* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: system-ui, -apple-system, sans-serif; background:#f5f5f5; color:#333; line-height:1.5; }
a { color:#1a73e8; text-decoration:none; }
a:hover { text-decoration:underline; }

.header { background:#1a237e; color:#fff; padding:1rem 2rem; display:flex; justify-content:space-between; align-items:center; }
.header h1 { font-size:1.3rem; }
.header-actions { display:flex; gap:1rem; align-items:center; }
.header-actions span { font-size:.9rem; }
.header-actions button, .header-actions select { padding:.3rem .6rem; border:none; border-radius:4px; cursor:pointer; font-size:.85rem; }

.container { max-width:1200px; margin:1.5rem auto; padding:0 1.5rem; }

.card { background:#fff; border-radius:8px; box-shadow:0 1px 3px rgba(0,0,0,.12); padding:1.5rem; margin-bottom:1.5rem; }
.card h2 { font-size:1.1rem; margin-bottom:1rem; color:#1a237e; border-bottom:1px solid #eee; padding-bottom:.5rem; }

.form-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(250px,1fr)); gap:1rem; }
.form-group { display:flex; flex-direction:column; }
.form-group label { font-size:.85rem; font-weight:600; margin-bottom:.25rem; }
.form-group input, .form-group select { padding:.5rem; border:1px solid #ccc; border-radius:4px; font-size:.9rem; }
.form-group input:focus { outline:2px solid #1a73e8; border-color:transparent; }

.btn { padding:.5rem 1rem; border:none; border-radius:4px; cursor:pointer; font-size:.9rem; font-weight:600; }
.btn-primary { background:#1a73e8; color:#fff; }
.btn-primary:hover { background:#1557b0; }
.btn-danger { background:#d32f2f; color:#fff; }
.btn-danger:hover { background:#b71c1c; }
.btn-secondary { background:#e0e0e0; color:#333; }
.btn-secondary:hover { background:#bdbdbd; }

table { width:100%; border-collapse:collapse; font-size:.9rem; }
th, td { padding:.6rem .75rem; text-align:left; border-bottom:1px solid #eee; }
th { background:#f5f5f5; font-weight:600; color:#555; }
tr:hover { background:#f9f9f9; }

.msg { padding:.75rem 1rem; border-radius:4px; margin-bottom:1rem; font-size:.9rem; }
.msg-info { background:#e3f2fd; color:#1565c0; }
.msg-success { background:#e8f5e9; color:#2e7d32; }
.msg-error { background:#ffebee; color:#c62828; }

.input-error {
  border-color: #c62828 !important;
  outline: 2px solid #c62828 !important;
}

.field-error {
  color: #c62828;
  font-size: .8rem;
  margin-top: .25rem;
  display: block;
}

.tabs { display:flex; gap:0; margin-bottom:1.5rem; flex-wrap:wrap; }
.tab { padding:.5rem 1rem; background:#e0e0e0; cursor:pointer; border-radius:4px 4px 0 0; font-size:.85rem; font-weight:600; }
.tab.active { background:#1a237e; color:#fff; }
.tab-content { display:none; }
.tab-content.active { display:block; }

.period-switch { display:flex; gap:.5rem; align-items:center; margin-bottom:1rem; }
.period-switch label { font-weight:600; }
.period-switch select { padding:.3rem .5rem; border:1px solid #ccc; border-radius:4px; }

.histogram { display:flex; align-items:flex-end; gap:.3rem; height:200px; padding:1rem 0; }
.bar { flex:1; min-width:30px; background:#1a73e8; border-radius:4px 4px 0 0; display:flex; flex-direction:column; align-items:center; justify-content:flex-end; color:#fff; font-size:.75rem; text-align:center; position:relative; }
.bar .label { margin-bottom:.3rem; }
.bar .count { position:absolute; top:-1.4rem; font-weight:700; color:#333; }

.modal { position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,.5); display:flex; align-items:center; justify-content:center; z-index:1000; }
.modal-content { background:#fff; border-radius:8px; padding:2rem; max-width:500px; width:90%; max-height:80vh; overflow-y:auto; }
.modal-wide .modal-content { max-width:750px; }
.modal h2 { margin-bottom:1rem; }
.modal-actions { display:flex; gap:.5rem; justify-content:flex-end; margin-top:1rem; }

@media (max-width:768px) {
  .header { flex-direction:column; gap:.5rem; }
  .form-grid { grid-template-columns:1fr; }
  .histogram { height:120px; }
  .module-report-container { grid-template-columns:1fr; }
  .module-report-right { border-left:none; border-top:1px solid #eee; padding-left:0; padding-top:1rem; }
}

.module-report-container {
  display: grid;
  grid-template-columns: 7fr 3fr;
  gap: 1rem;
}

.module-report-left {
  overflow-x: auto;
}

.module-report-right {
  border-left: 1px solid #eee;
  padding-left: 1rem;
}

.module-report-right h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: #1a237e;
}

.lecturer-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.lecturer-draggable {
  padding: 0.5rem;
  margin: 0.2rem 0;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: grab;
  user-select: none;
  font-size: 0.85rem;
  transition: all 0.15s;
}

.lecturer-draggable:hover {
  background: #e8eaf6;
  border-color: #c5cae9;
}

.lecturer-draggable:active {
  cursor: grabbing;
}

.lecturer-draggable.dragging {
  opacity: 0.5;
  background: #e3f2fd;
}

.module-report-table .drop-zone {
  min-height: 40px;
  border: 2px dashed transparent;
  border-radius: 4px;
  padding: 4px;
  transition: all 0.2s;
  vertical-align: top;
}

.module-report-table .drop-zone.drag-over {
  border-color: #1a73e8;
  background: #e3f2fd;
}

.module-report-table .drop-zone:empty::after {
  content: "Sleep dosent hier";
  color: #999;
  font-size: 0.75rem;
  font-style: italic;
}

.lecturer-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #e8eaf6;
  border: 1px solid #c5cae9;
  border-radius: 16px;
  padding: 2px 8px;
  font-size: 0.8rem;
  cursor: pointer;
  margin: 2px;
  transition: all 0.15s;
}

.lecturer-chip:hover {
  background: #c5cae9;
}

.lecturer-chip .remove {
  font-size: 0.9rem;
  color: #c62828;
  font-weight: bold;
  line-height: 1;
}

.lecturer-draggable .lecturer-name {
  font-weight: 600;
  font-size: 0.85rem;
}

.lecturer-draggable .lecturer-hours {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}

.hour-badge {
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 600;
  background: #f5f5f5;
  border: 1px solid #e0e0e0;
}

/* User menu dropdown */
.user-menu {
  position: relative;
  cursor: pointer;
}

.user-menu-name {
  font-size: .9rem;
  padding: .3rem .6rem;
  border-radius: 4px;
  transition: background 0.2s;
}

.user-menu:hover .user-menu-name {
  background: rgba(255,255,255,.15);
}

.user-menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
  min-width: 160px;
  z-index: 100;
  overflow: hidden;
}

.user-menu-dropdown a {
  display: block;
  padding: .6rem 1rem;
  color: #333;
  font-size: .9rem;
  cursor: pointer;
  transition: background 0.15s;
}

.user-menu-dropdown a:hover {
  background: #f5f5f5;
  text-decoration: none;
}

.user-menu-dropdown.show {
  display: block;
}