/* ============ SDChat · shadcn/ui demo design system ============ */
:root{
  --background:0 0% 100%; --foreground:240 10% 3.9%;
  --card:0 0% 100%; --card-foreground:240 10% 3.9%;
  --popover:0 0% 100%; --popover-foreground:240 10% 3.9%;
  --primary:240 5.9% 10%; --primary-foreground:0 0% 98%;
  --secondary:240 4.8% 95.9%; --secondary-foreground:240 5.9% 10%;
  --muted:240 4.8% 95.9%; --muted-foreground:240 3.8% 46.1%;
  --accent:240 4.8% 95.9%; --accent-foreground:240 5.9% 10%;
  --destructive:0 72% 51%; --destructive-foreground:0 0% 98%;
  --border:240 5.9% 90%; --input:240 5.9% 90%; --ring:240 5.9% 10%;
  --radius:0.65rem;
  --blue:221 83% 53%; --green:142 71% 45%; --violet:262 83% 58%; --amber:38 92% 50%; --rose:346 77% 50%;
  --shadow-sm:0 1px 2px hsl(var(--foreground)/.05);
  --shadow-md:0 1px 2px hsl(var(--foreground)/.05),0 8px 24px -12px hsl(var(--foreground)/.18);
}
[data-theme="dark"]{
  --background:240 10% 3.9%; --foreground:0 0% 98%;
  --card:240 8% 6%; --card-foreground:0 0% 98%;
  --popover:240 10% 3.9%; --popover-foreground:0 0% 98%;
  --primary:0 0% 98%; --primary-foreground:240 5.9% 10%;
  --secondary:240 3.7% 15.9%; --secondary-foreground:0 0% 98%;
  --muted:240 3.7% 15.9%; --muted-foreground:240 5% 64.9%;
  --accent:240 3.7% 15.9%; --accent-foreground:0 0% 98%;
  --destructive:0 62% 46%; --destructive-foreground:0 0% 98%;
  --border:240 3.7% 15.9%; --input:240 3.7% 15.9%; --ring:240 4.9% 83.9%;
  --blue:217 91% 60%; --green:142 71% 45%; --violet:263 70% 65%; --amber:38 92% 55%; --rose:346 84% 60%;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:hsl(var(--background)); color:hsl(var(--foreground));
  font-family:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  -webkit-font-smoothing:antialiased; letter-spacing:-.011em; line-height:1.5; font-size:14px;
}
a{color:inherit;text-decoration:none}
.ic{width:1em;height:1em;display:inline-block;vertical-align:middle;flex:none}
.mono{font-variant-numeric:tabular-nums}

/* ---------- top bar / nav ---------- */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:6px;
  padding:0 clamp(14px,4vw,26px);height:56px;border-bottom:1px solid hsl(var(--border));
  background:hsl(var(--background)/.85);backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15px;margin-right:6px}
.brand-logo{width:28px;height:28px;border-radius:8px;background:hsl(var(--primary));color:hsl(var(--primary-foreground));display:grid;place-items:center;font-weight:800;font-size:12px}
.nav{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 12px;border-radius:calc(var(--radius) - 3px);
  font-size:13.5px;font-weight:500;color:hsl(var(--muted-foreground));white-space:nowrap;transition:.13s}
.nav a:hover{background:hsl(var(--accent));color:hsl(var(--foreground))}
.nav a.active{background:hsl(var(--secondary));color:hsl(var(--foreground));font-weight:600}
.spacer{flex:1}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:36px;padding:0 14px;
  border-radius:calc(var(--radius) - 2px);font-size:13.5px;font-weight:500;cursor:pointer;
  border:1px solid transparent;transition:.14s;white-space:nowrap;font-family:inherit;line-height:1}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-sm{height:30px;padding:0 10px;font-size:12.5px}
.btn-outline{border-color:hsl(var(--border));background:hsl(var(--background));color:hsl(var(--foreground))}
.btn-outline:hover:not(:disabled){background:hsl(var(--accent))}
.btn-ghost{background:transparent;color:hsl(var(--foreground))}
.btn-ghost:hover:not(:disabled){background:hsl(var(--accent))}
.btn-primary{background:hsl(var(--primary));color:hsl(var(--primary-foreground))}
.btn-primary:hover:not(:disabled){background:hsl(var(--primary)/.9)}
.btn-destructive{background:hsl(var(--destructive));color:hsl(var(--destructive-foreground))}
.btn-icon{width:36px;padding:0}.btn-icon.btn-sm{width:30px}

/* ---------- layout ---------- */
.wrap{max-width:1120px;margin:0 auto;padding:clamp(18px,3.5vw,32px) clamp(14px,4vw,26px) 72px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
h1{margin:0 0 5px;font-size:25px;font-weight:700;letter-spacing:-.02em}
.sub{margin:0;color:hsl(var(--muted-foreground));font-size:14px}
.section-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:hsl(var(--muted-foreground));margin:26px 0 12px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 9px;border-radius:999px;
  font-size:11.5px;font-weight:600;border:1px solid hsl(var(--border));background:hsl(var(--secondary));color:hsl(var(--secondary-foreground))}
.badge.outline{background:transparent}
.badge.blue{background:hsl(var(--blue)/.12);color:hsl(var(--blue));border-color:hsl(var(--blue)/.25)}
.badge.green{background:hsl(var(--green)/.14);color:hsl(var(--green));border-color:hsl(var(--green)/.3)}
.badge.amber{background:hsl(var(--amber)/.16);color:hsl(var(--amber));border-color:hsl(var(--amber)/.3)}
.badge.rose{background:hsl(var(--rose)/.14);color:hsl(var(--rose));border-color:hsl(var(--rose)/.3)}
.badge.violet{background:hsl(var(--violet)/.14);color:hsl(var(--violet));border-color:hsl(var(--violet)/.3)}
.tag{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:6px;font-size:11.5px;font-weight:500;
  background:hsl(var(--secondary));color:hsl(var(--secondary-foreground));border:1px solid hsl(var(--border))}

/* ---------- cards ---------- */
.card{border:1px solid hsl(var(--border));border-radius:var(--radius);background:hsl(var(--card));box-shadow:var(--shadow-sm)}
.card-pad{padding:18px}
.card-head{padding:16px 18px;border-bottom:1px solid hsl(var(--border))}
.card-head h3{margin:0;font-size:15px;font-weight:600;letter-spacing:-.01em}
.card-head p{margin:3px 0 0;color:hsl(var(--muted-foreground));font-size:13px}

/* stat cards */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:6px}
.stat{border:1px solid hsl(var(--border));border-radius:var(--radius);background:hsl(var(--card));padding:17px 18px 15px;box-shadow:var(--shadow-sm)}
.stat-top{display:flex;align-items:center;justify-content:space-between;color:hsl(var(--muted-foreground));font-size:13px;font-weight:500}
.stat-top .ic{font-size:16px}
.stat b{display:block;margin-top:9px;font-size:24px;font-weight:700;letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums}
.stat small{display:block;margin-top:4px;color:hsl(var(--muted-foreground));font-size:12px}

/* nav cards (hub) */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.navcard{position:relative;display:flex;flex-direction:column;border:1px solid hsl(var(--border));border-radius:var(--radius);
  background:hsl(var(--card));padding:18px;min-height:150px;transition:.15s;cursor:pointer;box-shadow:var(--shadow-sm)}
.navcard:hover{border-color:hsl(var(--ring)/.4);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.navcard h3{margin:0 0 5px;font-size:15.5px;font-weight:600}
.navcard p{margin:0;color:hsl(var(--muted-foreground));font-size:13px;line-height:1.45}
.navcard .pill{margin-top:auto;padding-top:14px;display:flex;gap:6px;flex-wrap:wrap}
.navcard .arrow{position:absolute;top:18px;right:16px;color:hsl(var(--muted-foreground));opacity:0;transform:translateX(-4px);transition:.15s}
.navcard:hover .arrow{opacity:1;transform:translateX(0)}
.card-ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-size:20px;margin-bottom:14px;background:hsl(var(--muted));color:hsl(var(--foreground))}
.card-ico.blue{background:hsl(var(--blue)/.12);color:hsl(var(--blue))}
.card-ico.green{background:hsl(var(--green)/.14);color:hsl(var(--green))}
.card-ico.violet{background:hsl(var(--violet)/.14);color:hsl(var(--violet))}
.card-ico.amber{background:hsl(var(--amber)/.16);color:hsl(var(--amber))}
.card-ico.rose{background:hsl(var(--rose)/.14);color:hsl(var(--rose))}

/* ---------- tabs ---------- */
.tabs{display:inline-flex;gap:2px;padding:4px;background:hsl(var(--muted));border-radius:calc(var(--radius));margin-bottom:18px;flex-wrap:wrap}
.tabs button{height:32px;padding:0 13px;border:0;background:transparent;color:hsl(var(--muted-foreground));
  font-size:13px;font-weight:500;border-radius:calc(var(--radius) - 3px);cursor:pointer;font-family:inherit;transition:.13s}
.tabs button:hover{color:hsl(var(--foreground))}
.tabs button.active{background:hsl(var(--background));color:hsl(var(--foreground));font-weight:600;box-shadow:var(--shadow-sm)}
.tabpane{display:none}.tabpane.active{display:block}

/* ---------- table ---------- */
.table-wrap{border:1px solid hsl(var(--border));border-radius:var(--radius);overflow:auto;background:hsl(var(--card))}
table.tbl{width:100%;border-collapse:collapse;font-size:13px}
table.tbl th{text-align:left;padding:11px 14px;font-size:12px;font-weight:600;color:hsl(var(--muted-foreground));
  border-bottom:1px solid hsl(var(--border));white-space:nowrap;background:hsl(var(--card))}
table.tbl td{padding:11px 14px;border-bottom:1px solid hsl(var(--border));vertical-align:middle}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tbody tr:hover{background:hsl(var(--muted)/.5)}
.cell-name{font-weight:600}
.cell-sub{color:hsl(var(--muted-foreground));font-size:12px;margin-top:1px}

/* shift chips (schedule) */
.shift{display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 8px;border-radius:6px;
  font-size:12px;font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}
.shift.work{background:hsl(var(--blue)/.12);color:hsl(var(--blue))}
.shift.off{background:hsl(var(--muted));color:hsl(var(--muted-foreground))}
.shift.vac{background:hsl(var(--amber)/.16);color:hsl(var(--amber))}
.shift.sick{background:hsl(var(--rose)/.14);color:hsl(var(--rose))}
.shift.empty{background:transparent;border:1px dashed hsl(var(--border));color:hsl(var(--muted-foreground));font-weight:500}

/* avatar */
.avatar{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;font-weight:700;font-size:12px;flex:none;
  background:hsl(var(--secondary));color:hsl(var(--secondary-foreground))}

/* inputs */
.input,.select{height:36px;padding:0 11px;border:1px solid hsl(var(--input));border-radius:calc(var(--radius) - 2px);
  background:hsl(var(--background));color:hsl(var(--foreground));font-size:13.5px;font-family:inherit;outline:none;transition:.13s}
.input:focus,.select:focus{border-color:hsl(var(--ring));box-shadow:0 0 0 3px hsl(var(--ring)/.12)}
.field-label{font-size:12.5px;font-weight:500;margin-bottom:6px;display:block}

/* progress */
.progress{height:8px;border-radius:999px;background:hsl(var(--muted));overflow:hidden}
.progress>span{display:block;height:100%;border-radius:999px;background:hsl(var(--primary))}

/* misc */
.empty{padding:44px 20px;text-align:center;color:hsl(var(--muted-foreground));font-size:13.5px}
.empty .ic{font-size:26px;opacity:.5;display:block;margin:0 auto 10px}
.demo-note{margin-top:32px;display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:var(--radius);
  border:1px dashed hsl(var(--border));background:hsl(var(--muted)/.5);color:hsl(var(--muted-foreground));font-size:13px}
.demo-note .ic{font-size:18px;color:hsl(var(--amber));flex:none;margin-top:1px}
.gate{min-height:70vh;display:grid;place-items:center;text-align:center;padding:24px}
.gate h2{font-size:20px;font-weight:700;margin:0 0 8px}.gate p{color:hsl(var(--muted-foreground));margin:0 0 18px}

@media(max-width:900px){.stats{grid-template-columns:repeat(2,1fr)}.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.stats,.grid-cards{grid-template-columns:1fr}.brand span{display:none}}