/* Ovidiu-Andrei Schipor — research homepage (direction O1 "Lab") */

:root {
  --ink: #0e1b2a;
  --text: #24323f;
  --muted: #5b6b7c;
  --line: #e2e8ee;
  --bg: #f5f7f9;
  --card: #ffffff;
  --navy: #0a2540;
  --navy-2: #0d2f52;
  --sky: #9cc9f2;
  --sky-soft: #cfe5fa;
  --teal: #0f9d8a;
  --teal-dark: #0b6e61;
  --teal-soft: #e2f5f1;
  --amber-soft: #fdf1dc;
  --amber-dark: #7a4a06;
  --radius: 10px;
  --wrap: 1080px;
  --nav-h: 56px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef3f8;
    --text: #d3dde7;
    --muted: #9aabbc;
    --line: #233446;
    --bg: #0b1622;
    --card: #102031;
    --teal: #3cc7b2;
    --teal-dark: #7fe0d0;
    --teal-soft: #12352f;
    --amber-soft: #3a2a0f;
    --amber-dark: #f5c97a;
  }
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

img { max-width: 100%; height: auto; }

a { color: var(--teal-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--teal); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3 { color: var(--ink); line-height: 1.25; margin: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 10; background: #fff; color: #000; padding: 8px 12px; }

/* ---------- Top bar + hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  color: var(--sky-soft);
  background-color: var(--navy);
  background-image: radial-gradient(rgba(156, 201, 242, 0.16) 1px, transparent 1.2px);
  background-size: 22px 22px;
}

.hero a { color: #fff; }

/* sticky top menu, always visible */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navy);
  border-bottom: 1px solid rgba(156, 201, 242, 0.14);
  box-shadow: 0 6px 16px -10px rgba(4, 16, 30, 0.6);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--nav-h);
  padding: 8px 0;
}

/* anchor targets land below the sticky menu */
[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

.brand {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: #fff;
  white-space: nowrap;
}
.brand span { color: var(--teal); }

.nav { display: flex; flex-wrap: wrap; gap: 4px 6px; margin: 0; padding: 0; list-style: none; }
.nav a {
  display: block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 14px;
  text-decoration: none;
  color: var(--sky-soft);
}
.nav a:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.nav a[aria-current="page"] { background: rgba(60, 199, 178, 0.18); color: #fff; }
.nav a.lang {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  border: 1px solid rgba(156, 201, 242, 0.45);
  margin-left: 4px;
}
.nav a.lang:hover { border-color: #5fd6c3; }

.hero-body {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 36px;
  align-items: center;
  padding: 40px 0 56px;
}

.portrait {
  width: 180px;
  height: 180px;
  object-fit: cover;
  object-position: 50% 20%;
  border-radius: 18px;
  border: 3px solid rgba(60, 199, 178, 0.6);
  background: var(--navy-2);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 8px;
}
.hero .eyebrow { color: #5fd6c3; }

.hero h1 { color: #fff; font-size: clamp(30px, 4.4vw, 44px); letter-spacing: -0.01em; }

.role { margin: 10px 0 0; font-size: 18px; color: #fff; }
.affil { margin: 4px 0 0; font-size: 15px; color: var(--sky); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 0; padding: 0; list-style: none; }
.chips a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid rgba(156, 201, 242, 0.35);
  border-radius: 999px;
  font-size: 13px;
  text-decoration: none;
  color: var(--sky-soft);
  background: var(--navy-2);
}
.chips a:hover { border-color: #5fd6c3; color: #fff; }
.chips svg { width: 14px; height: 14px; }

/* decorative gesture stroke (HCI motif) */
.gesture {
  position: absolute;
  right: -40px;
  top: 40px;
  width: 520px;
  height: 320px;
  z-index: 1;
  opacity: 0.55;
  pointer-events: none;
}

.hero-compact .hero-body { grid-template-columns: minmax(0, 1fr); padding: 32px 0 40px; }
.hero-compact h1 { font-size: clamp(26px, 3.6vw, 36px); }

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

main { display: block; }

.section { padding: 56px 0 8px; }
.section:last-of-type { padding-bottom: 56px; }

.section-head { margin-bottom: 24px; }
.section-head h2 { font-size: 26px; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 720px; }

.lead { font-size: 18px; color: var(--text); max-width: 820px; margin: 0; }

/* stats strip */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.stats li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stats b { display: block; font-size: 26px; color: var(--ink); font-weight: 650; line-height: 1.1; }
.stats span { font-size: 13px; color: var(--muted); }

/* research themes */
.themes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

.theme {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
}
.theme-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--teal-soft);
  color: var(--teal-dark);
  margin-bottom: 14px;
}
.theme-icon svg { width: 24px; height: 24px; }
.theme h3 { font-size: 18px; }
.theme p { margin: 8px 0 12px; font-size: 15px; }
.theme .tags { margin-top: auto; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tags li {
  font-family: var(--mono);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--muted);
}

.theme-earlier { background: transparent; border-style: dashed; }
.theme-earlier .theme-icon { background: var(--amber-soft); color: var(--amber-dark); }

/* publications */
.pubs { list-style: none; margin: 0; padding: 0; }
.pub {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.pub:first-child { border-top: 0; }
.pub-year { font-family: var(--mono); font-size: 14px; color: var(--muted); padding-top: 2px; }
.pub-title { font-weight: 600; color: var(--ink); }
.pub-title a { color: inherit; text-decoration: none; }
.pub-title a:hover { color: var(--teal-dark); text-decoration: underline; }
.pub-authors { font-size: 14.5px; color: var(--muted); margin-top: 2px; }
.pub-authors b { color: var(--text); font-weight: 600; }
.pub-venue { font-size: 14.5px; font-style: italic; margin-top: 2px; }
.pub-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; align-items: center; }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  padding: 0 7px;
  border-radius: 5px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  white-space: nowrap;
}
.badge-q1 { background: #0a2540; color: #fff; }
.badge-award { background: var(--amber-soft); color: var(--amber-dark); }
.badge-type { background: var(--bg); color: var(--muted); border: 1px solid var(--line); }

@media (prefers-color-scheme: dark) {
  .badge-q1 { background: var(--sky-soft); color: #0a2540; }
}

.linkline { display: inline-flex; align-items: center; gap: 4px; font-size: 13.5px; }
.more { margin: 20px 0 0; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--teal);
  color: var(--teal-dark);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  background: transparent;
}
.btn:hover { background: var(--teal-soft); color: var(--teal-dark); }

/* projects timeline */
.timeline { list-style: none; margin: 0; padding: 0 0 0 22px; border-left: 2px solid var(--line); }
.tl-item { position: relative; padding: 0 0 26px 18px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--card);
  border: 3px solid var(--teal);
}
.tl-item.past::before { border-color: var(--line); }
.tl-years { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.tl-item h3 { font-size: 17px; margin-top: 2px; }
.tl-item h3 a { color: inherit; text-decoration: none; }
.tl-item h3 a:hover { color: var(--teal-dark); text-decoration: underline; }
.tl-item p { margin: 6px 0 0; font-size: 15px; }
.tl-fund { font-size: 13.5px; color: var(--muted); margin-top: 4px; }

/* two-column info blocks */
.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
}
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card ul { margin: 0; padding-left: 18px; }
.card li { margin: 4px 0; }
.card address { font-style: normal; }
.small { font-size: 14px; color: var(--muted); }

/* publications page tools */
.toolbar {
  position: sticky;
  top: var(--nav-h);
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.filter { display: flex; flex-wrap: wrap; gap: 6px; }
.filter button {
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}
.filter button[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.toolbar input[type="search"] {
  flex: 1 1 220px;
  min-width: 0;
  font: inherit;
  font-size: 14px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
}
.count { font-size: 13px; color: var(--muted); font-family: var(--mono); }

.year-group h2 {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  margin: 28px 0 4px;
  letter-spacing: 0.04em;
}
.year-group .pub { grid-template-columns: 110px minmax(0, 1fr); }

/* footer */
.footer {
  background: var(--navy);
  color: var(--sky);
  padding: 32px 0;
  font-size: 14px;
}
.footer a { color: #fff; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; }
.footer p { margin: 2px 0; }

/* ---------- Responsive ---------- */

@media (max-width: 1240px) {
  .gesture { opacity: 0.35; }
}

@media (max-width: 1000px) {
  .themes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .gesture { opacity: 0.25; right: -200px; }
  .cols { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .themes { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  /* phone: one compact row that scrolls sideways; language button first, name hidden (it is in the page title) */
  :root { --nav-h: 50px; }
  .topbar { gap: 0; padding: 7px 0; }
  .brand { display: none; }
  .nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    gap: 4px;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav { -webkit-mask-image: linear-gradient(to right, #000 82%, transparent); mask-image: linear-gradient(to right, #000 82%, transparent); padding-right: 28px; }
  .nav li:has(> a.lang) { order: -1; }
  .nav a { padding: 6px 10px; white-space: nowrap; }
  .nav a.lang { margin-left: 0; margin-right: 4px; }
  .hero-body { grid-template-columns: minmax(0, 1fr); gap: 20px; padding: 28px 0 40px; }
  .portrait { width: 132px; height: 132px; }
  .pub, .year-group .pub { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .section { padding-top: 44px; }
  .lead { font-size: 17px; }
}

@media print {
  .hero { background: none; color: #000; }
  .hero h1, .role, .affil, .hero a { color: #000; }
  .gesture, .navbar, .toolbar, .chips { display: none; }
  .footer { background: none; color: #000; }
}