:root {
  --bg: #0a0e1a;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-solid: #131a2b;
  --border: rgba(255, 255, 255, 0.10);
  --text: #e8ecf5;
  --muted: #97a3bd;
  --accent: #22d3ee;
  --accent-2: #818cf8;
  --accent-soft: rgba(34, 211, 238, 0.14);
  --accent-glow: rgba(34, 211, 238, 0.35);
  --on-accent: #06121f;
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.14);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.14);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.14);
  --sidebar-width: 240px;
  --radius: 12px;
  --ease-lift: cubic-bezier(0.22, 1, 0.36, 1);
}

@supports not (backdrop-filter: blur(1px)) {
  .card, .stat-tile, .account-tile, .funnel-stage, .login-card, .sidebar, .topbar {
    background: var(--surface-solid) !important;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  background:
    radial-gradient(1100px 700px at 85% -10%, rgba(129, 140, 248, 0.13), transparent 60%),
    radial-gradient(900px 600px at -10% 105%, rgba(34, 211, 238, 0.10), transparent 55%),
    var(--bg);
  background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
}

@media (max-width: 900px) {
  .sidebar { width: 72px; padding: 16px 8px; }
  .brand-sub, .nav-link { display: none; }
  .nav-group-label { display: none; }
}

.brand { font-weight: 700; font-size: 18px; padding: 0 8px 20px; }
.brand-sub { display: block; font-weight: 400; font-size: 12px; color: var(--muted); margin-top: 2px; }

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-group-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); padding: 12px 8px 4px;
}
.nav-link {
  padding: 9px 10px 9px 12px; border-radius: 8px; color: var(--text);
  font-size: 14px; border-left: 2px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.nav-link:hover { background: var(--accent-soft); text-decoration: none; }
.nav-link.active {
  background: var(--accent-soft); color: var(--accent); font-weight: 600;
  border-left-color: var(--accent);
}

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; border-bottom: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.topbar-title { font-size: 16px; font-weight: 600; }
.logout-form { display: flex; align-items: center; gap: 12px; margin: 0; }
.topbar-user { color: var(--muted); font-size: 13px; }

.content {
  padding: 24px 28px; max-width: 1200px; width: 100%; margin: 0 auto;
  animation: rise 0.28s var(--ease-lift);
}
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
}

.card {
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px; margin-bottom: 18px;
}
.card h2 { margin: 0 0 14px; font-size: 15px; font-weight: 600; }
.card-count { color: var(--muted); font-weight: 400; }
.card-note { color: var(--muted); margin: 0; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.card-header h2 { margin: 0; }
.card-error { color: var(--danger); background: var(--danger-soft); border-color: var(--danger); }

.stat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px; margin-bottom: 18px;
}
.stat-tile {
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
  transition: transform 0.25s var(--ease-lift), border-color 0.25s ease;
}
.stat-tile:hover { transform: translateY(-2px); border-color: var(--accent-glow); }
.stat-number { font-size: 28px; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 4px; }

.hub-card {
  background: var(--accent-soft);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-color: var(--accent-glow);
  box-shadow: 0 0 0 1px var(--accent-glow) inset, 0 8px 32px rgba(0, 0, 0, 0.35);
}
.hub-header { display: flex; align-items: center; gap: 16px; }
.hub-avatar, .account-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--on-accent); font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.hub-name { font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.hub-meta { color: var(--muted); font-size: 13px; margin-top: 4px; display: flex; align-items: center; gap: 6px; }
.hub-link { margin-left: auto; }
.account-summary { margin: 14px 0 0; color: var(--text); }

.account-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.account-tile {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; text-align: center; color: var(--text);
  transition: transform 0.25s var(--ease-lift), border-color 0.25s ease, background-color 0.25s ease;
}
.account-tile:hover {
  border-color: var(--accent-glow); text-decoration: none;
  background: var(--accent-soft); transform: translateY(-2px);
}
.account-tile-name { font-weight: 600; margin-top: 8px; font-size: 13px; }
.account-tile-meta { margin-top: 6px; display: flex; justify-content: center; gap: 4px; flex-wrap: wrap; }

.funnel { display: flex; gap: 10px; flex-wrap: wrap; }
.funnel-stage {
  flex: 1; min-width: 90px; text-align: center;
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 8px;
}
.funnel-count { font-size: 22px; font-weight: 700; }
.funnel-label { color: var(--muted); font-size: 12px; text-transform: capitalize; margin-top: 2px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table-wrap { overflow-x: auto; }
.data-table th, .data-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.data-table tbody tr:hover { background: rgba(255, 255, 255, 0.03); }

.pill {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600; text-transform: capitalize;
}
.pill-muted { background: rgba(255, 255, 255, 0.08); color: var(--muted); }
.pill-accent { background: var(--accent-soft); color: var(--accent); }
.pill-success { background: var(--success-soft); color: var(--success); }
.pill-warning { background: var(--warning-soft); color: var(--warning); }
.pill-danger { background: var(--danger-soft); color: var(--danger); }
.badge-placeholder { border: 1px dashed var(--muted); }

.empty-state { padding: 22px 0; text-align: center; color: var(--muted); }
.empty-glyph { font-size: 20px; margin-bottom: 6px; }
.empty-message { margin: 0; font-weight: 500; }
.empty-hint { margin: 4px 0 0; font-size: 13px; }

.activity-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.activity-list li { font-size: 14px; }
.activity-time { color: var(--muted); font-size: 12px; }

.btn {
  display: inline-block; padding: 8px 16px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 13px; font-weight: 600; cursor: pointer;
  transition: transform 0.25s var(--ease-lift), box-shadow 0.25s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: var(--on-accent);
}
.btn-primary:hover {
  text-decoration: none; transform: translateY(-1px);
  box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-secondary { background: var(--accent-soft); border-color: var(--accent-glow); color: var(--accent); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: var(--accent-soft); }
.btn-block { width: 100%; }

.back-link { display: inline-block; margin-bottom: 14px; font-size: 13px; }

/* Login page */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background:
    radial-gradient(1100px 700px at 85% -10%, rgba(129, 140, 248, 0.13), transparent 60%),
    radial-gradient(900px 600px at -10% 105%, rgba(34, 211, 238, 0.10), transparent 55%),
    var(--bg);
}
.login-card {
  background: var(--surface);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px; width: 100%; max-width: 340px;
}
.login-brand { font-size: 22px; font-weight: 700; text-align: center; }
.login-sub { color: var(--muted); text-align: center; margin-bottom: 20px; }
.login-form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.field-label { color: var(--muted); }
.field input {
  padding: 9px 10px; border-radius: 8px; border: 1px solid var(--border);
  font-size: 14px; font-family: inherit;
  background: rgba(255, 255, 255, 0.06); color: var(--text);
}
.field input:focus-visible { border-color: var(--accent); }
.login-hint { color: var(--muted); font-size: 13px; text-align: center; }
.login-hint code {
  background: rgba(255, 255, 255, 0.08); color: var(--text);
  padding: 1px 5px; border-radius: 4px; font-size: 12px;
}
.alert { padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 14px; }
.alert-error { background: var(--danger-soft); color: var(--danger); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}