/* ===========================================================
   Aguayo Lab — Oncovirology Laboratory
   Shared stylesheet
   =========================================================== */

:root {
  --bg: #0b1220;
  --bg-2: #0f1830;
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --ink: #16202e;
  --ink-soft: #4a5a6e;
  --muted: #7b8aa0;
  --line: #e3eaf3;

  --brand: #0f6b8a;       /* teal */
  --brand-deep: #0a4a63;
  --brand-2: #6c4cd1;     /* violet */
  --accent: #18b6a9;      /* aqua */
  --accent-warm: #f0763b; /* coral for highlights */

  --grad: linear-gradient(135deg, #0a4a63 0%, #0f6b8a 45%, #6c4cd1 100%);
  --grad-soft: linear-gradient(135deg, #e9f6f8 0%, #eef0fb 100%);

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(16, 40, 70, 0.10);
  --shadow-lg: 0 24px 60px rgba(16, 40, 70, 0.18);
  --maxw: 1140px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.2; color: var(--ink); margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }
a { color: var(--brand); text-decoration: none; transition: color .2s; }
a:hover { color: var(--brand-2); }
img { max-width: 100%; display: block; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section--soft { background: var(--surface-soft); }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--brand); margin-bottom: 14px;
}
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 720px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Navbar ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
.brand:hover { color: var(--ink); }
.brand__mark { width: 38px; height: 38px; flex: 0 0 auto; }
.brand__name { font-size: 1.05rem; line-height: 1.1; }
.brand__name small { display: block; font-size: .72rem; font-weight: 600; color: var(--muted); letter-spacing: .02em; }

.nav__links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav__links a {
  display: block; padding: 9px 14px; border-radius: 999px; font-weight: 600; font-size: .94rem;
  color: var(--ink-soft);
}
.nav__links a:hover { background: var(--surface-soft); color: var(--brand); }
.nav__links a.active { color: var(--brand); background: rgba(15,107,138,.10); }

.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: 8px;
  width: 44px; height: 44px;
}
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px auto; transition: .25s; }

@media (max-width: 820px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; gap: 4px;
    background: #fff; border-bottom: 1px solid var(--line); padding: 14px 24px 22px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .22s;
  }
  .nav__links a { padding: 12px 14px; border-radius: 10px; }
  .nav.open .nav__links { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav.open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 13px 24px; border-radius: 999px; font-weight: 700; font-size: .95rem;
  border: 1px solid transparent; transition: transform .15s, box-shadow .2s, background .2s;
}
.btn--primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px rgba(15,107,138,.30); }
.btn--primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(15,107,138,.40); }
.btn--ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.45); }
.btn--ghost:hover { color: #fff; background: rgba(255,255,255,.22); }
.btn--outline { background: #fff; color: var(--brand); border-color: var(--line); box-shadow: var(--shadow); }
.btn--outline:hover { color: var(--brand-2); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--bg); color: #fff; }
.hero::before {
  content: ""; position: absolute; inset: 0; background: var(--grad); opacity: .96;
}
.hero__glow {
  position: absolute; width: 620px; height: 620px; border-radius: 50%;
  background: radial-gradient(circle, rgba(24,182,169,.45), transparent 60%);
  top: -180px; right: -120px; filter: blur(20px);
}
.hero__inner {
  position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr;
  gap: 48px; align-items: center; padding: 96px 0 104px;
}
.hero h1 { color: #fff; }
.hero p { color: rgba(255,255,255,.82); font-size: 1.18rem; max-width: 560px; }
.hero .eyebrow { color: #9fe9e0; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero__art { position: relative; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 14px; border-radius: 999px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  font-size: .82rem; font-weight: 600; color: #eafcfa;
}
@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; padding: 68px 0 74px; }
  .hero__art { order: -1; max-width: 320px; }
}

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center; box-shadow: var(--shadow); }
.stat__num { font-size: 2.4rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat__label { font-size: .92rem; color: var(--ink-soft); font-weight: 600; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 24px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
  height: 100%;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); margin-bottom: 18px; color: var(--brand);
}
.card h3 { margin-bottom: .4em; }
.card p { color: var(--ink-soft); margin: 0; font-size: .98rem; }
.card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  font-size: .74rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase;
  color: var(--brand-deep); background: rgba(15,107,138,.09); padding: 4px 10px; border-radius: 999px;
}

/* ---------- Team ---------- */
.people { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
@media (max-width: 900px) { .people { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .people { grid-template-columns: repeat(2, 1fr); } }
.person { text-align: center; }
.person__avatar {
  width: 110px; height: 110px; border-radius: 50%; margin: 0 auto 14px;
  display: grid; place-items: center; font-size: 2rem; font-weight: 800; color: #fff;
  background: var(--grad); box-shadow: var(--shadow);
}
.person__photo-wrap {
  width: 110px; height: 110px; border-radius: 50%; overflow: hidden;
  margin: 0 auto 14px; flex-shrink: 0;
  border: 3px solid var(--accent); box-shadow: var(--shadow);
}
.person__photo {
  width: 110px; height: 110px; object-fit: cover; object-position: center top;
  display: block;
}
.person__name { font-weight: 700; font-size: 1.02rem; }
.person__role { color: var(--muted); font-size: .88rem; }
.person--lead .person__avatar { width: 140px; height: 140px; font-size: 2.6rem; border: 4px solid #fff; }

.alumni { display: flex; flex-wrap: wrap; gap: 10px; }
.alumni span {
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 16px; font-size: .9rem; color: var(--ink-soft); box-shadow: var(--shadow);
}

/* ---------- Publications ---------- */
.pub {
  display: flex; gap: 20px; padding: 22px 24px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 16px; transition: transform .15s;
}
.pub:hover { transform: translateY(-2px); }
.pub__year {
  flex: 0 0 auto; font-weight: 800; color: var(--brand); font-size: 1.05rem;
  width: 64px; padding-top: 2px;
}
.pub__body h3 { font-size: 1.05rem; margin-bottom: .3em; }
.pub__body h3 a { color: var(--ink); }
.pub__body h3 a:hover { color: var(--brand); }
.pub__meta { color: var(--muted); font-size: .9rem; margin: 0; }
.pub__journal { font-style: italic; color: var(--ink-soft); }
.pill {
  display: inline-block; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
  color: #fff; background: var(--accent); padding: 2px 9px; border-radius: 999px; margin-left: 8px; vertical-align: middle;
}
.pill--review { background: var(--brand-2); }

/* ---------- Projects timeline ---------- */
.proj { border-left: 3px solid var(--line); padding: 0 0 6px 26px; position: relative; margin-bottom: 28px; }
.proj::before {
  content: ""; position: absolute; left: -9px; top: 4px; width: 15px; height: 15px;
  border-radius: 50%; background: var(--brand); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--brand);
}
.proj--active::before { background: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.proj__dates { font-size: .82rem; font-weight: 700; color: var(--muted); letter-spacing: .03em; }
.proj h3 { font-size: 1.08rem; margin: 4px 0 6px; }
.proj__role { font-size: .86rem; color: var(--ink-soft); }
.badge-active {
  font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  color: #0a6b5f; background: rgba(24,182,169,.16); padding: 3px 10px; border-radius: 999px; margin-left: 8px;
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.contact-line { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.contact-line svg { flex: 0 0 auto; color: var(--brand); margin-top: 2px; }
.contact-line strong { display: block; color: var(--ink); }
.contact-line span { color: var(--ink-soft); font-size: .96rem; }
.map-embed { border: 0; width: 100%; height: 100%; min-height: 320px; border-radius: var(--radius); }

/* ---------- CTA band ---------- */
.cta {
  position: relative; overflow: hidden; border-radius: var(--radius);
  background: var(--grad); color: #fff; padding: 56px; text-align: center;
}
.cta h2 { color: #fff; }
.cta p { color: rgba(255,255,255,.85); max-width: 560px; margin: 0 auto 24px; }

/* ---------- Footer ---------- */
.footer { background: var(--bg); color: #c8d3e2; padding: 56px 0 32px; }
.footer a { color: #c8d3e2; }
.footer a:hover { color: #fff; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
.footer h4 { color: #fff; font-size: .92rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 8px; font-size: .94rem; }
.footer__brand { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; }
.footer__brand .brand__name { color: #fff; }
.footer__brand .brand__name small { color: #8da0ba; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; font-size: .85rem; color: #8da0ba; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr; } }

/* ---------- Page header ---------- */
.page-head { background: var(--bg); position: relative; overflow: hidden; color: #fff; padding: 70px 0 64px; }
.page-head::before { content: ""; position: absolute; inset: 0; background: var(--grad); opacity: .96; }
.page-head__glow { position: absolute; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(circle, rgba(108,76,209,.5), transparent 60%); top: -160px; left: -80px; }
.page-head .container { position: relative; z-index: 2; }
.page-head h1 { color: #fff; margin-bottom: .3em; }
.page-head p { color: rgba(255,255,255,.82); max-width: 640px; margin: 0; }
.page-head .eyebrow { color: #9fe9e0; }

/* ---------- Note box ---------- */
.note {
  background: #fff8f1; border: 1px solid #f6d8bf; border-left: 4px solid var(--accent-warm);
  border-radius: var(--radius-sm); padding: 16px 20px; font-size: .92rem; color: #8a5a32; margin-bottom: 28px;
}

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }