:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #d9dee7;
  --text: #1f2933;
  --muted: #64748b;
  --primary: #176b87;
  --primary-dark: #0f4e63;
  --danger: #b42318;
  --success-bg: #e7f6ec;
  --success-text: #166534;
  --warning-bg: #fff4d6;
  --warning-text: #8a5a00;
}

* {
  box-sizing: border-box;
}

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

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 28px;
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
}

.nav {
  align-items: center;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav form {
  margin: 0;
}

.page {
  margin: 0 auto;
  max-width: 1440px;
  padding: 32px 24px 48px;
}

.page-header {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 22px;
}

.section-header {
  margin: 30px 0 14px;
}

h1,
h2 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: 1.7rem;
}

h2 {
  font-size: 1.1rem;
}

.muted {
  color: var(--muted);
}

.block {
  display: block;
}

.table-wrap,
.form-panel,
.auth-panel,
.result-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

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

table {
  border-collapse: collapse;
  min-width: 900px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef3f6;
  color: #334155;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.milestone-table textarea {
  min-width: 0;
}

.milestone-table table {
  min-width: 1230px;
  table-layout: fixed;
}

.milestone-table th:nth-child(1),
.milestone-table td:nth-child(1) {
  width: 240px;
}

.milestone-table th:nth-child(2),
.milestone-table td:nth-child(2),
.milestone-table th:nth-child(3),
.milestone-table td:nth-child(3) {
  width: 132px;
}

.milestone-table th:nth-child(4),
.milestone-table td:nth-child(4) {
  width: 190px;
}

.milestone-table th:nth-child(5),
.milestone-table td:nth-child(5) {
  width: 330px;
}

.milestone-table th:nth-child(6),
.milestone-table td:nth-child(6) {
  width: 246px;
}

.auth-panel {
  margin: 64px auto 0;
  max-width: 420px;
  padding: 28px;
}

.form-panel {
  padding: 24px;
}

.filter-bar {
  align-items: end;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  padding: 16px;
}

.filter-bar label {
  min-width: 220px;
}

.sort-link {
  color: inherit;
  display: inline-flex;
  gap: 6px;
}

.sort-link:hover {
  color: var(--primary);
}

.sort-indicator {
  color: var(--primary);
}

.form-grid {
  display: grid;
  gap: 18px;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.full-width-field {
  margin-top: 18px;
}

.todo-type-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.todo-type-option {
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  padding: 18px;
}

label {
  color: #334155;
  display: grid;
  font-weight: 650;
  gap: 7px;
}

input,
textarea,
select {
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  padding: 9px 10px;
  width: 100%;
}

textarea {
  resize: vertical;
}

.checkbox-row {
  align-items: center;
  display: flex;
  flex-direction: row;
  gap: 8px;
}

.checkbox-row input {
  width: auto;
}

.compact {
  font-weight: 500;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}

.row-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.row-actions form {
  margin: 0;
}

.compact-actions {
  margin-top: 0;
}

.primary-button,
.secondary-button,
.link-button {
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  min-height: 38px;
  padding: 8px 13px;
}

.primary-button {
  background: var(--primary);
  border: 1px solid var(--primary);
  color: white;
}

.primary-button:hover {
  background: var(--primary-dark);
  text-decoration: none;
}

.secondary-button {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.link-button {
  background: transparent;
  border: 0;
  color: var(--primary);
  padding: 0;
}

.pill {
  border-radius: 999px;
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 3px 9px;
}

.pill.active {
  background: var(--success-bg);
  color: var(--success-text);
}

.pill.inactive {
  background: #eef2f7;
  color: #475569;
}

.pill.overdue {
  background: #fee4e2;
  color: var(--danger);
}

.danger-text {
  color: var(--danger);
  font-weight: 800;
}

.messages {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.message {
  border-radius: 6px;
  padding: 11px 13px;
}

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

.message.error {
  background: #fee4e2;
  color: var(--danger);
}

.message.warning {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.empty {
  color: var(--muted);
  text-align: center;
}

details summary {
  color: var(--primary);
  cursor: pointer;
  font-weight: 700;
}

.inline-form {
  display: grid;
  gap: 8px;
  margin-top: 10px;
  min-width: 0;
}

.extension-list {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 10px 0 0;
  padding-left: 18px;
}

.result-block {
  margin-top: 18px;
  padding: 20px;
}

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

.errorlist {
  color: var(--danger);
  font-weight: 500;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width: 720px) {
  .topbar,
  .page-header,
  .nav,
  .filter-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    gap: 12px;
    padding: 16px 20px;
  }

  .nav {
    gap: 10px;
  }

  .page {
    padding: 24px 16px 40px;
  }

  .filter-bar label {
    width: 100%;
  }

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

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