fg-0: #eef2f7;
  --fg-1: #d9e0ea;
  --fg-2: #b3bdcb;
  --fg-3: #8b95a5;
  --accent: #8ea9c9;
  --accent-strong: #b6c9de;
  --accent-deep: #556D8F;
  --chip: #e9edf3;
  --f-body: "Inter", system-ui, -apple-system, sans-serif;
  --f-mono: "Geist Mono", "IBM Plex Mono", ui-monospace, monospace;
  --pad-x: clamp(24px, 5vw, 88px);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg-1);
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1100px 640px at 78% 10%, rgba(85,109,143,.22), transparent 60%),
    radial-gradient(900px 600px at 12% 90%, rgba(60,78,110,.16), transparent 65%),
    var(--bg-0);
  background-attachment: fixed;
  overflow-x: hidden;
  min-height: 100vh;
}

::selection { background: var(--accent); color: var(--bg-0); }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: var(--fg-3); border-radius: 4px; }

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.mono { font-family: var(--f-mono); }
.dim { color: var(--fg-3); }

/* ── top bar ─────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem var(--pad-x);
  background: rgba(16,20,28,.82);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.topbar a { color: var(--fg-1); }
.topbar a:hover { color: var(--accent-strong); text-decoration: none; }
.topbar .tb-name { color: var(--accent-strong); }
.topbar .tb-nav { display: flex; flex-direction: row; gap: 1.4rem; margin-left: auto; }
@media (max-width: 600px) {
  .topbar { flex-direction: column; align-items: center; gap: .35rem; padding: .7rem var(--pad-x); }
  .topbar .tb-nav { margin-left: 0; justify-content: center; }
}

/* ── main column ─────────────────────────────────────────────────── */
main {
  max-width: 1140px;
  margin: 0 auto;
  padding: 3.4rem var(--pad-x) 3rem;
}

.page-label {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin: 0 0 1.1rem;
}
.page-label .num { color: var(--accent); }
.page-label .div { width: 2.4rem; height: 1px; background: linear-gradient(90deg, var(--accent), transparent); }

h1 {
  font-weight: 600;
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--fg-0);
  margin: 0 0 .4rem;
}
h1 .role { display: block; font-size: .95rem; font-weight: 400; color: var(--fg-2); letter-spacing: .06em; margin-top: .6rem; }

h2 {
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--fg-0);
  letter-spacing: -0.01em;
  margin: 2.2rem 0 .8rem;
}
h3 {
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 1.6rem 0 .6rem;
}

p { margin: 0 0 .9rem; }
.lede { color: var(--fg-2); font-size: 1.02rem; }
strong { color: var(--fg-0); }
em { color: var(--fg-1); font-style: italic; }
code { font-family: var(--f-mono); font-size: .86em; color: var(--accent-strong); }

/* ── pill buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--f-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--fg-0);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .62rem 1.15rem;
  background: rgba(29,36,50,.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 300ms cubic-bezier(.22,.61,.36,1);
  white-space: nowrap;
}
.btn:hover {
  border-color: rgba(142,169,201,.55);
  background: rgba(40,52,72,.7);
  transform: translateY(-1px);
  text-decoration: none;
}
.btn .arrow { color: var(--accent); transition: transform 300ms ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-row { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.4rem 0 0; justify-content: start; }

/* ── hero ────────────────────────────────────────────────────────── */
.hero { padding: 0 0 1.6rem; }
.hero .tagline { color: var(--fg-2); margin: .8rem 0 0; max-width: 40rem; }

/* ── thumbnail cards ─────────────────────────────────────────────── */
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
  margin: 1.6rem 0 0;
}
.card {
  display: block;
  background: rgba(29,36,50,.5);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  overflow: hidden;
  transition: all 300ms cubic-bezier(.22,.61,.36,1);
  padding: 0;
}
.card:hover {
  border-color: rgba(142,169,201,.5);
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(0,0,0,.35);
}
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.card .thumb { aspect-ratio: 16 10; width: 100%; height: auto; object-fit: cover; border-bottom: 1px solid var(--line-soft); }
.card .thumb img, .card img.thumb { width: 100%; }
.card .ct {
  display: block;
  font-weight: 600;
  font-size: .95rem;
  color: var(--fg-0);
  letter-spacing: -0.01em;
  padding: .85rem 1.1rem .1rem;
}
.card .cl {
  display: block;
  font-size: .82rem;
  color: var(--fg-3);
  padding: .1rem 1.1rem .9rem;
}
.card .open {
  display: block;
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--accent);
  padding: 0 1.1rem .8rem;
}
.card .open::after { content: "→"; }
.card:hover .open { color: var(--accent-strong); }

.thumb-grid { text-decoration: none; }
.card { text-decoration: none; color: inherit; cursor: pointer; }

@media (max-width: 900px) { .thumb-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .thumb-grid { grid-template-columns: 1fr; } }

/* ── status chip ─────────────────────────────────────────────────── */
.status {
  display: inline-flex;
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bg-0);
  background: var(--accent);
  border-radius: 999px;
  padding: .3rem .8rem;
  margin: 0 0 .8rem;
}

/* ── spec lists ──────────────────────────────────────────────────── */
.spec ul { list-style: none; margin: 0; padding: 0; }
.spec li {
  padding: .3rem 0 .3rem 1.1rem;
  text-indent: -1.1rem;
  border-left: 2px solid var(--accent-deep);
  font-size: .93rem;
  color: var(--fg-2);
}
.spec li strong { color: var(--fg-0); }
.spec { margin: 1.4rem 0 0; }

/* ── plates (detail pages) ───────────────────────────────────────── */
.plate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 0;
}
.plate-grid .g2 { grid-template-columns: repeat(2, 1fr); }
.plate-grid.g2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .plate-grid { grid-template-columns: repeat(2, 1fr); } .plate-grid .g2 { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .plate-grid, .plate-grid.g2 { grid-template-columns: 1fr; } }

.plate {
  background: var(--bg-1);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: .5rem .5rem .1rem;
}
.plate img { width: 100%; border-radius: 6px; border: 1px solid var(--line); }
.plate figcaption { font-size: .76rem; color: var(--fg-3); margin-top: .4rem; padding: 0 .3rem; }

.plate-hero { margin: 0 auto 1.4rem; max-width: 26rem; }
.plate-hero img { width: 100%; }

.media { margin: 1.6rem 0 0; }
.media video {
  width: 100%; max-width: 34rem; height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-1);
  padding: .4rem;
}
.media .cap { font-size: .78rem; color: var(--fg-3); margin-top: .5rem; }

/* ── dev diaries ─────────────────────────────────────────────────── */
.diary {
  margin: 1.5rem 0 0;
  background: rgba(29,36,50,.5);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: .2rem 1rem .6rem;
}
.diary > summary {
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--accent);
  padding: .7rem .2rem;
  cursor: pointer;
}
.diary .diary-body { font-size: .9rem; color: var(--fg-2); padding: .3rem .4rem .3rem .1rem; }
.diary .diary-body p { margin: 0 0 .7rem; text-indent: 1.1rem; }
.diary .diary-body p:first-child { text-indent: 0; }
.diary[open] .diary-body { color: var(--fg-1); }

/* ── logo chips (work experience) ────────────────────────────────── */
.exp {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
  margin: 1.5rem 0 0;
}
.exp-card {
  background: rgba(29,36,50,.5);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 1.1rem 1.2rem 1rem;
}
.exp-card .chip {
  background: var(--chip);
  border-radius: 10px;
  padding: .7rem .9rem;
  margin: 0 0 .8rem;
}
.exp-card .chip img { width: 100%; max-width: 9rem; height: auto; margin: 0 auto; }
.exp-card .chip svg, .exp-card .chip img.chip-img { max-width: 9rem; }
.exp-card h2 { font-size: 1.05rem; margin: .2rem 0 .5rem; color: var(--fg-0); }
.exp-card .dates { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; color: var(--accent); margin: 0 0 .5rem; }
.exp-card p { font-size: .9rem; color: var(--fg-2); margin: .4rem 0; }
@media (max-width: 760px) { .exp { grid-template-columns: 1fr; } }

/* ── contact / footer ────────────────────────────────────────────── */
.contact { margin: 1.6rem 0 0; }
.contact ul { list-style: none; margin: 0; padding: 0; }
.contact li { font-size: .92rem; color: var(--fg-2); padding: .25rem 0; }

footer {
  max-width: 1140px;
  margin: 3.4rem auto 0;
  padding: 1.1rem var(--pad-x);
  border-top: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--fg-3);
  text-transform: uppercase;
}
footer a { color: var(--fg-2); }