/* LBC Lab — navy & coral, matching original site identity */
:root {
  --navy: #0d2b5e;
  --navy-deep: #091f47;
  --coral: #e2897d;
  --coral-deep: #d1685a;
  --bg: #f4f4f5;
  --panel: #ffffff;
  --line: #e2e2e6;
  --text: #1c1c1e;
  --soft: #55565c;
}

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

body {
  font-family: "Inter", "Noto Sans KR", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

h1, h2, h3, .display {
  font-family: "Poppins", "Noto Sans KR", sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.01em;
}

a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

/* ---------- Header / Nav (navy bar) ---------- */
header.site {
  background: var(--navy);
  padding: 26px 0 22px;
}
.site-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  flex-wrap: wrap;
}
.brand {
  font-family: "Poppins", "Noto Sans KR", sans-serif;
  font-size: 2.35rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.22;
  letter-spacing: -0.01em;
  max-width: 560px;
}
.brand b { color: var(--coral); font-weight: 800; }
.brand:hover { text-decoration: none; }

nav.main { display: flex; gap: 12px; flex-wrap: wrap; }
nav.main a {
  padding: 8px 18px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.6);
  font-size: 0.95rem;
  font-weight: 600;
  color: #dfe6f5;
  background: transparent;
}
nav.main a:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
nav.main a[aria-current="page"] {
  background: #5b6fb0;
  border-color: #5b6fb0;
  color: #ffffff;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 76px 0 56px;
}
.hero .eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--coral-deep);
  font-weight: 700;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(1.9rem, 4.6vw, 2.7rem);
  max-width: 26ch;
  margin: 0 auto;
  color: var(--coral);
}
.hero h1 .k1 { color: var(--coral); }
.hero h1 .k2 { color: var(--soft); }
.hero p.lede {
  margin: 26px auto 0;
  max-width: 60ch;
  color: var(--text);
  font-size: 1.08rem;
}

/* ERP waveform — kept as a quiet signature, navy/coral */
.erp-wave { display: block; width: 100%; max-width: 700px; height: 80px; margin: 30px auto 0; }
.erp-wave path {
  fill: none;
  stroke: var(--coral);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-dasharray: 2400;
  stroke-dashoffset: 2400;
  animation: trace 3.2s ease-out forwards;
}
.erp-wave .baseline { stroke: var(--line); stroke-width: 1; stroke-dasharray: none; animation: none; stroke-dashoffset: 0; }
.erp-wave text { font-family: "Inter", sans-serif; font-size: 10px; fill: var(--soft); }

/* ---------- Eye-tracking fixation scanpath (hero signature) ---------- */
.gaze-plot { display: block; width: 100%; max-width: 680px; height: 150px; margin: 34px auto 0; }
.gaze-plot .sentence { font-family: "Poppins", "Noto Sans KR", sans-serif; font-weight: 600; fill: var(--navy); }
.gaze-plot .gloss { font-family: "Inter", sans-serif; font-style: italic; fill: var(--soft); font-size: 13px; }
.gaze-plot .saccade {
  fill: none;
  stroke: var(--coral);
  stroke-width: 1.6;
  stroke-linecap: round;
  opacity: 0.7;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  animation: gaze-trace 2.4s ease-out forwards;
}
.gaze-plot .fixation {
  fill: rgba(226, 137, 125, 0.22);
  stroke: var(--coral-deep);
  stroke-width: 1.3;
  opacity: 0;
  animation: fixation-in 0.4s ease-out forwards;
}
.gaze-plot .fixation-dot { fill: var(--coral-deep); }
.gaze-plot .fixation-num {
  font-family: "Inter", sans-serif;
  font-size: 10px;
  font-weight: 600;
  fill: var(--coral-deep);
}
@keyframes gaze-trace { to { stroke-dashoffset: 0; } }
@keyframes fixation-in { to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .gaze-plot .saccade { animation: none; stroke-dashoffset: 0; }
  .gaze-plot .fixation { animation: none; opacity: 1; }
}
@keyframes trace { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .erp-wave path { animation: none; stroke-dashoffset: 0; }
  html { scroll-behavior: auto; }
}

/* ---------- Sections ---------- */
section.block { padding: 50px 0; }
section.block + section.block { border-top: 1px solid var(--line); }
h2.section { font-size: 1.9rem; margin-bottom: 8px; text-align: center; color: var(--coral); }
.section-note { color: var(--soft); font-size: 0.98rem; margin-bottom: 30px; text-align: center; }

.tags {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 8px;
  max-width: 640px; margin-left: auto; margin-right: auto;
}
.tags span {
  border: 1px solid var(--navy);
  background: var(--panel);
  border-radius: 999px;
  padding: 7px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--navy);
}

/* ---------- Neural banner (bottom of homepage) ---------- */
.neural-banner {
  background: #000000;
  padding: 0;
  overflow: hidden;
  line-height: 0;
  position: relative;
}
.neural-banner .banner-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
  object-position: center 30%;
}
.neural-banner .banner-credit {
  position: absolute;
  right: 10px;
  bottom: 6px;
  font-size: 0.68rem;
  color: rgba(255,255,255,0.55);
  font-family: "Inter", sans-serif;
  line-height: 1.4;
}

/* ---------- PI card ---------- */
.pi {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 34px;
  align-items: start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 30px;
}
.pi img { width: 100%; border-radius: 10px; display: block; }
.pi h3 { font-size: 1.5rem; color: var(--navy); }
.pi .role { color: var(--coral-deep); font-weight: 700; margin: 6px 0 16px; font-size: 0.94rem; }
.pi p { color: var(--soft); font-size: 0.96rem; margin-bottom: 10px; }
.pi .links { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  border: 2px solid var(--navy);
  color: var(--navy);
  border-radius: 6px;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 700;
}
.btn:hover { background: var(--navy); color: #fff; text-decoration: none; }
.btn.solid { background: var(--coral); color: #fff; border-color: var(--coral); }
.btn.solid:hover { background: var(--coral-deep); border-color: var(--coral-deep); }

/* ---------- Members ---------- */
.members {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 22px;
}
.member {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  text-align: center;
  padding-bottom: 16px;
}
.member img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; display: block; margin-bottom: 12px; }
.member .name { font-weight: 700; color: var(--navy); }
.member .deg { font-size: 0.8rem; color: var(--coral-deep); letter-spacing: 0.06em; text-transform: uppercase; font-weight: 700; }

/* ---------- Publications ---------- */
.pub-list { list-style: none; }
.pub-list li {
  border-left: 4px solid var(--line);
  padding: 12px 0 12px 20px;
  margin-bottom: 14px;
  transition: border-color 0.2s;
}
.pub-list li:hover { border-color: var(--coral); }
.pub-list .authors { font-weight: 700; font-size: 0.96rem; color: var(--navy); }
.pub-list .year { color: var(--coral-deep); font-weight: 700; }
.pub-list .title { color: var(--soft); font-size: 0.95rem; }
.pub-list .venue { font-style: italic; }

/* ---------- Projects ---------- */
.proj {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 22px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.proj:last-child { border-bottom: none; }
.proj .period { color: var(--coral-deep); font-weight: 700; font-size: 0.92rem; }
.proj .agency { font-weight: 700; color: var(--navy); }
.proj p { color: var(--soft); font-size: 0.95rem; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--navy); }
.card .meta { color: var(--coral-deep); font-size: 0.88rem; font-weight: 700; margin-bottom: 10px; }
.card p, .card li { color: var(--soft); font-size: 0.94rem; }
.card ul { padding-left: 18px; margin-top: 6px; }
.card .links { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.contact-item { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 26px; }
.contact-item .label { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--coral-deep); font-weight: 700; margin-bottom: 6px; }
.contact-item .value { font-size: 1.1rem; font-weight: 700; color: var(--navy); }

/* ---------- Footer ---------- */
footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 0.88rem;
  color: var(--soft);
  background: var(--panel);
}
footer .site-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding: 0 32px; max-width: 1080px; margin: 0 auto; }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .pi { grid-template-columns: 1fr; }
  .pi img { max-width: 220px; }
  .proj { grid-template-columns: 1fr; gap: 4px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 36px; }
  .site-inner { justify-content: center; text-align: center; }
}

/* ---------- Homepage "About Us" hero block (screenshot match) ---------- */
.page-title {
  font-size: clamp(2rem, 5vw, 2.6rem);
  color: var(--coral);
  text-align: center;
}
.claim {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--soft);
  max-width: 46ch;
  margin: 26px auto 0;
}
.claim .k1 { color: var(--coral); }
.intro-line {
  font-size: 1.15rem;
  color: var(--navy);
  font-weight: 700;
  max-width: 560px;
  margin: 44px auto 0;
  text-align: left;
}
.area-list {
  max-width: 560px;
  margin: 14px auto 0;
  padding-left: 22px;
  text-align: left;
  color: var(--text);
  font-size: 1rem;
}
.area-list li { margin-bottom: 6px; }