:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

#app { min-height: 100vh; }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background: var(--card);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-bottom: 1rem;
}

h1, h2, h3 { margin-top: 0; }

.form-group { margin-bottom: 1rem; }
label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}
input, select, textarea, button {
  font-family: inherit;
  font-size: 1rem;
}
input, select, textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}
button {
  cursor: pointer;
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  font-weight: 600;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-success {
  background: var(--success);
  color: white;
}
.btn-secondary {
  background: var(--border);
  color: var(--text);
}

.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.error {
  background: #fee2e2;
  color: #991b1b;
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}
.success {
  background: #dcfce7;
  color: #166534;
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
th, td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; }

.status {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}
.status-ongoing { background: #dbeafe; color: #1e40af; }
.status-completed { background: #dcfce7; color: #166534; }
.status-pending { background: #f3f4f6; color: #374151; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}
.modal {
  background: var(--card);
  border-radius: 0.75rem;
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
}

.info {
  font-size: 0.875rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .container { padding: 0.5rem; }
  .card { padding: 1rem; }
}