:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #7c3aed;
  --primary-dark: #6d28d9;
  --border: #e5e7eb;
  --success: #059669;
  --danger: #dc2626;
}

* {
  box-sizing: border-box;
}

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

h1 {
  margin: 0;
}

.subtitle {
  margin-top: 4px;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tab-btn {
  width: auto;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  cursor: pointer;
}

.tab-btn.active {
  background: #111827;
  color: #fff;
  border-color: #111827;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

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

.stat-value {
  margin: 6px 0 0;
  font-size: 28px;
  font-weight: 700;
}

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.card-wide {
  grid-column: 1 / -1;
}

h2, h3 {
  margin: 0 0 12px;
}

.form {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
}

.form-row {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

input, select, button {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}

.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
}

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

.btn-secondary {
  background: #111827;
}

.btn-small {
  padding: 6px 10px;
  font-size: 12px;
  width: auto;
  margin-right: 6px;
}

.btn-danger {
  background: #b91c1c;
}

.btn-danger:hover {
  background: #991b1b;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  border-bottom: 1px solid var(--border);
  padding: 10px 8px;
  font-size: 14px;
}

.status-done {
  color: var(--success);
  font-weight: 600;
}

.status-open {
  color: var(--danger);
  font-weight: 600;
}

.toast {
  margin-bottom: 14px;
  padding: 10px 12px;
  border-radius: 10px;
  color: #fff;
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

.hidden {
  display: none;
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.day-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: #fafafa;
}

.day-title {
  font-weight: 700;
  margin-bottom: 8px;
}

.day-item {
  font-size: 14px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
}

.day-item:last-child {
  border-bottom: none;
}

@media (max-width: 900px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .card-wide {
    grid-column: auto;
  }

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

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

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