/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background-color: var(--usc-cardinal);
  color: var(--usc-gold);
  padding: 30px 20px;
  border-radius: 8px;
  margin-bottom: 30px;
  text-align: center;
}

header h1 {
  font-size: 2em;
}

/* Color variables and View Management */
:root {
  /* USC color palette */
  --usc-cardinal: #990000; /* primary */
  --usc-gold: #ffcc00; /* accent */
  --page-bg: #faf6f6; /* very light warm background */
  --bg: #ffffff; /* card background */
  --text-color: #222222;
  --muted: #666666;
  --accent-dark: #6f1a1a;
  --usc-cardinal-05: rgba(153, 0, 0, 0.04);
  --usc-cardinal-10: rgba(153, 0, 0, 0.08);
}

.view {
  background-color: var(--bg);
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.hidden {
  display: none;
}

/* Directory View Styles */
#directory-view h2 {
  color: var(--usc-cardinal);
  margin-bottom: 20px;
  font-size: 1.8em;
}

/* Filter and Sort Controls */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
  padding: 20px;
  background-color: var(--usc-cardinal-05);
  border-radius: 8px;
  border: 1px solid var(--usc-cardinal-10);
}

.filter-group,
.sort-group,
.search-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 200px;
}

.controls label {
  color: var(--usc-cardinal);
  font-weight: 600;
  font-size: 0.9em;
}

.controls select,
.controls input[type="text"] {
  padding: 10px 12px;
  border: 2px solid var(--usc-cardinal-10);
  border-radius: 6px;
  background-color: var(--bg);
  color: var(--text-color);
  font-size: 1em;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.controls select:focus,
.controls input[type="text"]:focus {
  outline: none;
  border-color: var(--usc-cardinal);
}

.controls select:hover,
.controls input[type="text"]:hover {
  border-color: var(--usc-cardinal);
}

.controls input[type="text"]::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.directory-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.directory-item {
  background-color: var(--bg);
  border: 2px solid var(--usc-cardinal-05);
  border-radius: 8px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.directory-item:hover {
  background-color: var(--usc-cardinal-05);
  border-color: var(--usc-cardinal);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.directory-item h3 {
  color: var(--usc-cardinal);
  margin-bottom: 8px;
  font-size: 1.3em;
}

.directory-item .role {
  color: var(--muted);
  font-size: 0.9em;
  font-style: italic;
}

.semester-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: var(--usc-gold);
  color: var(--usc-cardinal);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Detail View Styles */
.back-button {
  background-color: var(--usc-cardinal);
  color: var(--bg);
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1em;
  margin-bottom: 30px;
  transition: background-color 0.3s ease;
}

.back-button:hover {
  background-color: var(--accent-dark);
}

.detail-content {
  max-width: 700px;
}

.detail-content h2 {
  color: var(--usc-cardinal);
  font-size: 2em;
  margin-bottom: 10px;
}

.detail-content .role {
  color: var(--muted);
  font-size: 1.1em;
  font-style: italic;
  margin-bottom: 20px;
  display: block;
}

.detail-content .bio-section {
  margin-top: 30px;
}

.detail-content .bio-section h3 {
  color: var(--usc-cardinal);
  margin-bottom: 10px;
  font-size: 1.4em;
}

.detail-content .bio-section p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 15px;
}

.detail-content .interests {
  margin-top: 20px;
}

.detail-content .interests h4 {
  color: var(--usc-cardinal);
  margin-bottom: 10px;
}

.detail-content .interests ul {
  list-style-position: inside;
  color: var(--muted);
}

.detail-content .interests li {
  margin-bottom: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .directory-list {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 1.5em;
  }

  .container {
    padding: 10px;
  }

  .controls {
    flex-direction: column;
  }

  .filter-group,
  .sort-group,
  .search-group {
    min-width: 100%;
  }
}