/* ── LAMMA Lab — main.css ── */

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

:root {
  --cream:   #F7F6F2;
  --navy:    #0F1923;
  --navy-2:  #162030;
  --amber:   #C67C2A;
  --amber-bg:#F5EBD9;
  --muted:   #7A7870;
  --mid:     #4A4840;
  --border:  #D8D6CF;
  --hover:   #EFEDE6;
  --navy-muted: #4A5A6A;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--cream);
  color: var(--navy);
  font-size: 16px;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--amber); }

/* ── NAV ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 0.5px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--cream);
  z-index: 100;
}

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-mark {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--navy);
}

.nav-logo-sub {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  color: var(--mid);
  letter-spacing: 0.02em;
}

.nav-links a:hover,
.nav-links a.active { color: var(--navy); }

.nav-cta {
  font-size: 12px;
  font-weight: 500;
  background: var(--navy);
  color: var(--cream);
  padding: 8px 18px;
  border-radius: 4px;
  letter-spacing: 0.03em;
}

.nav-cta:hover { background: #1e2f40; }

/* ── HERO ── */
.hero {
  position: relative;
  padding: 72px 40px 64px;
  overflow: hidden;
  min-height: 360px;
  display: flex;
  align-items: flex-start;
}

.ply-bg {
  position: absolute;
  top: 0; right: 0;
  width: 52%;
  height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 580px;
}

.hero-eyebrow {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 18px;
}

.hero-title {
  font-size: 44px;
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero-title strong { font-weight: 600; }
.hero-title .accent-line { color: var(--amber); }

.hero-sub {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.7;
  margin-top: 20px;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  align-items: center;
}

/* ── BUTTONS ── */
.btn-primary {
  background: var(--navy);
  color: var(--cream);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  display: inline-block;
}

.btn-primary:hover { background: #1e2f40; }

.btn-ghost {
  font-size: 13px;
  color: var(--mid);
  border-bottom: 0.5px solid var(--mid);
  padding-bottom: 1px;
}

.btn-ghost:hover { color: var(--navy); border-color: var(--navy); }

/* ── STATS STRIP ── */
.stats-strip {
  border-top: 0.5px solid var(--border);
  border-bottom: 0.5px solid var(--border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat {
  padding: 24px 40px;
  border-right: 0.5px solid var(--border);
}

.stat:last-child { border-right: none; }

.stat-num {
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -0.5px;
  font-family: 'DM Mono', monospace;
}

.stat-num span { color: var(--amber); }

.stat-label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ── SECTIONS ── */
.section,
.news-section { padding: 56px 40px; }

.news-section { border-top: 0.5px solid var(--border); }

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-link {
  font-size: 12px;
  color: var(--amber);
  font-weight: 500;
}

/* ── RESEARCH GRID ── */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 0.5px solid var(--border);
}

.research-grid--full { grid-template-columns: repeat(3, 1fr); }

.research-card {
  background: var(--cream);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.15s;
}

.research-card:hover { background: var(--hover); }

.rc-tag {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--amber);
  font-family: 'DM Mono', monospace;
}

.rc-title {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
}

.rc-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.rc-arrow {
  font-size: 14px;
  color: var(--amber);
  align-self: flex-end;
  margin-top: 8px;
}

/* ── PEOPLE SECTION ── */
.people-section {
  padding: 56px 40px;
  background: var(--navy);
}

.people-section .section-title { color: var(--navy-muted); }
.people-section .section-link { color: var(--amber); }

.people-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.people-grid--full {
  padding: 56px 40px 0;
  background: var(--cream);
  grid-template-columns: repeat(4, 1fr);
}

.person-card {
  background: var(--navy-2);
  border-radius: 6px;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.15s;
}

.person-card:hover { background: #1e2f40; }

.person-card--light {
  background: var(--cream);
  border: 0.5px solid var(--border);
}

.person-card--light:hover { background: var(--hover); }

.person-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--cream);
  margin-bottom: 4px;
  flex-shrink: 0;
}

.person-avatar--dark { background: var(--mid); }

.person-name {
  font-size: 13px;
  font-weight: 500;
  color: #E8E5DD;
}

.person-name--dark { color: var(--navy); }

.person-role {
  font-size: 11px;
  color: var(--navy-muted);
  line-height: 1.4;
}

.person-role--dark { color: var(--muted); }

.join-card {
  background: var(--navy) !important;
  border: 0.5px solid var(--amber) !important;
  cursor: pointer;
  justify-content: center;
}

.join-plus { font-size: 22px; color: var(--amber); font-weight: 300; }
.join-label { font-size: 12px; color: var(--amber); font-weight: 500; }
.join-sub { font-size: 11px; color: var(--navy-muted); line-height: 1.5; }

/* ── JOIN SECTION (people list page) ── */
.join-section {
  padding: 56px 40px;
  border-top: 0.5px solid var(--border);
  max-width: 600px;
}

.join-section h2 {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 16px;
}

.join-section p {
  font-size: 14px;
  color: var(--mid);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* ── NEWS ── */
.news-list { border-top: 0.5px solid var(--border); }

.news-item {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 0.5px solid var(--border);
  transition: background 0.1s;
}

.news-item:hover { background: var(--hover); padding-left: 8px; }

.news-date {
  font-size: 11px;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.04em;
}

.news-headline {
  font-size: 13px;
  color: var(--navy);
  line-height: 1.4;
}

.news-tag {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  background: var(--amber-bg);
  padding: 3px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

/* ── PUBLICATIONS ── */
.pub-list { border-top: 0.5px solid var(--border); }

.pub-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 0.5px solid var(--border);
}

.pub-year {
  font-size: 12px;
  font-family: 'DM Mono', monospace;
  color: var(--muted);
  padding-top: 3px;
}

.pub-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 6px;
}

.pub-authors {
  font-size: 12px;
  color: var(--mid);
  margin-bottom: 4px;
}

.pub-venue {
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 8px;
}

.pub-links { display: flex; gap: 12px; }

.pub-link {
  font-size: 11px;
  font-weight: 500;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.pub-link:hover { text-decoration: underline; }

/* ── SINGLE PAGE ── */
.single-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 40px;
}

.single-header {
  margin-bottom: 40px;
  border-bottom: 0.5px solid var(--border);
  padding-bottom: 32px;
}

.single-header h1 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.5px;
  margin-top: 12px;
  line-height: 1.2;
}

.single-sub {
  font-size: 16px;
  color: var(--mid);
  margin-top: 12px;
  line-height: 1.6;
}

.single-body {
  font-size: 15px;
  line-height: 1.75;
  color: var(--mid);
}

.single-body h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--navy);
  margin: 32px 0 12px;
}

.single-body p { margin-bottom: 16px; }

.single-body a { color: var(--amber); }
.single-body a:hover { text-decoration: underline; }

/* ── LIST PAGE ── */
.list-page { padding: 56px 40px; }

.list-header {
  margin-bottom: 40px;
  border-bottom: 0.5px solid var(--border);
  padding-bottom: 24px;
}

.list-header h1 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.5px;
}

.list-intro {
  font-size: 14px;
  color: var(--mid);
  margin-top: 12px;
  max-width: 600px;
  line-height: 1.7;
}

/* ── FOOTER ── */
.footer {
  padding: 32px 40px;
  border-top: 0.5px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.footer-info {
  font-size: 11px;
  color: var(--muted);
  text-align: right;
  line-height: 1.8;
}

.footer-info a {
  color: var(--muted);
}

.footer-info a:hover { color: var(--amber); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-links { display: none; }
  .hero { padding: 48px 20px 40px; }
  .hero-title { font-size: 30px; }
  .ply-bg { width: 100%; opacity: 0.3; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 16px 20px; }
  .section, .news-section, .list-page { padding: 40px 20px; }
  .research-grid, .research-grid--full { grid-template-columns: 1fr; }
  .people-section { padding: 40px 20px; }
  .people-grid, .people-grid--full { grid-template-columns: repeat(2, 1fr); }
  .news-item { grid-template-columns: 70px 1fr; }
  .news-tag { display: none; }
  .footer { flex-direction: column; gap: 16px; text-align: center; }
  .footer-info { text-align: center; }
  .pub-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ── ALUMNI ── */
.alumni-section {
  padding: 40px 40px 56px;
  border-top: 0.5px solid var(--border);
}

.alumni-section h2 {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.alumni-list {
  display: flex;
  flex-direction: column;
  border-top: 0.5px solid var(--border);
}

.alumni-item {
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 16px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 0.5px solid var(--border);
}

.alumni-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
}

.alumni-role {
  font-size: 12px;
  color: var(--muted);
}

.alumni-placement {
  font-size: 12px;
  color: var(--amber);
  font-weight: 500;
}

@media (max-width: 768px) {
  .alumni-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .alumni-section { padding: 32px 20px; }
}