:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #edf2f7;
  --text: #1f2933;
  --muted: #66788a;
  --line: #d9e2ec;
  --primary: #126b73;
  --primary-strong: #0b4f55;
  --accent: #f7c948;
  --danger: #c23b35;
  --success: #2f855a;
  --shadow: 0 16px 40px rgba(16, 42, 67, 0.08);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #111827;
  --surface: #182230;
  --surface-2: #223043;
  --text: #edf2f7;
  --muted: #a7b6c8;
  --line: #344255;
  --primary: #36a3ad;
  --primary-strong: #56c1ca;
  --accent: #f7c948;
  --danger: #ff7b72;
  --success: #68d391;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

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

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 16px;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: grid;
  gap: 6px;
  margin-top: 28px;
}

.nav-item {
  width: 100%;
  min-height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
}

.nav-item:hover,
.nav-item.is-active {
  background: var(--surface-2);
  color: var(--text);
}

.main {
  min-width: 0;
  padding: 26px;
}

.topbar,
.section-toolbar,
.panel-heading,
.dialog-heading,
.top-actions,
.filter-row,
.dialog-actions {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

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

h1 {
  margin-bottom: 0;
  font-size: 28px;
}

h2 {
  margin-bottom: 0;
  font-size: 18px;
}

h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.eyebrow {
  margin-bottom: 5px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

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

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
}

.search-box input {
  width: min(34vw, 340px);
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.primary-button,
.ghost-button,
.icon-button,
.danger-button,
.quick-grid button,
.settings-actions button,
.import-button,
.dialog-actions button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}

.primary-button {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
}

.primary-button:hover {
  background: var(--primary-strong);
}

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

.icon-button {
  width: 40px;
  padding: 0;
  font-size: 20px;
}

.danger-button {
  border-color: rgba(194, 59, 53, 0.3);
  color: var(--danger);
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.dashboard-grid,
.insight-layout,
.settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.9fr);
  gap: 16px;
}

.panel,
.record-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel {
  padding: 18px;
}

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

.panel-heading,
.section-toolbar {
  justify-content: space-between;
  gap: 12px;
}

.section-toolbar {
  margin-bottom: 16px;
}

.focus-panel {
  min-height: 250px;
  border-top: 4px solid var(--accent);
}

.today-summary {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.summary-line {
  padding: 12px;
  border-radius: 8px;
  background: var(--surface-2);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.quick-grid button {
  text-align: left;
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.stat {
  min-height: 86px;
  padding: 12px;
  border-radius: 8px;
  background: var(--surface-2);
}

.stat strong {
  display: block;
  margin-top: 8px;
  font-size: 24px;
}

.record-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.record-card {
  display: grid;
  gap: 10px;
  min-height: 188px;
  padding: 15px;
}

.record-card header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.record-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.record-card footer,
.tag-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12px;
}

.type-badge {
  background: rgba(44, 177, 188, 0.15);
  color: var(--primary);
}

.stack-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.stack-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.list-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}

.list-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-row {
  gap: 8px;
  flex-wrap: wrap;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}

input,
select {
  min-height: 40px;
  padding: 0 10px;
}

textarea {
  min-height: 220px;
  padding: 12px;
  line-height: 1.7;
  resize: vertical;
}

.task-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.task-column {
  min-height: 360px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.task-column h3 {
  margin-bottom: 12px;
}

.plain-textarea {
  min-height: 340px;
  margin-top: 14px;
  white-space: pre-wrap;
}

.tag-cloud {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.tag-cloud .badge {
  min-height: 30px;
}

.template-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.template-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.settings-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.import-button input {
  display: none;
}

.muted {
  color: var(--muted);
  line-height: 1.7;
}

dialog {
  width: min(880px, calc(100vw - 28px));
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.5);
}

.entry-form {
  display: grid;
  gap: 16px;
}

.dialog-heading {
  justify-content: space-between;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

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

.dialog-actions {
  grid-template-columns: auto 1fr auto auto;
  gap: 10px;
}

.empty-state {
  padding: 22px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .nav {
    display: flex;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .nav-item {
    flex: 0 0 auto;
    width: auto;
  }

  .topbar,
  .dashboard-grid,
  .insight-layout,
  .settings-grid,
  .task-board {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .top-actions {
    justify-content: stretch;
  }

  .search-box,
  .search-box input {
    width: 100%;
  }
}

@media (max-width: 620px) {
  .main {
    padding: 16px;
  }

  .stats-strip,
  .form-grid,
  .quick-grid {
    grid-template-columns: 1fr;
  }

  .list-header,
  .section-toolbar {
    grid-template-columns: 1fr;
    display: grid;
  }
}