* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #f5f6fa;
  --sidebar-bg: #2c3e50;
  --sidebar-text: #ecf0f1;
  --primary: #3498db;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --card-bg: #fff;
  --text: #2c3e50;
  --text-muted: #7f8c8d;
  --border: #dfe6e9;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
#sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 20px 0;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
}

#sidebar .logo {
  font-size: 18px;
  font-weight: 700;
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 10px;
}

#sidebar ul { list-style: none; }

#sidebar ul li a {
  display: block;
  padding: 12px 20px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.2s;
}

#sidebar ul li a:hover,
#sidebar ul li a.active {
  background: rgba(255,255,255,0.1);
}

#sidebar ul li a.active {
  border-left: 3px solid var(--primary);
}

/* Main content */
main {
  margin-left: 220px;
  padding: 30px;
  flex: 1;
  min-width: 0;
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card h2 {
  font-size: 16px;
  margin-bottom: 15px;
  color: var(--text);
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  margin-top: 4px;
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table tr:hover td {
  background: #f8f9fa;
}

/* Utilization badges */
.util-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
}

.util-low { background: #e8f5e9; color: #2e7d32; }
.util-medium { background: #fff3e0; color: #e65100; }
.util-high { background: #ffebee; color: #c62828; }

/* Week selector */
.week-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.week-selector input[type="date"] {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.week-selector button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.85; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Forms */
.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  width: 500px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
}

.modal h3 {
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* Chart container */
.chart-container {
  position: relative;
  height: 300px;
  margin-top: 15px;
}

/* Toolbar */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.view-title {
  font-size: 22px;
  font-weight: 700;
}

/* Allocation detail breakdown */
.alloc-detail {
  font-size: 12px;
  color: var(--text-muted);
}

.alloc-detail span {
  display: inline-block;
  margin-right: 8px;
}

/* Toggle for forecast view */
.toggle-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.toggle-group button {
  padding: 8px 16px;
  border: none;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  border-right: 1px solid var(--border);
}

.toggle-group button:last-child { border-right: none; }
.toggle-group button.active { background: var(--primary); color: #fff; }

/* Table filter input */
.table-toolbar {
  margin-bottom: 10px;
}

.table-filter {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  width: 280px;
  outline: none;
  transition: border-color 0.2s;
}

.table-filter:focus {
  border-color: var(--primary);
}

/* Sortable column headers */
.data-table th.sortable {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.data-table th.sortable:hover {
  color: var(--primary);
}

.sort-icon {
  font-size: 10px;
  color: var(--primary);
}

/* Sidebar user footer */
#sidebar {
  display: flex;
  flex-direction: column;
}

#sidebar ul {
  flex: 1;
}

.sidebar-footer {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 12px 20px;
  font-size: 13px;
}

.sidebar-user {
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.sidebar-user-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.sidebar-user-links a {
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 12px;
  opacity: 0.7;
}

.sidebar-user-links a:hover {
  opacity: 1;
}

.btn-logout {
  background: rgba(255,255,255,0.1);
  color: var(--sidebar-text);
  width: 100%;
  border: none;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
}

.btn-logout:hover {
  background: rgba(255,255,255,0.2);
}

.sidebar-logout-form {
  margin: 0;
}