/* wffp — RattryWu. hand-built, no framework. swiss/braun minimal, one orange accent.
   font sizes: exactly three — display / text / fine. */

:root {
  --bg: #ffffff;
  --ink: #141414;
  --mute: #6e6f6b;
  --line: #e7e6e1;
  --accent: #e8571a; /* the pen's o-ring orange */
  --max: 1180px;
  --pad: clamp(20px, 4vw, 48px);
  --fs-display: clamp(44px, 7vw, 88px);
  --fs-text: 21px;
  --fs-fine: 15px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, "Segoe UI", sans-serif;
  font-size: var(--fs-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- header ---------- */
.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 32px var(--pad);
  max-width: var(--max);
  margin: 0 auto;
}
.wordmark {
  font-weight: 700;
  font-size: var(--fs-text);
  letter-spacing: -0.02em;
}
.wordmark:hover { color: var(--accent); }
.nav { display: flex; gap: 36px; font-size: var(--fs-text); }
.nav a { color: var(--mute); }
.nav a:hover { color: var(--ink); }

/* ---------- section labels ---------- */
.label {
  font-size: var(--fs-text);
  font-weight: 700;
  color: var(--mute);
  margin-bottom: 28px;
}

/* ---------- projects ---------- */
.projects { padding: 56px 0 24px; }

.project-bar {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--line);
}
.project-bar:last-of-type { border-bottom: 1px solid var(--line); }

.project-name {
  font-size: var(--fs-display);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  display: inline-flex;
  align-items: baseline;
  gap: 18px;
}
.project-name .arrow {
  font-size: 0.35em;
  color: var(--accent);
  transition: transform 0.25s ease;
}
.project-bar:hover .arrow { transform: translateX(10px); }
.project-desc {
  margin-top: 24px;
  max-width: 46ch;
}
.project-meta {
  margin-top: 18px;
  font-size: var(--fs-fine);
  color: var(--mute);
}
.project-plate { overflow: hidden; border-radius: 6px; }
.project-plate img { width: 100%; transition: transform 0.6s ease; }
.project-bar:hover .project-plate img { transform: scale(1.03); }

/* ---------- contact ---------- */
.contact { padding: 120px 0 180px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  margin-top: 8px;
}
.contact h2 {
  font-size: var(--fs-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 32px;
}

form .row { margin-bottom: 22px; }
form label {
  display: block;
  font-size: var(--fs-fine);
  color: var(--mute);
  margin-bottom: 8px;
}
form input, form textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  font: inherit;
  font-size: var(--fs-text);
  padding: 8px 0;
  border-radius: 0;
}
form input:focus, form textarea:focus { outline: none; border-bottom-color: var(--accent); }
form textarea { resize: vertical; min-height: 120px; }

.btn {
  display: inline-block;
  margin-top: 8px;
  padding: 16px 38px;
  background: var(--ink);
  color: var(--bg);
  font-size: var(--fs-text);
  border: none;
  cursor: pointer;
  transition: background 0.25s ease;
}
.btn:hover { background: var(--accent); }

.contact-photo { border-radius: 6px; overflow: hidden; }
.contact-photo img { width: 100%; }
.contact-links {
  margin-top: 26px;
  font-size: var(--fs-fine);
  display: grid;
  gap: 8px;
}
.contact-links a { border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.contact-links a:hover { color: var(--accent); }
.contact-links .k { color: var(--mute); display: inline-block; width: 84px; }

/* ---------- visitor cities ---------- */
.visitors {
  margin-top: 44px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.visitors svg { width: 400px; max-width: 100%; height: auto; display: block; }
.visitors .v-cities {
  margin-top: 12px;
  font-size: var(--fs-fine);
  color: var(--mute);
  text-align: right;
  max-width: 400px;
  line-height: 1.7;
}

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 40px var(--pad) 140px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: var(--fs-fine);
  color: var(--mute);
  max-width: var(--max);
  margin: 0 auto;
}
.foot a:hover { color: var(--ink); }

/* ---------- project page ---------- */
.proj-head { padding: 28px 0 8px; }
.proj-head h1 {
  font-size: var(--fs-display);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.9;
}
.proj-head .sub { margin-top: 16px; color: var(--mute); max-width: 60ch; }

.prose { max-width: 68ch; padding: 48px 0; }
.prose h2 {
  font-size: var(--fs-text);
  font-weight: 700;
  color: var(--mute);
  margin: 48px 0 16px;
}
.prose h2:first-child { margin-top: 0; }
.prose p { margin-bottom: 16px; max-width: 66ch; }

.plate { margin: 32px 0; }
.plate img { width: 100%; border-radius: 6px; }
.plate figcaption {
  margin-top: 10px;
  font-size: var(--fs-fine);
  color: var(--mute);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.repo-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  font-size: var(--fs-text);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
}
.repo-link:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- changelog ---------- */
.log { border-top: 1px solid var(--line); padding-top: 18px; }
.log-date {
  font-size: var(--fs-fine);
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}
.log-line { margin-top: 4px; }
.log-link { color: var(--accent); }
.log-link:hover { border-bottom: 1px solid var(--accent); }
.log-items { list-style: none; margin-top: 12px; display: grid; gap: 6px; }
.log-items li {
  font-size: var(--fs-fine);
  color: var(--mute);
  padding-left: 16px;
  position: relative;
}
.log-items li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

.back {
  display: inline-block;
  font-size: var(--fs-text);
  color: var(--mute);
  padding: 20px 0 0;
}
.back:hover { color: var(--ink); }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .project-bar, .contact-grid { grid-template-columns: 1fr; }
  .project-bar { padding: 40px 0; }
  .contact { padding: 72px 0 120px; }
  .visitors { align-items: flex-start; }
  .visitors .v-cities { text-align: left; }
}