:root{
  --color-primary:#0000ff;
  --color-accent:#7c3aed;
  --color-sidebar:#000000;
  --color-sidebar-text:#d1d5db;
  --color-sidebar-hover:#1f2937;
  --color-sidebar-active-text:#ffffff;
  --color-topbar-bg:#ffffff;
  --color-topbar-text:#374151;
  --color-page-bg:#f3f4f6;
  --color-card-bg:#ffffff;
  --color-text-primary:#111827;
  --color-text-secondary:#6b7280;
  --color-border:#e5e7eb;
  --color-cal-scheduled:#3b82f6;
  --color-cal-attended:#10b981;
  --color-cal-cancelled:#ef4444;
  --color-tag-paid:#059669;
  --color-tag-partial:#eab308;
  --color-tag-debt:#ef4444;
}
*{box-sizing:border-box}
body{font-family:'Figtree',ui-sans-serif,system-ui,sans-serif;background:var(--color-page-bg);color:var(--color-text-primary);margin:0}
a{text-decoration:none;color:inherit}

/* ── Demo banner ── */
.demo-banner{background:linear-gradient(90deg,#7c3aed,#4f46e5);color:#fff;font-size:12px;font-weight:700;text-align:center;padding:6px 12px;letter-spacing:.02em}
.demo-banner b{text-decoration:underline}

/* ── Shell layout ── */
.shell{display:flex;height:calc(100vh - 30px)}
.sidebar{width:256px;flex-shrink:0;background:var(--color-sidebar);color:var(--color-sidebar-text);display:flex;flex-direction:column;height:100%;overflow-y:auto}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid #1f2937}
.sidebar-brand img{height:32px;width:auto}
.sidebar-brand span{font-weight:700;color:#fff;font-size:14px}
.sidebar-nav{flex:1;padding:16px;overflow-y:auto}
.sidebar-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.sidebar-link{display:flex;align-items:center;gap:12px;padding:8px;border-radius:8px;font-size:14px;color:var(--color-sidebar-text);cursor:pointer;transition:background .1s}
.sidebar-link:hover{background:var(--color-sidebar-hover);color:#fff}
.sidebar-link.active{background:var(--color-primary);color:var(--color-sidebar-active-text)}
.sidebar-link svg, .sidebar-group-btn svg, .sidebar-logout svg{width:22px;height:22px;flex-shrink:0}
.sidebar-group-btn{display:flex;align-items:center;gap:12px;padding:8px;border-radius:8px;font-size:14px;width:100%;background:none;border:none;color:var(--color-sidebar-text);cursor:pointer;text-align:left}
.sidebar-group-btn:hover{background:var(--color-sidebar-hover);color:#fff}
.sidebar-group-btn svg.chev{width:18px;height:18px;margin-left:auto;transition:transform .15s}
.sidebar-group-btn.open svg.chev{transform:rotate(180deg)}
.sidebar-subnav{display:none;flex-direction:column;gap:2px;padding:6px 0 6px 44px}
.sidebar-subnav.open{display:flex}
.sidebar-subnav a{padding:6px 8px;font-size:13px;color:#9ca3af;border-radius:6px}
.sidebar-subnav a:hover{color:#fff}
.sidebar-user{border-top:1px solid #1f2937;padding:16px;font-size:13px}
.sidebar-user-name{color:#fff;font-weight:600}
.sidebar-user-role{color:#9ca3af;font-size:12px}
.sidebar-logout{display:flex;align-items:center;gap:8px;margin-top:10px;color:var(--color-sidebar-text);font-size:13px;cursor:pointer}
.sidebar-logout:hover{color:#fff}

.main{flex:1;display:flex;flex-direction:column;overflow:hidden}
.topbar{background:var(--color-topbar-bg);border-bottom:1px solid var(--color-border);padding:20px 32px}
.topbar h1{margin:0;font-size:22px;font-weight:700;color:var(--color-topbar-text)}
.content{flex:1;overflow-y:auto;padding:32px}

/* ── Cards / tables (Tailwind-ish utility replacements) ── */
.card{background:var(--color-card-bg);border-radius:10px;box-shadow:0 1px 2px rgba(0,0,0,.06);padding:24px}
.grid{display:grid;gap:24px}
.grid-cols-3{grid-template-columns:repeat(3,1fr)}
.grid-cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid-cols-3,.grid-cols-2{grid-template-columns:1fr}.sidebar{position:fixed;z-index:40;transform:translateX(-100%);transition:transform .2s}.sidebar.open{transform:translateX(0)}.mobile-toggle{display:inline-flex !important}}
.stat-label{font-size:13px;color:var(--color-text-secondary)}
.stat-value{font-size:26px;font-weight:700;margin-top:4px}
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--color-primary);color:#fff;font-weight:700;font-size:13px;padding:10px 16px;border-radius:8px;border:none;cursor:pointer}
.btn:hover{opacity:.9}
.btn-outline{background:#fff;color:var(--color-text-primary);border:1px solid var(--color-border)}
.btn-sm{padding:6px 10px;font-size:12px}
.btn-danger{background:var(--color-tag-debt)}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);border-bottom:1px solid var(--color-border);padding:10px 12px}
tbody td{padding:12px;border-bottom:1px solid var(--color-border)}
tbody tr:hover{background:#f9fafb}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700}
.badge-paid{background:#d1fae5;color:var(--color-tag-paid)}
.badge-partial{background:#fef9c3;color:#92610a}
.badge-debt{background:#fee2e2;color:var(--color-tag-debt)}
.badge-scheduled{background:#dbeafe;color:#1d4ed8}
.badge-attended{background:#d1fae5;color:#047857}
.badge-cancelled{background:#fee2e2;color:#b91c1c}
.badge-web{background:#ede9fe;color:#6d28d9}
.modal-overlay{position:fixed;inset:0;background:rgba(17,24,39,.6);display:none;align-items:center;justify-content:center;z-index:100;padding:16px}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:12px;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;padding:28px}
.modal h3{margin:0 0 20px;font-size:18px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--color-text-primary)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--color-border);border-radius:8px;font-size:14px;font-family:inherit}
.form-row{display:flex;gap:12px}
.form-row>.form-group{flex:1}
.empty-state{text-align:center;padding:48px;color:var(--color-text-secondary)}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}