@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');

:root {
  --accent:     #cc6b29;
  --strip-1:    #f8ddd0;
  --strip-2:    #f2c4b0;
  --nav-muted:  #5f6368;
  --text:       #202124;
  --border:     #e0e0e0;
}

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

body {
  font-family: 'Roboto', 'Google Sans', Arial, sans-serif;
  font-weight: 400;
  color: var(--text);
  line-height: 1.7;
  background: #ffffff;
}

/* ─── COVER STRIP ─────────────────────────────────────── */
.cover-strip {
  height: 8px;
  width: 100%;
  background: linear-gradient(90deg, var(--strip-1), var(--strip-2));
}

/* ─── NAV ─────────────────────────────────────────────── */
nav {
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 1.4rem 8%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2.5rem;
}

nav ul { list-style: none; display: flex; align-items: center; gap: 2.5rem; }

nav a {
  display: block;
  color: var(--nav-muted);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0;
  transition: color 0.15s;
}

nav a:hover { color: var(--text); }

nav a.active {
  color: var(--text);
  font-weight: 700;
}

/* ─── LAYOUT ──────────────────────────────────────────── */
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 3rem 8% 5rem;
}

/* ─── TYPOGRAPHY ──────────────────────────────────────── */
h1 {
  font-family: 'Roboto', 'Google Sans', Arial, sans-serif;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.6rem;
}

p { margin-bottom: 1rem; font-size: 1rem; }

a { color: var(--accent); text-decoration: underline; }
a:hover { opacity: 0.75; }

strong { font-weight: 700; color: var(--text); }

/* ─── SOCIAL BUTTONS ──────────────────────────────────── */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0.5rem 0 1.75rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent);
  border-radius: 20px;
  padding: 0.35rem 0.95rem;
  transition: background 0.15s, color 0.15s;
}

.social-links a:hover {
  background: var(--accent);
  color: #fff;
  opacity: 1;
}

/* ─── HOME: TWO-COLUMN CONTACT/NEWS ──────────────────── */
.two-col {
  display: flex;
  gap: 4rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.two-col > div { flex: 1 1 300px; }

/* ─── PLAIN BULLET LISTS ──────────────────────────────── */
.plain-list {
  list-style: square;
  margin: 0.75rem 0 1.5rem 1.4rem;
}

.plain-list li {
  margin-bottom: 0.6rem;
  line-height: 1.6;
}

.sub-note {
  margin: 0.15rem 0 0.6rem 1.4rem;
  line-height: 1.6;
}

.new-tag {
  color: var(--accent);
  font-weight: 700;
}

/* ─── TEACHING ────────────────────────────────────────── */
.institution-heading {
  font-family: 'Roboto', 'Google Sans', Arial, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 2rem;
  margin-bottom: 0.4rem;
}

.institution-heading:first-child { margin-top: 0; }

/* ─── HAMBURGER ───────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 640px) {
  .hamburger { display: flex; }
  .nav-inner { justify-content: space-between; padding: 1rem 6%; }

  nav ul {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }

  nav ul.open { display: flex; }

  nav a {
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    width: 100%;
  }

  .two-col { gap: 2rem; }
  .container { padding: 2rem 6% 3rem; }
  h1 { font-size: 1.7rem; }
}