/* Muhamad Felemban — site styles.
   Replaces style.css, custom.css, publications.css, style_courses.css and
   kfupm-bs-400.css. */

:root {
  --ink: #1c1c1c;
  --muted: #6b6b6b;
  --rule: #d9d9d9;
  --accent: #12507a;
  --accent-soft: #eef4f8;
  --bg: #f4f4f2;
  --panel: #ffffff;
  --max: 1080px;
}

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  background: var(--panel);
  border: 1px solid var(--rule);
}

/* Page frame */

.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2rem;
}

.site-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  padding: 2rem 0 1.25rem;
}

.site-title h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-title h1 a {
  color: var(--ink);
}

.site-title h1 a:hover {
  text-decoration: none;
  color: var(--accent);
}

.site-section {
  margin: 0;
  font-size: 1.25rem;
  color: var(--muted);
  font-weight: 400;
}

.site-section::before {
  content: "/ ";
}

/* Nav */

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.75rem;
}

.site-nav a {
  display: inline-block;
  padding: 0.25rem 0;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--accent);
  text-decoration: none;
  border-bottom-color: var(--rule);
}

.site-nav a.current {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-external a {
  font-weight: 400;
}

/* Body layout */

.site-body.has-sidebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 3rem;
  align-items: start;
}

.content {
  min-width: 0;
}

.content > :first-child {
  margin-top: 0;
}

.content h2 {
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.35rem;
  font-size: 1.3rem;
  border-bottom: 1px solid var(--rule);
}

.content p {
  margin: 0 0 1rem;
}

.lede {
  color: var(--muted);
  font-size: 0.95rem;
}

.subtle {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.9rem;
}

/* Sidebar */

.sidebar {
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-size: 0.9rem;
  position: sticky;
  top: 1rem;
}

.portrait {
  display: block;
  width: 100%;
  max-width: 180px;
  margin: 0 auto 1rem;
  border-radius: 4px;
}

.sidebar h3 {
  margin: 1.1rem 0 0.2rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.sidebar h3:first-of-type {
  margin-top: 0;
}

.sidebar p {
  margin: 0;
}

/* News */

.news {
  margin: 0;
}

.news dt {
  margin-top: 1.25rem;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.news-note {
  display: block;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--muted);
}

.news dd {
  margin: 0.25rem 0 0;
  padding: 0 0 1.25rem;
  border-bottom: 1px solid var(--rule);
}

.news dd:last-child {
  border-bottom: 0;
}

/* Publications */

.pub-list {
  margin: 0;
  padding-left: 1.5rem;
}

.pub {
  margin-bottom: 0.9rem;
}

.pub-authors {
  color: var(--ink);
}

.pub-venue {
  color: var(--muted);
}

.pub-award {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.05rem 0.5rem;
  background: #fdf3d8;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #7a5c12;
  white-space: nowrap;
}

/* CV link */

.cv-link {
  margin: 1.25rem 0 0;
}

.cv-link a {
  display: block;
  padding: 0.5rem;
  text-align: center;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: 4px;
}

.cv-link a:hover {
  text-decoration: none;
  filter: brightness(1.15);
}

/* Grants and service roles */

.grants,
.roles {
  list-style: none;
  margin: 0;
  padding: 0;
}

.grants li,
.roles li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--rule);
}

.grant-title,
.role-title {
  display: block;
  font-weight: 600;
}

.grant-meta,
.role-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Tables */

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

table.people {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.people th,
table.people td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

table.people th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  white-space: nowrap;
}

table.people tbody tr:hover {
  background: var(--accent-soft);
}

/* Courses */

.courses {
  list-style: none;
  margin: 0;
  padding: 0;
}

.courses > li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
}

.course-code {
  margin: 0 0 0.35rem;
  padding: 0;
  border: 0;
  font-size: 1.05rem;
}

.course-title {
  font-weight: 400;
  color: var(--muted);
}

.terms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.terms li {
  padding: 0.15rem 0.6rem;
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* Research */

.group-name {
  font-size: 1.35rem;
  font-weight: 700;
  text-align: center;
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
}

.thrusts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.thrusts li {
  padding: 0.9rem;
  text-align: center;
  font-weight: 600;
  background: var(--accent-soft);
  border-radius: 6px;
}

.project-cards {
  display: grid;
  gap: 1.5rem;
}

.project-card {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
}

.project-card-figure {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: #fff;
  border-bottom: 1px solid var(--rule);
}

.project-card-figure img {
  max-width: 100%;
  max-height: 280px;
}

.project-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.project-card-body h3 {
  margin: 0 0 0.5rem;
}

.project-card-body h4 {
  margin: 1rem 0 0.35rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.project-objective {
  margin: 0;
}

.project-papers {
  margin: 0;
  padding-left: 1.25rem;
}

.project-papers li {
  margin-bottom: 0.5rem;
}

.paper-meta {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
}

.project-people {
  margin: 1rem 0 0;
  font-size: 0.9rem;
}

.projects {
  padding-left: 1.5rem;
}

.projects li {
  margin-bottom: 0.75rem;
}

.project-meta {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Services */

.talks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.talks li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
}

.talk-title {
  display: block;
  font-weight: 600;
}

.talk-meta,
.talk-media {
  font-size: 0.88rem;
  color: var(--muted);
}

/* Footer */

.site-footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Small screens */

@media (max-width: 800px) {
  .site-body.has-sidebar {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .sidebar {
    position: static;
    order: -1;
  }

  .site-title h1 {
    font-size: 1.6rem;
  }
}