body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  margin: 0;
  padding: 0;
  background: #333;
  color: #fff;
}

header {
  background: #333;
  padding: 1rem;
  color: #fff;
}
header h1 {
  color: goldenrod;
}

header h1 {
  margin: 0 0 0.5rem;
}

.usage-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

progress {
  flex: 1;
  height: 1rem;
  accent-color: #50e3c2;
}

main {
  padding: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #444;
  box-shadow: 0 2px 5px rgba(0,0,0,0.5);
}

th, td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #555;
  text-align: left;
}

thead {
  background: #555;
  color: #fff;
}

tbody tr:nth-child(even) {
  background: #3c3c3c;
}

tbody tr:hover {
  background: #555;
}

.lesson-row td {
  background: #5a5a5a !important;
  font-style: italic;
}

.actions button {
  padding: 0.4rem 0.8rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  margin-right: 0.5rem;
}

button.download {
  background: #50e3c2;
  color: white;
}
button.download:hover {
  background: #3cbfa0;
}

button.del-transcript {
  background: #e94e77;
  color: white;
}
button.del-transcript:hover {
  background: #c83b5f;
}

button.del-lesson {
  background: #ff9f1c;
  color: white;
}
button.del-lesson:hover {
  background: #c83b5f;
}

.controls {
  padding: 0.5rem 1rem;
  background: #222;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.controls label {
  font-weight: bold;
  color: #fff;
}

.controls button {
  padding: 0.3rem 0.6rem;
  border: 1px solid #888;
  background: #444;
  color: #fff;
  border-radius: 3px;
  cursor: pointer;
}

.controls button:disabled {
  opacity: 0.5;
  cursor: default;
}

header {
  background: #333;
  padding: 1rem;
  color: goldenrod;
  text-align: center;       /* center header content */
}

header h1 {
  margin: 0 0 0.5rem;
}

.controls {
  padding: 0.5rem 1rem;
  background: #222;
  display: flex;
  justify-content: center;  /* center pagination buttons */
  align-items: center;
  gap: 1rem;
}

/* If you want the “Page X of Y” text itself centered under the table */
#pageInfo {
  margin: 0 1rem;
}


.actions button {
  background: none;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  color: inherit;
}
.actions button i {
  vertical-align: middle;
  width: 1.2em;
  height: 1.2em;
}
.actions button:hover {
  opacity: 0.8;
}

main {
  padding: 1rem;
  overflow-x: auto;      /* allow horizontal scroll on narrow screens */
}

@media (max-width: 600px) {
  th:nth-child(3), td:nth-child(3) { display: none; } /* hide “Size” column */
  th:nth-child(4), td:nth-child(4) { display: none; } /* hide “Created” column */
}

.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: #222;
  color: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  width: 90%;
  max-width: 400px;
}
.modal p { margin-bottom: 1rem; }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}
.modal-actions button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
#cancelDelete {
  background: #555;
  color: #ddd;
}
#confirmDelete {
  background: #e94e77;
  color: #fff;
}

/* spinner overlay covers the table while loading */
.spinner-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.spinner-overlay.hidden {
  display: none;
}

/* the spinner itself */
.spinner {
  border: 4px solid #444;
  border-top: 4px solid #50e3c2;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* in styles4.css (or wherever your CSS lives) */
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.spin {
  animation: spin 1s linear infinite;
}