:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #dbe3ee;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  margin-bottom: 24px;
}

.header h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.header p {
  margin: 0;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  font-weight: 600;
  margin-bottom: 6px;
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  background: #fff;
}

textarea {
  resize: vertical;
}

.btn {
  margin-top: 16px;
  border: none;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover {
  background: var(--primary-dark);
}

.btn.secondary {
  margin-top: 0;
  background: #e5e7eb;
  color: #111827;
}

.btn.secondary:hover {
  background: #d1d5db;
}

.message {
  margin-top: 12px;
  font-size: 0.95rem;
}

.message.success {
  color: var(--success);
}

.message.error {
  color: var(--danger);
}

.tasks-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.task-list {
  display: grid;
  gap: 14px;
}

.task-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  background: #fff;
}

.task-card h3 {
  margin: 0 0 8px;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.badge.pending {
  background: #fef3c7;
  color: #92400e;
}

.badge.in-progress {
  background: #dbeafe;
  color: #1d4ed8;
}

.badge.completed {
  background: #dcfce7;
  color: #166534;
}

.task-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.task-actions button {
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 600;
}

.task-actions .status-btn {
  background: #e5e7eb;
  color: #111827;
}

.task-actions .delete-btn {
  background: #fee2e2;
  color: #991b1b;
}

.empty {
  color: var(--muted);
  margin: 0;
}

@media (max-width: 768px) {
  .container {
    padding: 16px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}