body.dark {
  background: #0d1117;
  color: #c9d1d9;
  font-family: 'Inter', sans-serif;
  margin: 0;
  padding: 0;
}

.dashboard-container {
  max-width: 1000px;
  margin: 80px auto;
  padding: 20px;
}

input#searchInput {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  background-color: #161b22;
  border: 1px solid #30363d;
  color: #c9d1d9;
  border-radius: 8px;
  margin: 20px 0;
}

.students-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.student-card {
  background-color: #161b22;
  border: 1px solid #30363d;
  border-left: 5px solid #58a6ff;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  transition: transform 0.3s ease;
}

.student-card:hover {
  transform: scale(1.05);
}

.student-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 10px;
  border: 2px solid #21262d;
}

.top-bar {
  position: fixed;
  top: 0;
  right: 0;
  padding: 16px;
  background-color: #161b22;
  width: 100%;
  display: flex;
  justify-content: flex-end;
  z-index: 1000;
  border-bottom: 1px solid #30363d;
}

.top-bar button {
  background-color: #21262d;
  color: #c9d1d9;
  border: none;
  padding: 10px 16px;
  font-family: monospace;
  cursor: pointer;
  border-radius: 6px;
}

.top-bar button:hover {
  background-color: #30363d;
}

.main-header {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  text-align: center;
  font-weight: bold;
  margin-top: 20px;
}

.subtitle {
  text-align: center;
  color: #8b949e;
  margin-bottom: 30px;
}

.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
}
.modal.hidden {
  display: none;
}
.modal-content {
  background-color: #161b22;
  padding: 20px;
  border-radius: 8px;
  max-width: 700px;
  width: 90%;
  color: #c9d1d9;
  font-family: 'JetBrains Mono', monospace;
  border: 1px solid #30363d;
  position: relative;
}
.close-btn {
  position: absolute;
  top: 10px; right: 20px;
  font-size: 24px;
  cursor: pointer;
}
.modal-photo-container {
  text-align: center;
  margin-bottom: 20px;
}
.modal-photo-container img {
  width: 140px;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid #30363d;
}
.modal-table {
  width: 100%;
  border-collapse: collapse;
}
.modal-table td {
  padding: 6px 8px;
  border-bottom: 1px solid #2f3540;
}