:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #617080;
  --line: #d7dee8;
  --line-soft: #e7ecf2;
  --accent: #005ea8;
  --accent-dark: #004b86;
  --app: #0b5cab;
  --map: #a76500;
  --vector: #147a52;
  --raster: #7048a8;
  --unknown: #6b7280;
  --danger: #b42318;
  --shadow: 0 12px 34px rgba(31, 41, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--bg);
}

button,
input {
  font: inherit;
}

button {
  min-height: 36px;
}

a {
  color: var(--accent);
}

.is-hidden {
  display: none !important;
}

.auth-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(500px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

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

h1,
h2,
h3 {
  margin: 0;
}

.auth-card h1 {
  font-size: 1.5rem;
  line-height: 1.45;
}

.auth-copy {
  margin: 14px 0 22px;
  color: var(--muted);
}

.auth-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-button,
.secondary-button {
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 12px;
  font-weight: 700;
  cursor: pointer;
}

.primary-button {
  color: #ffffff;
  background: var(--accent);
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--accent-dark);
}

.secondary-button {
  color: var(--text);
  background: #ffffff;
  border-color: var(--line);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  background: #f8fafc;
  border-color: #b9c5d4;
}

.message {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.auth-card .message {
  margin-top: 16px;
}

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

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topbar {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}

.title-block h1 {
  font-size: 1.15rem;
  line-height: 1.35;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.text-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--accent-dark);
}

.user-chip {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  font-size: 0.82rem;
  background: #f8fafc;
}

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
}

.side-panel {
  min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
  overflow: auto;
}

.search-form {
  display: grid;
  gap: 8px;
}

.search-form label,
.legend-panel h2,
.context-panel h2 {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.search-row input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  background: var(--surface);
}

.search-row input:focus {
  outline: 2px solid rgba(0, 94, 168, 0.18);
  border-color: var(--accent);
}

.summary-panel,
.legend-panel,
.context-panel {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

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

.stat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  padding: 12px;
}

.stat-value {
  display: block;
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.1;
}

.stat-label {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.legend-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
  color: var(--text);
  font-size: 0.88rem;
}

.legend-list span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-dot {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  display: inline-block;
}

.legend-dot.app {
  background: var(--app);
}

.legend-dot.map {
  background: var(--map);
}

.legend-dot.vector {
  background: var(--vector);
}

.legend-dot.raster {
  background: var(--raster);
}

.context-panel p {
  min-height: 48px;
  margin: 8px 0 12px;
  color: var(--text);
  overflow-wrap: anywhere;
  font-size: 0.92rem;
}

.button-stack {
  display: grid;
  gap: 8px;
}

.graph-shell {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr;
}

.graph-toolbar {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.graph-board {
  position: relative;
  min-height: 0;
  overflow: auto;
  background: #f4f6f8;
}

#links,
#nodes {
  position: absolute;
  top: 0;
  left: 0;
}

#links {
  pointer-events: none;
}

.node {
  position: absolute;
  width: 260px;
  height: 136px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 6px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 8px 22px rgba(31, 41, 51, 0.08);
  cursor: pointer;
}

.node:hover,
.node:focus-visible {
  border-color: var(--accent);
  outline: 2px solid rgba(0, 94, 168, 0.16);
  outline-offset: 0;
}

.node.app {
  border-top: 4px solid var(--app);
}

.node.map {
  border-top: 4px solid var(--map);
}

.node.layer-vector {
  border-top: 4px solid var(--vector);
}

.node.layer-raster {
  border-top: 4px solid var(--raster);
}

.node.layer-unknown {
  border-top: 4px solid var(--unknown);
}

.node-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.node-badge,
.ref-count {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1;
}

.node-badge {
  color: #ffffff;
}

.node-badge.app {
  background: var(--app);
}

.node-badge.map {
  background: var(--map);
}

.node-badge.layer {
  background: var(--unknown);
}

.layer-vector .node-badge.layer {
  background: var(--vector);
}

.layer-raster .node-badge.layer {
  background: var(--raster);
}

.ref-count {
  color: var(--muted);
  background: #eef2f6;
}

.node h3 {
  min-height: 0;
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.35;
  overflow: hidden;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.node-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.node-actions {
  display: flex;
  justify-content: flex-end;
}

.open-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 10px;
  color: var(--accent);
  background: #ffffff;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 800;
}

.open-link:hover,
.open-link:focus-visible {
  border-color: var(--accent);
  background: #f8fafc;
}

.empty-state {
  position: absolute;
  top: 24px;
  left: 24px;
  width: min(420px, calc(100vw - 48px));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #ffffff;
  color: var(--muted);
}

@media (max-width: 900px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar-actions {
    justify-content: flex-start;
  }

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(560px, 1fr);
  }

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

  .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .legend-list {
    grid-template-columns: repeat(4, max-content);
    gap: 10px 14px;
  }
}

@media (max-width: 560px) {
  .auth-card {
    padding: 22px;
  }

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

  .stat-grid,
  .legend-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topbar-actions {
    width: 100%;
  }

  .user-chip {
    max-width: 100%;
  }
}