:root {
  --bg: #f3f6fb;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --line: #e4e9f2;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #0f172a;
  --primary-2: #7c3aed;
  --success: #16a34a;
  --warning: #ea580c;
  --danger: #dc2626;
  --shadow: 0 30px 60px -40px rgba(15,23,42,.35);
  --radius: 24px;
  --sidebar-open: 290px;
  --sidebar-collapsed: 96px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: radial-gradient(circle at top left, rgba(124,58,237,.08), transparent 22%), radial-gradient(circle at bottom right, rgba(34,211,238,.08), transparent 22%), var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
.app-shell { display: grid; grid-template-columns: var(--sidebar-open) minmax(0, 1fr); min-height: 100vh; transition: grid-template-columns .22s ease; }
.sidebar { padding: 24px; border-right: 1px solid var(--line); background: rgba(255,255,255,.82); backdrop-filter: blur(12px); transition: padding .22s ease, width .22s ease; overflow: visible; }
.brand-card { display: flex; gap: 14px; align-items: center; padding: 20px; background: var(--card); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.brand-card-login { margin-bottom: 12px; }
.brand-mark { width: 52px; height: 52px; border-radius: 18px; background: linear-gradient(135deg, #7c3aed, #d946ef, #06b6d4); color: #fff; display: grid; place-items: center; font-weight: 800; letter-spacing: .04em; flex: 0 0 auto; }
.eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: .22em; color: #94a3b8; margin-bottom: 4px; }
.brand-card h1 { margin: 0; font-size: 20px; }
.sidebar-nav { display: grid; gap: 8px; margin-top: 20px; }
.nav-link { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 18px; color: #475569; font-weight: 600; transition: background .18s ease, color .18s ease, box-shadow .18s ease; }
.nav-link:hover { background: #f8fafc; color: var(--text); }
.nav-link.is-active { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.nav-icon { display: inline-grid; width: 18px; place-items: center; flex: 0 0 18px; }
.nav-text { white-space: nowrap; }
.sidebar-note { margin-top: 20px; padding: 18px; background: #ecfdf5; color: #14532d; border: 1px solid #bbf7d0; border-radius: 24px; }
.sidebar-note p { margin: 8px 0 0; font-size: 14px; line-height: 1.6; }
.main-area { padding: 28px; min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 22px; }
.topbar h2 { margin: 4px 0 0; font-size: 32px; line-height: 1.1; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.btn { appearance: none; border: 0; border-radius: 18px; padding: 12px 16px; font-weight: 700; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { opacity: .93; }
.btn-outline { background: #fff; color: var(--text); border: 1px solid var(--line); }
.btn-outline:hover { background: #f8fafc; }
.btn-danger { background: #fff; color: var(--danger); border: 1px solid #fecaca; }
.btn-sm { padding: 10px 12px; font-size: 13px; border-radius: 14px; }
.alert { padding: 14px 16px; border-radius: 18px; margin-bottom: 18px; font-weight: 600; }
.alert-success { background: #ecfdf5; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.page-grid { display: grid; gap: 22px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { position: relative; overflow: hidden; padding: 20px; background: var(--card); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.stat-card::after { content: ""; position: absolute; inset: 0; opacity: .08; background: var(--accent, linear-gradient(135deg,#7c3aed,#06b6d4)); pointer-events: none; }
.stat-card .stat-value { position: relative; font-size: 34px; font-weight: 800; margin-top: 10px; }
.stat-card .stat-label, .stat-card .stat-note { position: relative; }
.stat-note { font-size: 12px; color: var(--success); margin-top: 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-header { display: flex; justify-content: space-between; align-items: start; gap: 14px; padding: 22px 22px 0; }
.card-header h3 { margin: 0; font-size: 22px; }
.card-header p { margin: 6px 0 0; color: var(--muted); }
.card-body { padding: 22px; }
.two-col { display: grid; grid-template-columns: 1.5fr .9fr; gap: 22px; }
.list-stack { display: grid; gap: 12px; }
.soft-item { display: flex; justify-content: space-between; gap: 14px; align-items: center; padding: 16px; background: #f8fafc; border: 1px solid var(--line); border-radius: 18px; }
.soft-item .meta { color: var(--muted); font-size: 14px; margin-top: 6px; }
.pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 7px 10px; font-size: 12px; font-weight: 700; border: 1px solid var(--line); background: #f1f5f9; color: #475569; }
.pill.success { background: #ecfdf5; border-color: #bbf7d0; color: #166534; }
.pill.warning { background: #fff7ed; border-color: #fed7aa; color: #c2410c; }
.pill.info { background: #ecfeff; border-color: #a5f3fc; color: #0f766e; }
.actions-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-card { padding: 22px; background: var(--card); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.form-card.compact { padding: 20px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form-grid.single { grid-template-columns: 1fr; }
.form-grid.three { grid-template-columns: repeat(3, 1fr); }
label span { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 700; color: #334155; }
input, select, textarea { width: 100%; padding: 13px 14px; border-radius: 16px; border: 1px solid var(--line); background: #fff; font: inherit; color: var(--text); outline: none; }
input:focus, select:focus, textarea:focus { border-color: #94a3b8; box-shadow: 0 0 0 3px rgba(148,163,184,.12); }
textarea { min-height: 120px; resize: vertical; }
.form-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 24px; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { padding: 15px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: #f8fafc; font-size: 12px; text-transform: uppercase; letter-spacing: .14em; color: #94a3b8; }
tbody tr:hover { background: #fcfdff; }
.split-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-note { margin-top: 22px; color: var(--muted); font-size: 13px; }
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 520px; background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: 34px; box-shadow: var(--shadow); padding: 24px; backdrop-filter: blur(12px); }
.login-copy { color: var(--muted); line-height: 1.6; }
.mindmap-board { position: relative; min-height: 580px; border: 1px solid var(--line); border-radius: 32px; background: radial-gradient(circle at top, rgba(124,58,237,.10), transparent 26%), radial-gradient(circle at bottom, rgba(34,211,238,.08), transparent 22%), linear-gradient(180deg, #fff, #f8fafc); overflow: hidden; }
.mindmap-board svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.node { position: absolute; transform: translate(-50%, -50%); min-width: 170px; background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); padding: 14px; }
.node.large { min-width: 220px; }
.node-badge { width: 40px; height: 40px; border-radius: 16px; background: linear-gradient(135deg, #7c3aed, #06b6d4); display: inline-block; vertical-align: middle; margin-right: 10px; }
.node-title { font-weight: 800; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.mt-0 { margin-top: 0; }
.gradient-violet { --accent: linear-gradient(135deg,#7c3aed,#d946ef); }
.gradient-cyan { --accent: linear-gradient(135deg,#06b6d4,#3b82f6); }
.gradient-emerald { --accent: linear-gradient(135deg,#10b981,#14b8a6); }
.gradient-orange { --accent: linear-gradient(135deg,#f59e0b,#f97316); }
.chip-group { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 16px; border: 1px solid var(--line); background: #fff; font-weight: 700; }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.subtle { color: var(--muted); font-size: 14px; }

.sidebar-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand-main { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-copy { min-width: 0; }
.sidebar-toggle { appearance: none; border: 1px solid var(--line); background: #fff; color: var(--text); border-radius: 16px; padding: 10px 12px; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font: inherit; font-weight: 700; flex-shrink: 0; transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.sidebar-toggle:hover { background: #f8fafc; border-color: #cbd5e1; }
.sidebar-toggle:active { transform: translateY(1px); }
.sidebar-toggle-icon { display: inline-grid; place-items: center; width: 18px; height: 18px; }

html.sidebar-collapsed .app-shell,
body.sidebar-collapsed .app-shell,
.app-shell.sidebar-collapsed {
  grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr) !important;
}

html.sidebar-collapsed .sidebar,
body.sidebar-collapsed .sidebar,
.sidebar.is-collapsed {
  padding: 18px 12px !important;
}

html.sidebar-collapsed .sidebar-head,
body.sidebar-collapsed .sidebar-head,
.sidebar.is-collapsed .sidebar-head {
  justify-content: center;
  padding: 14px 10px;
}

html.sidebar-collapsed .brand-main,
body.sidebar-collapsed .brand-main,
.sidebar.is-collapsed .brand-main {
  justify-content: center;
}

html.sidebar-collapsed .brand-copy,
html.sidebar-collapsed .sidebar-note,
html.sidebar-collapsed .sidebar-toggle-text,
html.sidebar-collapsed .nav-text,
body.sidebar-collapsed .brand-copy,
body.sidebar-collapsed .sidebar-note,
body.sidebar-collapsed .sidebar-toggle-text,
body.sidebar-collapsed .nav-text,
.sidebar.is-collapsed .brand-copy,
.sidebar.is-collapsed .sidebar-note,
.sidebar.is-collapsed .sidebar-toggle-text,
.sidebar.is-collapsed .nav-text {
  display: none !important;
}

html.sidebar-collapsed .brand-mark,
body.sidebar-collapsed .brand-mark,
.sidebar.is-collapsed .brand-mark {
  margin: 0;
}

html.sidebar-collapsed .sidebar-nav,
body.sidebar-collapsed .sidebar-nav,
.sidebar.is-collapsed .sidebar-nav {
  justify-items: center;
}

html.sidebar-collapsed .nav-link,
body.sidebar-collapsed .nav-link,
.sidebar.is-collapsed .nav-link {
  width: 56px;
  height: 56px;
  padding: 0;
  justify-content: center;
  position: relative;
}

html.sidebar-collapsed .nav-icon,
body.sidebar-collapsed .nav-icon,
.sidebar.is-collapsed .nav-icon {
  width: 20px;
  font-size: 16px;
  margin: 0;
}

html.sidebar-collapsed .sidebar-toggle,
body.sidebar-collapsed .sidebar-toggle,
.sidebar.is-collapsed .sidebar-toggle {
  width: 44px;
  height: 44px;
  padding: 0;
  justify-content: center;
  border-radius: 14px;
}

html.sidebar-collapsed .nav-link::after,
body.sidebar-collapsed .nav-link::after,
.sidebar.is-collapsed .nav-link::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: #0f172a;
  color: #fff;
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  box-shadow: var(--shadow);
  z-index: 50;
}

html.sidebar-collapsed .nav-link:hover::after,
html.sidebar-collapsed .nav-link:focus-visible::after,
body.sidebar-collapsed .nav-link:hover::after,
body.sidebar-collapsed .nav-link:focus-visible::after,
.sidebar.is-collapsed .nav-link:hover::after,
.sidebar.is-collapsed .nav-link:focus-visible::after {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 1200px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col, .grid-2 { grid-template-columns: 1fr; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  html.sidebar-collapsed .app-shell,
  body.sidebar-collapsed .app-shell,
  .app-shell.sidebar-collapsed {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 780px) {
  .main-area { padding: 18px; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .stats-grid, .form-grid, .form-grid.three { grid-template-columns: 1fr; }
  .soft-item { flex-direction: column; align-items: flex-start; }
}