:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #17202a;
  --muted: #627084;
  --line: #d9e0e8;
  --blue: #1f6feb;
  --teal: #0f8b8d;
  --green: #2f855a;
  --amber: #b7791f;
  --red: #c2410c;
  --shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
}

* {
  box-sizing: border-box;
}

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

button,
input,
textarea {
  font: inherit;
}

.topbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 22px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 21px;
  font-weight: 750;
}

.topbar p,
.project-meta,
#project-meta {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.register {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(240px, 420px) minmax(100px, 140px) 42px;
  gap: 8px;
  align-items: center;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  background: #fbfcfd;
  color: var(--ink);
}

.copy-box {
  min-height: 120px;
  resize: vertical;
  line-height: 1.45;
  color: var(--ink);
}

.button-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.button-row.compact {
  gap: 6px;
  margin-top: 0;
  flex-shrink: 0;
}

.knowledge-form {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto 42px;
  gap: 8px;
  margin-bottom: 12px;
  align-items: center;
}

.check-line {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.knowledge-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.snippet {
  margin-top: 8px;
  max-height: 220px;
  font-size: 12px;
}

.favorite-item {
  border-left-color: var(--amber);
}

.link-list {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}

.link-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.link-item a {
  color: var(--blue);
}

button,
.icon-link {
  min-width: 38px;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
}

.button-row button,
.button-row .icon-link {
  padding: 0 10px;
}

button:hover,
.icon-link:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  min-height: calc(100vh - 73px);
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #eef2f5;
  padding: 14px;
}

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.project-list {
  display: grid;
  gap: 8px;
}

.project-button {
  width: 100%;
  display: grid;
  justify-items: start;
  gap: 4px;
  min-height: 66px;
  padding: 10px;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: none;
  text-align: left;
}

.project-button.active {
  border-color: var(--blue);
  box-shadow: inset 3px 0 0 var(--blue);
}

.project-button span {
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.content {
  padding: 18px;
  min-width: 0;
}

.empty {
  height: 55vh;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.hidden {
  display: none !important;
}

.project-view {
  display: grid;
  gap: 16px;
}

.summary-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.summary-band h2 {
  font-size: 24px;
}

.actions {
  display: flex;
  gap: 8px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 10px;
}

.stat {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.stat strong {
  display: block;
  font-size: 21px;
}

.stat span {
  color: var(--muted);
  font-size: 12px;
}

.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}

.tab {
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  background: transparent;
  min-height: 42px;
  padding: 0 12px;
}

.tab.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.tab-panel {
  display: grid;
  gap: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.panel,
.list-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

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

.panel h3,
.list-card h3 {
  font-size: 15px;
  margin-bottom: 10px;
}

.items {
  display: grid;
  gap: 8px;
}

.item {
  border-left: 3px solid var(--teal);
  padding: 6px 0 6px 10px;
}

.item strong {
  display: block;
  overflow-wrap: anywhere;
}

.item span,
.small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.badge-row {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
}

.badge {
  border: 1px solid #cbd7e3;
  border-radius: 999px;
  padding: 5px 9px;
  background: #f8fafc;
  font-size: 12px;
}

.badge.green {
  border-color: #b7dfca;
  color: var(--green);
}

.badge.amber {
  border-color: #f1d39b;
  color: var(--amber);
}

.badge.red {
  border-color: #f6b9a3;
  color: var(--red);
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  padding: 14px;
  background: #111827;
  color: #e5edf6;
  border-radius: 8px;
  line-height: 1.48;
  max-height: 68vh;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

th,
td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-size: 13px;
}

th {
  background: #edf2f7;
}

td {
  overflow-wrap: anywhere;
}

@media (max-width: 980px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

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

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

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

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