:root {
  --color-bg: #f4faf7;
  --color-bg-soft: #edf7f2;
  --color-surface: #ffffff;
  --color-surface-tint: #f7fcf9;
  --color-border: #dcebe3;
  --color-border-soft: #edf4ef;
  --color-primary: #0f8f67;
  --color-primary-strong: #123f34;
  --color-primary-muted: #5a8f75;
  --color-primary-soft: #e5f5ee;
  --color-primary-hover: #087857;
  --color-danger: #c9473d;
  --color-danger-soft: #fff0ee;
  --color-warning: #b76b16;
  --color-warning-soft: #fff6e8;
  --color-success: #13865f;
  --color-success-soft: #e6f6ef;
  --color-progress: #2478a6;
  --color-progress-soft: #eaf6fb;
  --color-info: #4f6f65;
  --color-info-soft: #eef5f2;
  --color-text: #183d34;
  --color-text-strong: #0f3129;
  --color-text-muted: #6b8179;
  --color-text-faint: #91a39b;
  --color-inverse: #ffffff;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 10px 28px rgba(18, 63, 52, 0.08);
  --shadow-soft: 0 4px 14px rgba(18, 63, 52, 0.06);
  --shadow-modal: 0 18px 48px rgba(18, 63, 52, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  background:
    linear-gradient(rgba(18, 63, 52, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 63, 52, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 92% 12%, rgba(15, 143, 103, 0.10) 0 110px, transparent 112px),
    radial-gradient(circle at 4% 88%, rgba(194, 170, 102, 0.10) 0 90px, transparent 92px),
    var(--color-bg);
  background-size: 48px 48px, 48px 48px, auto, auto, auto;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

svg {
  width: 1em;
  height: 1em;
  stroke-width: 2;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 48px;
  border-bottom: 1px solid var(--color-border-soft);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: var(--color-primary);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
}

.brand h1 {
  margin: 0;
  color: var(--color-primary-strong);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
}

.brand p,
.intro-copy,
.table-card-header p,
.form-note {
  margin: 0;
  color: var(--color-text-muted);
}

.brand p {
  font-size: 13px;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  gap: 8px;
  padding: 8px 12px;
  color: var(--color-text-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(247, 252, 249, 0.9);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.user-chip svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  gap: 8px;
  padding: 8px 16px;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(15, 143, 103, 0.36);
  box-shadow: var(--shadow-soft);
}

.btn:focus-visible,
.icon-button:focus-visible,
.sort-button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(15, 143, 103, 0.16);
  outline-offset: 2px;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  color: var(--color-inverse);
  border-color: var(--color-primary);
  background: var(--color-primary);
}

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

.btn-ghost {
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.86);
}

.btn-danger {
  color: var(--color-inverse);
  border-color: var(--color-danger);
  background: var(--color-danger);
}

.btn-danger:hover {
  border-color: #ad372f;
  background: #ad372f;
}

.btn-compact {
  min-height: 34px;
  padding: 6px 12px;
}

.app-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 30px 48px 48px;
}

.intro-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 22px;
}

.intro-panel > * {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--color-primary-muted);
  font-size: 13px;
  font-weight: 700;
}

.intro-panel h2 {
  max-width: 790px;
  margin: 0;
  color: var(--color-primary-strong);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.18;
  overflow-wrap: anywhere;
}

.intro-copy {
  max-width: 850px;
  margin-top: 14px;
  font-size: 16px;
}

.intro-summary {
  min-width: 190px;
  padding: 18px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(247, 252, 249, 0.92);
  box-shadow: var(--shadow-soft);
}

.intro-summary span {
  display: block;
  color: var(--color-text-muted);
  font-size: 13px;
}

.intro-summary strong {
  display: block;
  margin-top: 4px;
  color: var(--color-primary-strong);
  font-size: 20px;
}

.sync-line,
.collaborator-line {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

.sync-line svg {
  width: 15px;
  height: 15px;
}

.sync-line.is-online {
  color: var(--color-success);
}

.sync-line.is-offline {
  color: var(--color-danger);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.stat-icon {
  display: grid;
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.stat-icon svg {
  width: 23px;
  height: 23px;
}

.stat-card[data-tone="danger"] .stat-icon {
  color: var(--color-danger);
  background: var(--color-danger-soft);
}

.stat-card[data-tone="warning"] .stat-icon {
  color: var(--color-warning);
  background: var(--color-warning-soft);
}

.stat-card[data-tone="success"] .stat-icon {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.stat-card[data-tone="progress"] .stat-icon {
  color: var(--color-progress);
  background: var(--color-progress-soft);
}

.stat-info {
  min-width: 0;
}

.stat-info strong {
  display: block;
  color: var(--color-text-strong);
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}

.stat-info span {
  display: block;
  margin-top: 2px;
  color: var(--color-text-muted);
  font-size: 13px;
  white-space: nowrap;
}

.filter-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(247, 252, 249, 0.92);
  box-shadow: var(--shadow-soft);
}

.search-field {
  display: flex;
  flex: 1 1 280px;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 12px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.name-field {
  display: grid;
  flex: 0 1 160px;
  gap: 6px;
}

.name-field span {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

.name-field input {
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.search-field svg {
  width: 17px;
  height: 17px;
}

.search-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--color-text);
  background: transparent;
}

.filter-group {
  display: grid;
  gap: 6px;
}

.filter-group label,
.form-field span {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

select,
input,
textarea {
  color: var(--color-text);
}

.filter-group select,
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.filter-group select:focus,
.name-field input:focus,
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 143, 103, 0.12);
  outline: 0;
}

.table-card {
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.table-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border-soft);
}

.table-card-header h2 {
  margin: 0;
  color: var(--color-text-strong);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.25;
}

.table-card-header p {
  font-size: 13px;
}

#tableCount {
  flex: 0 0 auto;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

th,
td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--color-border-soft);
  text-align: left;
  vertical-align: middle;
}

thead th {
  color: var(--color-text-muted);
  background: var(--color-surface-tint);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

tbody tr {
  transition: background 0.16s ease;
}

tbody tr:hover {
  background: #f2faf6;
}

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

td {
  font-size: 14px;
}

.check-cell {
  width: 48px;
}

.actions-cell {
  width: 128px;
}

.sort-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0;
  color: inherit;
  border: 0;
  background: transparent;
  font-weight: inherit;
}

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

.task-title {
  color: var(--color-text-strong);
  font-weight: 700;
}

.task-title.is-done {
  color: var(--color-text-faint);
  text-decoration: line-through;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.tag-urgent,
.tag-overdue {
  color: var(--color-danger);
  background: var(--color-danger-soft);
}

.tag-important {
  color: var(--color-warning);
  background: var(--color-warning-soft);
}

.tag-normal,
.tag-todo {
  color: #60756d;
  background: #f1f5f3;
}

.tag-progress {
  color: var(--color-progress);
  background: var(--color-progress-soft);
}

.tag-done {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.priority-wrap,
.date-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.priority-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #60756d;
}

.priority-dot.urgent {
  background: var(--color-danger);
}

.priority-dot.important {
  background: var(--color-warning);
}

.task-check {
  width: 18px;
  height: 18px;
  accent-color: var(--color-success);
}

.desc-cell {
  max-width: 220px;
  overflow: hidden;
  color: var(--color-text-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.action-buttons {
  display: flex;
  gap: 6px;
}

.icon-button {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.icon-button:hover {
  color: var(--color-primary);
  border-color: var(--color-border);
  background: var(--color-surface-tint);
}

.icon-button.danger:hover {
  color: var(--color-danger);
  background: var(--color-danger-soft);
}

.icon-button svg {
  width: 17px;
  height: 17px;
}

.empty-state {
  padding: 58px 20px;
  text-align: center;
}

.empty-state .empty-icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  margin: 0 auto 12px;
  color: var(--color-primary-muted);
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
}

.empty-state svg {
  width: 28px;
  height: 28px;
}

.empty-state strong {
  display: block;
  color: var(--color-text-strong);
  font-size: 17px;
}

.empty-state p {
  max-width: 360px;
  margin: 6px auto 0;
  color: var(--color-text-muted);
}

.toast-container {
  position: fixed;
  top: 86px;
  right: 22px;
  z-index: 50;
  display: grid;
  gap: 10px;
  max-width: min(360px, calc(100vw - 32px));
}

.toast {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-info-soft);
  color: var(--color-info);
  box-shadow: var(--shadow-card);
  font-size: 14px;
  font-weight: 700;
  animation: toastIn 0.22s ease;
}

.toast.success {
  color: var(--color-success);
  border-color: rgba(19, 134, 95, 0.18);
  background: var(--color-success-soft);
}

.toast.error {
  color: var(--color-danger);
  border-color: rgba(201, 71, 61, 0.18);
  background: var(--color-danger-soft);
}

.modal {
  width: min(560px, calc(100vw - 32px));
  padding: 0;
  border: 0;
  background: transparent;
}

.modal-narrow {
  width: min(440px, calc(100vw - 32px));
}

.modal::backdrop {
  background: rgba(18, 63, 52, 0.34);
  backdrop-filter: blur(4px);
}

.modal-card {
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-modal);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px 18px;
  border-bottom: 1px solid var(--color-border-soft);
}

.modal-header h2 {
  margin: 0;
  color: var(--color-text-strong);
  font-size: 20px;
  font-weight: 800;
}

.modal-body {
  display: grid;
  gap: 16px;
  padding: 22px 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field b {
  color: var(--color-danger);
}

.form-field textarea {
  min-height: 96px;
  resize: vertical;
}

.form-note {
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-tint);
  font-size: 13px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px 22px;
  border-top: 1px solid var(--color-border-soft);
}

.confirm-box {
  text-align: center;
}

.confirm-icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  margin: 2px auto 14px;
  color: var(--color-danger);
  border-radius: var(--radius-lg);
  background: var(--color-danger-soft);
}

.confirm-icon svg {
  width: 28px;
  height: 28px;
}

.confirm-box p {
  margin: 0;
  color: var(--color-text-strong);
  font-size: 16px;
  font-weight: 800;
}

.confirm-box span {
  display: block;
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 13px;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1180px) {
  .stats-grid {
    grid-template-columns: repeat(3, minmax(160px, 1fr));
  }
}

@media (max-width: 780px) {
  .app-header {
    position: static;
    align-items: flex-start;
    padding: 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand h1 {
    font-size: 19px;
  }

  .header-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    justify-content: stretch;
  }

  .header-actions .btn {
    width: 100%;
    min-width: 0;
    padding-inline: 10px;
  }

  .user-chip {
    justify-content: center;
  }

  .app-header,
  .intro-panel {
    flex-direction: column;
  }

  .app-shell {
    padding: 18px 16px 30px;
  }

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

  .intro-panel h2 {
    max-width: 11em;
    font-size: 26px;
    word-break: break-all;
  }

  .intro-summary {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .stat-card {
    padding: 14px;
  }

  .stat-icon {
    width: 40px;
    height: 40px;
  }

  .stat-info strong {
    font-size: 24px;
  }

  .filter-panel {
    align-items: stretch;
  }

  .filter-group {
    flex: 1 1 140px;
  }

  .table-card-header {
    align-items: flex-start;
    flex-direction: column;
  }

  table {
    min-width: 760px;
  }

  .hide-mobile {
    display: none;
  }

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

@media (max-width: 520px) {
  .header-actions {
    grid-template-columns: 1fr;
  }

  .header-actions .btn {
    font-size: 13px;
  }

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

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer .btn {
    width: 100%;
  }
}