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

html, body {
  height: 100%;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background: #f4f6f8;
  overflow-x: hidden;
}

main {
  flex: 1;
}

.main-header {
  background: #1976d2;
  color: white;
  padding: 1.5rem 1rem;
  text-align: center;
  width: 100%;
  margin: 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0 2rem;
  padding: 0 1rem;
}

.controls input {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  width: 100%;
  max-width: 400px;
}

#tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

#tag-filters label {
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  user-select: none;
}

.tag-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.tag-actions button {
  padding: 0.4rem 0.8rem;
  border: none;
  background: #e0e0e0;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
}

.tag-actions button:hover {
  background: #d5d5d5;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
  padding: 0 1rem 2rem;
}

.card {
  background: rgba(255, 255, 255, 0.5);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  position: relative;
}

.card:hover {
  transform: scale(1.03);
}

.card a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card h2 {
  font-size: 1.1rem;
  margin: 0.5rem 0 0.3rem;
}

.card p {
  font-size: 0.9rem;
  color: #555;
}

.app-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  margin-bottom: 0.5rem;
  border-radius: 6px;
  background-color: #fff;
}

.badge-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  width: 100%;
  gap: 0.5rem;
}

.badge-row .category-badge {
  flex: 1 0 0;
  text-align: center;
  font-size: 0.75rem;
  padding: 0.4rem 0.5rem;
  border-radius: 6px;
  color: white;
  white-space: nowrap;
  min-width: 0;
}

.category-badge.Student {
  background-color: #c8e6c9;
  color: #256029;
}

.category-badge.Staff {
  background-color: #bbdefb;
  color: #0d47a1;
}

.category-badge.Admin {
  background-color: #ffcdd2;
  color: #b71c1c;
}

.category-badge.None {
  background-color: #eeeeee;
  color: #424242;
}

.login-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
  width: 100%;
  gap: 0.5rem;
}

.login-row > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.login-row .category-badge {
  flex: 1 0 0;
  text-align: center;
  background-color: #f5f5f5;
  color: #333;
  padding: 0.4rem 0.5rem;
  font-size: 0.75rem;
  border-radius: 6px;
  white-space: nowrap;
  min-width: 0;
}

.main-footer {
  background: #1976d2;
  color: white;
  text-align: center;
  padding: 1rem;
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
}

.custom-tooltip {
  position: absolute;
  top: -55px;
  left: 0;
  transform: none;
  background: rgba(50, 50, 50, 0.9);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-size: 0.8rem;
  width: 100%;
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  white-space: normal;
  z-index: 1000;
  display: none;
}

.autocomplete-list {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  background: white;
  border: 1px solid #ccc;
  border-radius: 8px;
  max-height: 200px;
  overflow-y: auto;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  z-index: 999;
  display: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.autocomplete-list li {
  padding: 0.5rem 1rem;
  cursor: pointer;
}

.autocomplete-list li:hover {
  background-color: #f0f0f0;
}

.toggle-filters {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  font-size: 1.25rem;
  color: #555;
  height: 40px;
  width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.toggle-filters:hover {
  color: #000;
}

.tag-container.hidden {
  display: none;
}

.autocomplete-list li.active {
  background-color: #d0e0ff;
}

.faded-tag {
  opacity: 0.4;
  filter: grayscale(80%);
}

.no-results-wrapper {
  position: relative;
  text-align: center;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.no-results-img {
  width: 250px;
  height: auto;
  margin-top: 1rem;
}

.speech-bubble {
  position: relative;
  background: #fff;
  color: #000;
  border: 2px solid #000;
  border-radius: 12px;
  padding: 1rem 1.5rem;
  max-width: 450px;
  font-size: 1rem;
  box-shadow: 2px 2px 6px rgba(0,0,0,0.1);
  z-index: 10;
}

.speech-bubble::after {
  content: "";
  position: absolute;
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 8px;
  border-style: solid;
  border-color: #000 transparent transparent transparent;
}

.speech-bubble::before {
  content: "";
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 7px;
  border-style: solid;
  border-color: #fff transparent transparent transparent;
}