/* ==========================================================================
   The Magnetic Universe Lab — site styles (light theme)
   Lopez-Rodriguez Group · University of South Carolina
   ========================================================================== */

:root {
  /* Surfaces — light, warm-neutral paper */
  --page:       #ffffff;
  --page-2:     #f5f7fa;
  --panel:      #ffffff;
  --panel-2:    #eef1f6;
  --line:       #dde3ec;
  --line-soft:  #e9edf3;

  /* Text */
  --text:       #161a22;
  --text-dim:   #4d5768;
  --text-faint: #68727f;

  /* Accents — USC garnet, with cooler support tones */
  --garnet:     #73000a;
  --garnet-lt:  #9c1622;
  --garnet-wash:#fbf1f2;
  --cyan:       #0b6e86;
  --gold:       #8a6410;

  --maxw: 1180px;
  --nav-h: 64px;

  --radius: 12px;
  --shadow: 0 2px 4px rgba(20, 28, 46, .04), 0 10px 28px rgba(20, 28, 46, .07);
  --shadow-sm: 0 1px 2px rgba(20, 28, 46, .05), 0 3px 10px rgba(20, 28, 46, .05);

  --font-display: "Saira Extra Condensed", "Oswald", "Helvetica Neue", sans-serif;
  --font-body: "Muli", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  color-scheme: light;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #08505f; text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.08;
  margin: 0 0 .5em;
  color: var(--text);
}

h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); text-transform: uppercase; }
h2 { font-size: clamp(2rem, 4.2vw, 3rem); text-transform: uppercase; }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }
h4 { font-size: 1.12rem; }

p { margin: 0 0 1.1em; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Navigation ---------- */

.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  min-height: var(--nav-h);
  display: flex; align-items: center; gap: 20px;
}

.nav__brand { display: flex; flex-direction: column; line-height: 1.15; padding: 10px 0; }
.nav__brand, .nav__brand:hover { color: var(--text); text-decoration: none; }
.nav__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.32rem; letter-spacing: .06em; text-transform: uppercase;
  white-space: nowrap; color: var(--garnet);
}
.nav__sub { font-size: .70rem; color: var(--text-faint); letter-spacing: .09em; text-transform: uppercase; }

.nav__toggle {
  margin-left: auto; display: none;
  background: none; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: 1.2rem; padding: 6px 11px; cursor: pointer;
}

.nav__links { margin-left: auto; display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }

.nav__links a {
  color: var(--text-dim); text-decoration: none;
  font-size: .80rem; font-weight: 800; letter-spacing: .10em; text-transform: uppercase;
  padding: 9px 12px; border-radius: 7px; white-space: nowrap;
}
.nav__links a:hover { color: var(--garnet); background: var(--panel-2); text-decoration: none; }
.nav__links a.is-active { color: #fff; background: var(--garnet); }

@media (max-width: 920px) {
  .nav__toggle { display: block; }
  .nav__links {
    display: none; width: 100%; flex-direction: column; align-items: stretch;
    gap: 0; padding: 8px 0 16px; margin-left: 0;
  }
  .nav__links.is-open { display: flex; }
  .nav__inner { flex-wrap: wrap; }
  .nav__links a { padding: 12px 10px; border-bottom: 1px solid var(--line); border-radius: 0; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 74vh;
  display: flex; align-items: center;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: var(--page-2);
}

.hero__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: .9;
  transform: scale(1.03);
}
/* Wash the image toward paper white so dark type stays readable. */
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg,
    rgba(255,255,255,.94) 0%,
    rgba(255,255,255,.72) 42%,
    rgba(255,255,255,.22) 100%);
}
.hero__inner { position: relative; z-index: 2; padding: 88px 0; width: 100%; }

.hero__eyebrow {
  font-family: var(--font-display); font-size: .92rem; font-weight: 700;
  letter-spacing: .30em; text-transform: uppercase; color: var(--garnet);
  margin-bottom: 18px;
}
.hero h1 { margin-bottom: 14px; }
.hero h1 .accent { color: var(--garnet); }
.hero__lede { font-size: 1.22rem; color: var(--text-dim); max-width: 62ch; }

/* Page header (interior pages) */
.pagehead {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 340px at 10% -40%, rgba(115,0,10,.10), transparent 70%),
    var(--page-2);
}
.pagehead h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-bottom: .2em; }
.pagehead p { color: var(--text-dim); max-width: 68ch; margin: 0; font-size: 1.08rem; }

/* ---------- Sections ---------- */

.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section--alt { background: var(--page-2); }

.section__eyebrow {
  font-family: var(--font-display); font-size: .84rem; font-weight: 700;
  letter-spacing: .26em; text-transform: uppercase; color: var(--garnet);
  margin-bottom: 10px;
}

.lede { font-size: 1.14rem; color: var(--text-dim); max-width: 70ch; }
.lede--wide { max-width: none; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  background: var(--garnet); color: #fff;
  font-family: var(--font-display); font-size: 1rem; font-weight: 700;
  letter-spacing: .10em; text-transform: uppercase;
  padding: 11px 22px; border-radius: 8px;
  border: 1px solid transparent;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.btn:hover {
  background: var(--garnet-lt); color: #fff; text-decoration: none;
  transform: translateY(-1px); box-shadow: var(--shadow-sm);
}

.btn--ghost { background: #fff; border-color: var(--line); color: var(--text); }
.btn--ghost:hover { background: var(--garnet-wash); border-color: var(--garnet); color: var(--garnet); }

.btn--sm { font-size: .84rem; padding: 8px 15px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

/* ---------- Cards & grids ---------- */

.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.card:hover { border-color: var(--garnet); transform: translateY(-3px); box-shadow: var(--shadow); }
.card__img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; background: var(--panel-2); }
.card__body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.card__body h3 { margin-bottom: .45em; }
.card__body p { color: var(--text-dim); font-size: .96rem; }
.card__foot { margin-top: auto; padding-top: 14px; }

.tag {
  display: inline-block;
  font-family: var(--font-display); font-size: .76rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold); background: #fdf7e8; border: 1px solid #eadcb8;
  padding: 3px 10px; border-radius: 999px; margin-bottom: 12px;
}
.tag--garnet { color: var(--garnet); background: var(--garnet-wash); border-color: #eccdd0; }
.tag--cyan { color: var(--cyan); background: #eaf6f9; border-color: #bfdfe7; }

/* ---------- Publication cards ---------- */

/* Figures are shown whole rather than cropped — a paper figure loses its
   meaning the moment you crop it. */
.card__img--fit {
  aspect-ratio: 16 / 10;
  width: 100%;
  object-fit: contain;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line-soft);
  padding: 10px;
}

.pub-ph {
  aspect-ratio: 16 / 10; width: 100%;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(135deg, var(--panel-2), #e2e8f1);
  display: flex; align-items: center; justify-content: center;
}
.pub-ph span {
  font-family: var(--font-display); font-weight: 700;
  font-size: 2.6rem; letter-spacing: .08em; color: var(--text-faint);
}

.card__body h3.pub-title { font-size: 1.12rem; line-height: 1.25; }
.course__coteach { font-size: .92rem; color: var(--text-dim); margin: -4px 0 10px; }
.card__body h3.pub-title a { color: inherit; }
.card__body h3.pub-title a:hover { color: var(--garnet); }
.card__body p.pub-ref {
  margin: 0; font-size: .88rem; font-weight: 600; color: var(--text);
  border-top: 1px solid var(--line); padding-top: 12px;
}

/* ---------- Feature rows (Research) ---------- */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 44px; align-items: center;
  padding: 56px 0;
}
.feature + .feature { border-top: 1px solid var(--line); }
.feature:nth-child(even) .feature__media { order: 2; }

.feature__media img {
  width: 100%; border-radius: var(--radius);
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.feature__cap { font-size: .82rem; color: var(--text-faint); margin-top: 10px; }
.feature__body h3 { margin-bottom: .4em; }
.feature__body p { color: var(--text-dim); }

@media (max-width: 860px) {
  .feature { grid-template-columns: 1fr; gap: 26px; padding: 40px 0; }
  .feature:nth-child(even) .feature__media { order: 0; }
}

/* ---------- Stats (Publications) ---------- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(165px, 1fr)); gap: 18px; }

.stat {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 20px; text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat__num {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 3.6rem); line-height: 1;
  color: var(--garnet);
}
.stat__label {
  font-size: .76rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-faint); margin-top: 10px; font-weight: 800;
}

.stamp { font-size: .84rem; color: var(--text-faint); margin-top: 16px; }
.stamp code { color: var(--text-dim); background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }

/* ---------- Team ---------- */

.people { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 28px; }

.person { text-align: center; }

.person__photo {
  position: relative;
  width: 168px; height: 168px; margin: 0 auto 16px;
  border-radius: 50%; overflow: hidden;
  border: 3px solid var(--line);
  background: var(--panel-2);
  display: flex; align-items: center; justify-content: center;
  transition: border-color .18s ease;
}
.person:hover .person__photo { border-color: var(--garnet); }

/* The photo layers over the initials; if it fails to load it removes itself
   and the initials underneath become visible. */
.person__photo img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
}

.person__initials {
  font-family: var(--font-display); font-weight: 700;
  font-size: 3.2rem; color: #fff; letter-spacing: .02em;
  user-select: none;
}

.person__name { font-family: var(--font-display); font-size: 1.34rem; font-weight: 700; margin: 0 0 2px; }
.person__role { font-size: .82rem; letter-spacing: .09em; text-transform: uppercase; color: var(--garnet); font-weight: 800; }
.person__note { font-size: .9rem; color: var(--text-dim); margin-top: 8px; }
.person__links { margin-top: 8px; font-size: .84rem; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.person--lead { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 34px; text-align: left; align-items: start; }
.person--lead .person__photo { margin: 0; width: 200px; height: 200px; }
.person--lead .person__links { justify-content: flex-start; }
@media (max-width: 620px) {
  .person--lead { grid-template-columns: 1fr; gap: 20px; text-align: center; }
  .person--lead .person__photo { margin: 0 auto; }
  .person--lead .person__links { justify-content: center; }
}

/* ---------- Tables (alumni, teaching) ---------- */

.table-wrap { overflow-x: auto; }

table.tbl { width: 100%; border-collapse: collapse; font-size: .96rem; min-width: 560px; }
table.tbl th {
  text-align: left; font-family: var(--font-display); font-size: .86rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--text-faint);
  border-bottom: 2px solid var(--line); padding: 12px 14px; font-weight: 700;
}
table.tbl td { padding: 13px 14px; border-bottom: 1px solid var(--line-soft); color: var(--text-dim); vertical-align: top; }
table.tbl td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
table.tbl tr:hover td { background: var(--panel-2); }

/* ---------- Teaching ---------- */

.term { margin-bottom: 44px; }
.term__head {
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
  border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 22px;
}
.term__head h3 { margin: 0; }
.badge {
  font-family: var(--font-display); font-size: .74rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  background: var(--garnet); color: #fff; padding: 3px 11px; border-radius: 999px;
}
.badge--muted { background: var(--panel-2); color: var(--text-faint); border: 1px solid var(--line); }

.course {
  background: var(--panel); border: 1px solid var(--line);
  border-left: 3px solid var(--garnet);
  border-radius: 10px; padding: 20px 22px; margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}
.course__code {
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 700;
  letter-spacing: .10em; color: var(--gold);
}
.course h4 { margin: 3px 0 8px; font-size: 1.25rem; }
.course p { color: var(--text-dim); font-size: .95rem; margin: 0 0 .6em; }
.course__meta { font-size: .85rem; color: var(--text-faint); }
.course--past { border-left-color: var(--line); background: var(--page-2); box-shadow: none; }
.course--past .course__code { color: var(--text-faint); }

/* ---------- Openings ---------- */

.opening {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.opening h3 { margin-bottom: .35em; }
.opening ul { color: var(--text-dim); padding-left: 1.2em; margin: 0 0 1em; }
.opening li { margin-bottom: .4em; }
.status {
  display: inline-block; font-family: var(--font-display);
  font-size: .76rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  padding: 3px 11px; border-radius: 999px; margin-bottom: 12px;
}
.status--open { background: #eaf6f9; color: var(--cyan); border: 1px solid #bfdfe7; }
.status--rolling { background: #fdf7e8; color: var(--gold); border: 1px solid #eadcb8; }
.status--closed { background: var(--garnet-wash); color: var(--garnet); border: 1px solid #eccdd0; }

/* ---------- Callout ---------- */

.callout {
  background: var(--garnet-wash);
  border: 1px solid #eccdd0;
  border-left: 3px solid var(--garnet);
  border-radius: 10px;
  padding: 22px 26px;
  margin: 28px 0;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- Program banner (SALSA / Baselines) ---------- */

.program {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  min-height: 320px;
  display: flex; align-items: stretch;
  background: var(--page-2);
  box-shadow: var(--shadow-sm);
}
.program__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center; opacity: .55;
}
.program::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.30) 0%, rgba(255,255,255,.93) 58%, #fff 100%);
}
/* Fixed top offset + buttons pinned to the bottom, so tags, titles, text and
   buttons line up across every card in the row. */
.program__body {
  position: relative; z-index: 2; padding: 150px 28px 28px; width: 100%;
  display: flex; flex-direction: column; align-items: flex-start;
}
.program__body .btn-row { margin-top: auto; padding-top: 6px; }
.program__partner {
  display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 12px; font-size: .9rem; color: var(--text-dim);
}
.program__partner img { width: 40px; height: auto; }
.program__partner:hover span { color: var(--garnet); }
.program__body h3 { margin-bottom: .3em; }
.program__body p { color: var(--text-dim); font-size: .96rem; margin-bottom: 1em; }

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  background: var(--page-2);
  padding: 48px 0 36px;
  font-size: .92rem; color: var(--text-dim);
}
.footer__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 30px; margin-bottom: 30px; }
.footer h4 {
  font-size: .84rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--text); margin-bottom: 12px;
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 7px; }
.footer a { color: var(--text-dim); }
.footer a:hover { color: var(--garnet); }
.footer__bottom {
  border-top: 1px solid var(--line); padding-top: 22px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--text-faint);
}

/* ---------- Utilities ---------- */

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 12px; }
.mb-2 { margin-bottom: 24px; }
.mb-3 { margin-bottom: 40px; }
.center { text-align: center; }
.muted { color: var(--text-faint); }
.small { font-size: .88rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}