/* Basic reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Colour and typography */
:root {
  --text: #111;
  --muted: #4660c6;
  --subtle: #666;
  --border: #e6e6e6;
  --bg: #f8f8f8;
  --card-bg: #ffffff;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Layout helpers */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Header and nav */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.site-header h1 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: var(--subtle);
  margin-bottom: 1rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}

.main-nav a:hover {
  text-decoration: underline;
}

/* Cards and sections */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
}

.card h2 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.card p + p {
  margin-top: 0.5rem;
}

.highlight {
  border-left: 4px solid var(--muted);
}

/* Theme list */
.theme-list {
  list-style: disc;
  padding-left: 1.25rem;
}

.theme-list li + li {
  margin-top: 0.25rem;
}

/* Button */
.button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  border: 1px solid var(--muted);
  text-decoration: none;
  font-weight: 500;
  color: #ffffff;
  background: var(--muted);
}

.button:hover {
  opacity: 0.9;
}

/* Portfolio grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.project-card a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.project-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.project-info {
  padding: 0.75rem 0.9rem 1rem;
}

.project-info h3 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.project-info p {
  color: var(--subtle);
  font-size: 0.9rem;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* Student page map */
.full-map {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.student-name {
  font-weight: 600;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.site-footer p {
  font-size: 0.9rem;
  color: var(--subtle);
}
.banner-wrapper {
  margin-top: 1rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.banner-image {
  width: 100%;
  max-width: 500px; 
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.banner-wrapper {
  display: flex;
  justify-content: flex-start; 
}