:root {
  --bg: #08080a;
  --board: #0d0d10;
  --board-line: rgba(255, 255, 255, 0.06);
  --cell-top: #26262d;
  --cell-bottom: #15151a;
  --cell-seam: rgba(0, 0, 0, 0.55);
  --amber: #ffc24b;
  --amber-dim: #6f6346;
  --green: #46e08a;
  --red: #ff5d5d;
  --text: #e9e9ee;
  --muted: #82828f;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Inter", system-ui, sans-serif;
  --maxw: 940px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: radial-gradient(1100px 700px at 50% -15%, #14141b 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ---------- Atmosphere ---------- */
.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(120% 90% at 50% 30%, transparent 55%, rgba(0, 0, 0, 0.6) 100%);
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.3;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.025) 0px,
    rgba(255, 255, 255, 0.025) 1px,
    transparent 2px,
    transparent 4px
  );
  mix-blend-mode: overlay;
}

.wrap {
  position: relative;
  z-index: 3;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 24px;
  background: rgba(8, 8, 10, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--board-line);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 800;
  letter-spacing: 0.12em;
  font-size: 0.92rem;
}

.topbar__mark { color: var(--amber); }

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
}

.topbar__nav a { color: var(--muted); transition: color 0.2s ease; }
.topbar__nav a:hover { color: var(--text); }
.topbar__hub { color: var(--amber) !important; }

/* ---------- Flap cells (shared identity) ---------- */
.flap { display: inline-flex; flex-wrap: wrap; gap: 3px; }

.flap-cell {
  --w: 0.74em;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--w);
  padding: 0.16em 0.05em;
  background: linear-gradient(to bottom, var(--cell-top) 0%, var(--cell-top) 49.5%, var(--cell-bottom) 50.5%, var(--cell-bottom) 100%);
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), inset 0 -1px 0 rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.4);
  color: var(--amber);
  font-family: var(--mono);
  font-weight: 700;
  line-height: 1;
  overflow: hidden;
}

.flap-cell::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  transform: translateY(-50%);
  background: var(--cell-seam);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
}

.flap-cell--space { background: transparent; box-shadow: none; min-width: 0.34em; }
.flap-cell--space::after { display: none; }
.flap-cell.is-cycling { color: #d8c79a; }
.flap-cell.is-locked { animation: flapPop 0.22s ease; }

@keyframes flapPop {
  0% { transform: scaleY(0.55); filter: brightness(1.6); }
  60% { transform: scaleY(1.05); }
  100% { transform: scaleY(1); filter: brightness(1); }
}

/* ---------- Hero ---------- */
.hero { padding: 76px 0 56px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--amber-dim);
  margin-bottom: 26px;
}

.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero__title {
  font-size: clamp(2.1rem, 6.5vw, 3.6rem);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero__sub {
  max-width: 600px;
  font-size: 1.12rem;
  color: var(--muted);
  margin-bottom: 32px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 13px; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn--primary {
  background: var(--amber);
  color: #0a0c16;
  box-shadow: 0 10px 26px rgba(255, 194, 75, 0.22);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(255, 194, 75, 0.35); }

.btn--ghost {
  background: linear-gradient(180deg, #14141a, var(--board));
  border-color: var(--board-line);
  color: var(--text);
}
.btn--ghost:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, 0.2); }

/* ---------- Sections ---------- */
.section { padding: 44px 0; }

.section__title {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  letter-spacing: 0.04em;
  margin-bottom: 30px;
}

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  align-items: start;
}

.about__text p { color: var(--text); margin-bottom: 14px; }
.about__text p:last-child { color: var(--muted); }

.about__facts {
  display: grid;
  gap: 1px;
  background: var(--board-line);
  border: 1px solid var(--board-line);
  border-radius: 12px;
  overflow: hidden;
}

.fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--board);
}

.fact__k {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.fact__v { font-family: var(--mono); font-size: 0.82rem; text-align: right; }
.fact__v--ok { color: var(--green); }

/* ---------- Skills ---------- */
.skills { display: grid; gap: 24px; }
.skillgroup { display: grid; gap: 12px; }

.skillgroup__k {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--amber-dim);
}

.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 9px; }

.chip {
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 8px 14px;
  border-radius: 999px;
  background: linear-gradient(180deg, #14141a, var(--board));
  border: 1px solid var(--board-line);
  color: var(--text);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.chip:hover { border-color: var(--amber); color: var(--amber); }

/* ---------- Experience timetable ---------- */
.timetable {
  border: 1px solid var(--board-line);
  border-radius: 14px;
  background: linear-gradient(180deg, #101015, var(--board));
  overflow: hidden;
}

.trip {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 22px;
  padding: 24px 22px;
}

.trip + .trip { border-top: 1px solid var(--board-line); }

.trip__time {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.trip__arrow { color: var(--amber-dim); }
.trip__to { color: var(--muted); }

.trip__role { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }

.trip__org {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.trip__points { list-style: none; display: grid; gap: 10px; }

.trip__points li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.96rem;
}

.trip__points li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--amber-dim);
}

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.project {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--board-line);
  border-radius: 14px;
  background: linear-gradient(180deg, #101015, var(--board));
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.project:hover { border-color: rgba(255, 255, 255, 0.18); transform: translateY(-3px); }

.project__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.project__title { font-size: 1.06rem; font-weight: 700; }

.project__date {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--amber-dim);
  white-space: nowrap;
}

.project__desc { color: var(--muted); font-size: 0.95rem; margin-bottom: 16px; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; }

.tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 194, 75, 0.08);
  border: 1px solid rgba(255, 194, 75, 0.18);
  color: var(--amber);
}

.project__link {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--amber);
  transition: gap 0.2s ease;
}

.project__link:hover { text-shadow: 0 0 12px rgba(255, 194, 75, 0.4); }

/* ---------- Education ---------- */
.edu {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 22px;
  padding: 24px 22px;
  border: 1px solid var(--board-line);
  border-radius: 14px;
  background: linear-gradient(180deg, #101015, var(--board));
}

.edu__time { font-family: var(--mono); font-size: 0.78rem; color: var(--amber); }
.edu__degree { font-size: 1.08rem; font-weight: 700; margin-bottom: 4px; }
.edu__org { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); }

/* ---------- Contact ---------- */
.contact {
  position: relative;
  z-index: 3;
  margin-top: 40px;
  padding: 56px 0 40px;
  border-top: 1px solid var(--board-line);
  background: linear-gradient(180deg, transparent, rgba(255, 194, 75, 0.02));
}

.desk { list-style: none; display: grid; gap: 2px; margin-bottom: 36px; }

.desk li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--board-line);
}

.desk__k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; color: var(--muted); }
.desk__v { font-family: var(--mono); color: var(--amber); transition: text-shadow 0.2s ease; }
.desk__v:hover { text-shadow: 0 0 14px rgba(255, 194, 75, 0.5); }

.contact__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.clock__time { color: var(--amber); font-variant-numeric: tabular-nums; }
.dotsep { color: var(--amber-dim); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Station announcement (easter egg) ---------- */
.pa {
  position: fixed;
  left: 50%;
  top: 18px;
  z-index: 1100;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: min(580px, calc(100vw - 32px));
  padding: 14px 18px;
  font-family: var(--mono);
  background: rgba(13, 13, 16, 0.96);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 194, 75, 0.42);
  border-radius: 12px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5), 0 0 26px rgba(255, 194, 75, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -130%);
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.35s ease, visibility 0.35s;
  cursor: pointer;
}

.pa.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.pa__tag {
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--amber);
  white-space: nowrap;
  text-shadow: 0 0 12px rgba(255, 194, 75, 0.4);
}

.pa__text {
  font-size: 0.84rem;
  color: var(--text);
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .topbar__nav { gap: 14px; }
  .topbar__nav a:not(.topbar__hub) { display: none; }

  .about { grid-template-columns: 1fr; }
  .projects { grid-template-columns: 1fr; }

  .trip, .edu { grid-template-columns: 1fr; gap: 12px; }
  .trip__time, .edu__time { flex-direction: row; gap: 8px; align-items: center; }
}

@media (prefers-reduced-motion: reduce) {
  .flap-cell.is-locked { animation: none; }
  .dot { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}