MathLab/task-board/frontend/css/styles.css

:root {
  --bg: #f7eef2;
  --panel: #fff8fb;
  --panel-soft: #f4e8ee;
  --line: #dec6d1;
  --text: #4d3642;
  --text-dim: #7d6270;
  --shadow: 0 12px 34px rgba(122, 81, 100, 0.14);
  --pending: #b8aab2;
  --in-progress: #d68ba8;
  --completed: #8eb9a3;
  --bug: #c98087;
  --link: #ceb5c0;
  --highlight: #f5dfe8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--text);
  background:
    radial-gradient(circle at 12% -12%, #fff8fb 0, transparent 35%),
    radial-gradient(circle at 84% 0, #f6e8ef 0, transparent 34%),
    var(--bg);
  font-family: "LXGW WenKai", "Noto Sans SC", "Avenir Next", sans-serif;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
}

.top-bar {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 16px;
  align-items: end;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid #ecd7e2;
  background: linear-gradient(140deg, #fff8fb 0%, #f7e9f0 100%);
  box-shadow: var(--shadow);
}

.brand-block h1 {
  margin: 0 0 4px;
  letter-spacing: 0.02em;
  font-size: clamp(1.2rem, 2vw, 1.82rem);
}

.brand-block p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.93rem;
}

.conversation-filter {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.conversation-filter label {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.filter-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

select,
button {
  font: inherit;
}

select {
  border: 1px solid #d8bcc9;
  border-radius: 12px;
  background: #fff;
  padding: 10px 12px;
  color: var(--text);
}

select:focus {
  outline: 2px solid #f2cadb;
  outline-offset: 1px;
}

.btn {
  border: 1px solid #d3b0c0;
  border-radius: 12px;
  background: #fff5fa;
  color: var(--text);
  padding: 9px 12px;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: #ffeef6;
  border-color: #c895ab;
}

.toolbar-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(98px, 1fr));
  gap: 8px;
}

.board-layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 16px;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.panel-card {
  background: var(--panel);
  border: 1px solid #ead2dd;
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 10px 20px rgba(123, 79, 103, 0.09);
}

.panel-card h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.legend-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.legend-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.91rem;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

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

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

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

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

.stats-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.stats-list div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 11px;
  background: var(--panel-soft);
  padding: 8px 10px;
}

.stats-list dt {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.86rem;
}

.stats-list dd {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.debug-card {
  flex: 1;
  min-height: 0;
}

.debug-panel {
  max-height: 38vh;
  overflow: auto;
  padding-right: 4px;
}

.debug-item h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.debug-item p {
  margin: 0 0 7px;
  color: var(--text-dim);
  line-height: 1.38;
  word-break: break-word;
  font-size: 0.83rem;
}

.empty-text {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 620px;
  border: 1px solid #eacfdc;
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
  touch-action: none;
  background:
    linear-gradient(145deg, rgba(255, 246, 251, 0.95) 0%, rgba(248, 233, 240, 0.93) 100%);
}

#mindmapSvg {
  width: 100%;
  height: 100%;
}

.canvas-hint {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-size: 0.8rem;
  color: #826674;
  background: rgba(255, 249, 252, 0.84);
  border: 1px solid #e6cdda;
  border-radius: 999px;
  padding: 5px 10px;
}

.link-path {
  fill: none;
  stroke: var(--link);
  stroke-width: 2;
  opacity: 0.9;
}

.link-path.status-in-progress {
  stroke: #c98ea5;
}

.link-path.status-completed {
  stroke: #96baa6;
}

.link-path.status-bug {
  stroke: #ca8f98;
}

.link-path.type-merge {
  stroke-dasharray: 7 6;
}

.node-group {
  cursor: pointer;
}

.node-card {
  fill: #fff8fb;
  stroke: #dec4cf;
  stroke-width: 1.4;
  filter: drop-shadow(0 10px 16px rgba(116, 75, 96, 0.12));
}

.node-group:hover .node-card {
  fill: #fff;
  stroke: #c995ac;
}

.node-group.selected .node-card {
  fill: var(--highlight);
  stroke: #b66d8a;
  stroke-width: 2;
}

.node-status-dot {
  stroke: rgba(255, 255, 255, 0.92);
  stroke-width: 1;
}

.node-group.status-pending .node-status-dot {
  fill: var(--pending);
}

.node-group.status-in-progress .node-status-dot {
  fill: var(--in-progress);
}

.node-group.status-completed .node-status-dot {
  fill: var(--completed);
}

.node-group.status-bug .node-status-dot {
  fill: var(--bug);
}

.node-title {
  fill: var(--text);
  font-size: 15px;
  font-weight: 600;
}

.node-subtitle {
  fill: var(--text-dim);
  font-size: 12px;
}

.node-subtitle.muted {
  fill: #8a6d7b;
}

.progress-ring {
  fill: none;
  stroke: #cc8fa7;
  stroke-width: 2;
  stroke-dasharray: 7 5;
  animation: progressDash 1.25s linear infinite;
  filter: url(#pulseGlow);
}

.node-group.status-bug .node-card {
  stroke: #c9868f;
  filter: drop-shadow(0 0 8px rgba(201, 120, 128, 0.42));
}

@keyframes progressDash {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -48;
  }
}

.empty-state {
  fill: #7f6875;
  font-size: 22px;
}

@media (max-width: 1180px) {
  .top-bar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

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

  .side-panel {
    order: 2;
  }

  .canvas-panel {
    order: 1;
  }
}

@media (max-width: 700px) {
  .app-shell {
    padding: 10px;
    gap: 10px;
  }

  .toolbar-actions {
    grid-template-columns: 1fr 1fr;
  }

  .filter-actions {
    grid-template-columns: 1fr;
  }

  .canvas-wrapper {
    min-height: 72vh;
  }
}