:root {
  --bg-1: #07111f;
  --bg-2: #0d1a2c;
  --panel: rgba(10, 20, 36, 0.9);
  --line: rgba(255,255,255,0.09);
  --text: #f6f8ff;
  --muted: #9bb0cf;
  --accent: #7c5cff;
  --accent-2: #2dd4bf;
  --danger: #ff7070;
  --warning: #ffb347;
  --shadow: 0 24px 70px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 14%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 26%),
    radial-gradient(circle at 82% 16%, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent 25%),
    linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  padding: 22px;
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { border: 0; }

.page {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.panel,
.stage {
  background: var(--panel);
  border-radius: 28px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.panel {
  position: sticky;
  top: 22px;
  padding: 24px;
}

.stage {
  padding: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.08);
  font-weight: 700;
  color: #e7efff;
}

h1 {
  margin: 14px 0 12px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.06;
}

h2, h3, p { margin-top: 0; }
.lead, .subtle, .tips li, .meta-line { color: var(--muted); line-height: 1.75; }

.actions,
.inline-actions,
.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn,
.ghost-btn,
.mini-btn {
  min-height: 46px;
  padding: 0 16px;
  border-radius: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  transition: transform .18s ease, filter .18s ease, background .18s ease, box-shadow .18s ease;
}

.btn:hover,
.ghost-btn:hover,
.mini-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn {
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, white));
  box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 32%, transparent);
}

.ghost-btn {
  color: var(--text);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.08);
}

.mini-btn {
  min-height: 38px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: .92rem;
  color: var(--text);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
  margin: 18px 0;
}

.stat {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.06);
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: .92rem;
}

.stat strong {
  display: block;
  font-size: 1.55rem;
  line-height: 1.1;
  margin-top: 6px;
}

.canvas-shell,
.board-shell,
.widget-shell {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 24px;
  padding: 14px;
}

.canvas-wrap {
  position: relative;
  width: 100%;
}

canvas {
  display: block;
  width: 100%;
  max-width: 100%;
  border-radius: 18px;
  background: rgba(4,9,18,0.82);
  border: 1px solid rgba(255,255,255,0.08);
}

.message {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent-2) 10%, transparent));
  border: 1px solid rgba(255,255,255,0.08);
  font-weight: 700;
}

.tips {
  margin: 16px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.legend-item,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: #ebf2ff;
  font-size: .92rem;
}

.input,
select.input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  outline: none;
}

.grid-board {
  display: grid;
  gap: 8px;
}

.card-list {
  display: grid;
  gap: 12px;
}

.card-item {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.06);
}

.modal-note {
  font-size: .92rem;
  color: var(--muted);
}

.table-like {
  width: 100%;
  border-collapse: collapse;
}

.table-like td,
.table-like th {
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 10px 8px;
  text-align: left;
}

.hidden { display: none !important; }
.center { text-align: center; }
.good { color: #8ff7cf; }
.warn { color: #ffd08a; }
.bad { color: #ff9f9f; }

@media (max-width: 980px) {
  .page { grid-template-columns: 1fr; }
  .panel { position: static; }
}

@media (max-width: 680px) {
  body { padding: 14px; }
  .panel, .stage { padding: 16px; border-radius: 22px; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .btn, .ghost-btn { width: 100%; }
}