:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #657089;
  --line: #dbe1ec;
  --primary: #2357ff;
  --primary-soft: #e8eeff;
  --danger: #d63b3b;
  --danger-soft: #ffe7e7;
  --success: #0f8a4b;
  --success-soft: #e8f7ef;
  --shadow: 0 14px 36px rgba(19, 36, 77, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #eef3ff 0%, var(--bg) 240px);
  color: var(--text);
}
.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 24px;
}
.hero h1 {
  margin: 8px 0 10px;
  font-size: 40px;
  line-height: 1.1;
}
.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.layout {
  display: grid;
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 20px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.section-head h2, .section-head h3 {
  margin: 0;
  font-size: 20px;
}
.section-head.nested {
  margin-top: 20px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
}
.tag.success { color: var(--success); background: var(--success-soft); }
.tag.muted { color: var(--muted); background: #f0f3f9; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.form-grid.inline-form {
  grid-template-columns: 2fr 1fr auto;
}
.form-grid label.full { grid-column: 1 / -1; }
label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}
input, select, button {
  font: inherit;
}
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus {
  outline: 2px solid rgba(35, 87, 255, 0.18);
  border-color: rgba(35, 87, 255, 0.5);
}
button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
button:disabled {
  opacity: .55;
  cursor: not-allowed;
}
.ghost-btn {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}
.ghost-btn.danger {
  color: var(--danger);
  border-color: #f2c0c0;
  background: #fff;
}
.hint {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.kv-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.kv-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.stack-list {
  display: grid;
  gap: 12px;
}
.stack-list.empty {
  color: var(--muted);
  padding: 16px 4px;
}
.org-item, .member-item {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.org-item.active {
  border-color: rgba(35, 87, 255, 0.45);
  background: var(--primary-soft);
}
.meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.chip {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  background: #f1f4fa;
  color: var(--muted);
  font-size: 12px;
}
.detail-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}
.tab-btn {
  background: #f0f3f9;
  color: var(--muted);
}
.tab-btn.active {
  background: var(--primary);
  color: #fff;
}
.tab-panel.hidden, .hidden { display: none !important; }
.member-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.status-toggle {
  min-width: 90px;
}
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  min-width: 220px;
  max-width: 420px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(23, 32, 51, 0.94);
  color: #fff;
  box-shadow: var(--shadow);
}
@media (max-width: 860px) {
  .hero { flex-direction: column; }
  .form-grid, .form-grid.inline-form, .kv-grid {
    grid-template-columns: 1fr;
  }
}