/* Rida Hameed — academic website */
:root {
  --ink: #1f2a2e;
  --muted: #5b6b70;
  --accent: #1e6f5c;       /* deep green — environmental economics */
  --accent-dark: #14503f;
  --accent-light: #e8f2ee;
  --border: #e3e8e8;
  --bg: #fdfdfc;
  --card: #ffffff;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16.5px;
}

h1, h2, h3, h4, .site-name { font-family: 'Lora', Georgia, serif; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

.container { max-width: 900px; margin: 0 auto; padding: 0 1.4rem; }

/* ---------- Header / nav ---------- */
header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding: 1rem 0;
}

.site-name {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
}
.site-name:hover { text-decoration: none; color: var(--accent); }

nav { display: flex; flex-wrap: wrap; gap: 0.25rem; }

nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
}
nav a:hover { color: var(--accent); background: var(--accent-light); text-decoration: none; }
nav a.active { color: var(--accent-dark); background: var(--accent-light); }

/* ---------- Page layout ---------- */
main { padding: 2.75rem 0 3.5rem; }

.page-title {
  font-size: 1.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.page-subtitle { color: var(--muted); margin-bottom: 2.2rem; }

section { margin-bottom: 2.6rem; }

h2.section-heading {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent-dark);
  border-bottom: 2px solid var(--accent-light);
  padding-bottom: 0.4rem;
  margin-bottom: 1.1rem;
}

/* ---------- About page ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.portrait {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.portrait-placeholder {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 10px;
  background: linear-gradient(160deg, var(--accent-light), #d3e6df);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Lora', Georgia, serif;
  font-size: 3.2rem;
  color: var(--accent);
  border: 1px solid var(--border);
}

.contact-block {
  margin-top: 1.1rem;
  font-size: 0.92rem;
  color: var(--muted);
}
.contact-block p { margin-bottom: 0.3rem; }

.social-links { margin-top: 0.8rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.social-links a {
  font-size: 0.85rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--card);
}
.social-links a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.jm-banner {
  background: var(--accent-light);
  border-left: 4px solid var(--accent);
  padding: 0.85rem 1.1rem;
  border-radius: 0 8px 8px 0;
  margin: 1.3rem 0;
  font-size: 0.97rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.3rem 1.5rem;
  margin-bottom: 1.1rem;
}

.card .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.55rem;
}

.card h3 { font-size: 1.12rem; margin-bottom: 0.45rem; }
.card p { font-size: 0.95rem; color: var(--muted); }
.card .links { margin-top: 0.7rem; font-size: 0.9rem; }
.card .links a { margin-right: 1.1rem; font-weight: 500; }

/* ---------- Lists (research, teaching, writing) ---------- */
.entry { margin-bottom: 1.35rem; }
.entry h3 { font-size: 1.08rem; margin-bottom: 0.2rem; }
.entry .meta { font-size: 0.88rem; color: var(--muted); }
.entry .desc { font-size: 0.95rem; margin-top: 0.3rem; }
.entry .coauthors { font-style: italic; }

.pub-list li, .plain-list li { margin-bottom: 0.85rem; font-size: 0.96rem; }
.pub-list, .plain-list { padding-left: 1.2rem; }

.teach-role { margin-bottom: 1.5rem; }
.teach-role h3 { font-size: 1.06rem; }
.teach-role .when { font-size: 0.85rem; color: var(--muted); font-weight: 400; }
.teach-role ul { padding-left: 1.2rem; margin-top: 0.3rem; font-size: 0.95rem; color: var(--muted); }

.writing-item { display: flex; justify-content: space-between; gap: 1rem; padding: 0.6rem 0; border-bottom: 1px solid var(--border); font-size: 0.96rem; }
.writing-item .year { color: var(--muted); white-space: nowrap; font-size: 0.88rem; }

/* ---------- CV page ---------- */
.cv-frame {
  width: 100%;
  height: 82vh;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
}
.btn:hover { background: var(--accent-dark); color: #fff; text-decoration: none; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- Mobile ---------- */
@media (max-width: 700px) {
  .about-grid { grid-template-columns: 1fr; }
  .portrait, .portrait-placeholder { max-width: 240px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
}