:root{
  --bg:#f8fafc;
  --panel:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;

  --primary:#2563eb;
  --primary-700:#1d4ed8;
  --primary-50:#eff6ff;

  --good:#16a34a;
  --good-bg:#dcfce7;

  --stable:#2563eb;
  --stable-bg:#dbeafe;

  --warn:#ea580c;
  --warn-bg:#ffedd5;

  --shadow: 0 8px 20px rgba(17,24,39,.06);
  --radius:14px;
}

[data-theme="dark"]{
  --bg:#0b1220;
  --panel:#0f172a;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --border:#23314a;

  --primary:#60a5fa;
  --primary-700:#3b82f6;
  --primary-50:#0b2347;

  --good:#22c55e;
  --good-bg:#052a18;

  --stable:#60a5fa;
  --stable-bg:#0b2347;

  --warn:#fb923c;
  --warn-bg:#2a1605;

  --shadow: 0 10px 22px rgba(0,0,0,.25);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Layout */
.header{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--panel);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1280px;
  margin:0 auto;
  padding:18px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-700));
  display:grid;
  place-items:center;
  color:white;
  font-weight:800;
}
.brand-title{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.brand-title b{ font-size:18px; }
.brand-title span{ font-size:13px; color:var(--muted); }

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
.icon-btn{
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
  padding:10px 12px;
  border-radius:12px;
  cursor:pointer;
  box-shadow:none;
}
.icon-btn:hover{ border-color:rgba(37,99,235,.35); }
.pill{
  border:1px solid var(--border);
  background:var(--panel);
  padding:10px 12px;
  border-radius:999px;
  color:var(--muted);
  font-size:13px;
}

.shell{
  max-width:1280px;
  margin:0 auto;
  padding:18px;
  display:grid;
  grid-template-columns: 240px 1fr;
  gap:18px;
}

/* Sidebar */
.sidebar{
  position:sticky;
  top:86px;
  align-self:start;
  height: calc(100vh - 104px);
  padding:14px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  gap:10px;
}
.nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 12px;
  border-radius:12px;
  text-decoration:none;
  color:var(--text);
  border:1px solid transparent;
}
.nav a small{ color:var(--muted); }
.nav a:hover{
  background:var(--primary-50);
  border-color: rgba(37,99,235,.25);
}
.nav a.active{
  background:linear-gradient(135deg,var(--primary),var(--primary-700));
  color:#fff;
}
.nav a.active small{ color:rgba(255,255,255,.85); }
.sidebar-footer{
  margin-top:auto;
  border-top:1px solid var(--border);
  padding-top:12px;
  display:grid;
  gap:10px;
}
.userbox{
  display:flex;
  gap:10px;
  align-items:center;
}
.avatar{
  width:42px;height:42px;
  border-radius:999px;
  background:var(--primary-50);
  display:grid;
  place-items:center;
  color:var(--primary);
  font-weight:700;
  border:1px solid var(--border);
}

/* Main content */
.main{
  display:grid;
  gap:18px;
}

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}

.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
}
.card h3{ margin:0 0 8px 0; font-size:14px; color:var(--muted); font-weight:600; }
.card .big{
  font-size:26px;
  font-weight:800;
  margin:0;
}

.status{
  display:flex;
  align-items:center;
  gap:12px;
}
.status .dot{
  width:40px;height:40px;border-radius:14px;
  display:grid;place-items:center;
  border:1px solid var(--border);
}
.dot.good{ background:var(--good-bg); color:var(--good); }
.dot.stable{ background:var(--stable-bg); color:var(--stable); }
.dot.warn{ background:var(--warn-bg); color:var(--warn); }

.searchbar{
  display:flex;
  gap:10px;
  align-items:center;
  padding:12px 12px;
  border:1px solid var(--border);
  background:var(--panel);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.searchbar input{
  width:100%;
  border:0;
  outline:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
}
.searchbar .chip{
  border:1px solid var(--border);
  background:var(--panel);
  border-radius:999px;
  padding:8px 10px;
  font-size:12px;
  color:var(--muted);
  cursor:pointer;
}
.searchbar .chip.active{
  background:var(--primary-50);
  color:var(--primary);
  border-color: rgba(37,99,235,.35);
}

/* Patients grid */
.section-title{
  margin:0;
  font-size:16px;
  font-weight:800;
}
.patients-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
.patient-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
  display:grid;
  gap:12px;
  cursor:pointer;
  transition: transform .08s ease;
}
.patient-card:hover{ transform: translateY(-2px); }
.patient-top{
  display:flex;
  gap:12px;
  align-items:flex-start;
  position:relative;
}
.patient-id{
  color:var(--muted);
  font-size:12px;
  margin-top:2px;
}
.badge{
  position:absolute;
  right:0; top:0;
  border-radius:999px;
  padding:4px 10px;
  font-size:12px;
  border:1px solid var(--border);
  text-transform: lowercase;
}
.badge.good{ background:var(--good-bg); color:var(--good); }
.badge.stable{ background:var(--stable-bg); color:var(--stable); }
.badge.warn{ background:var(--warn-bg); color:var(--warn); }

.kv{
  list-style:none;
  padding:0;margin:0;
  display:grid;
  gap:6px;
  font-size:13px;
  color:var(--text);
}
.kv span{ color:var(--muted); }

.divider{
  height:1px;
  background:var(--border);
}
.diagnosis{
  font-size:13px;
  color:var(--muted);
}

/* Two-column dashboard sections */
.grid-2{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:14px;
}

/* Tables */
.table{
  width:100%;
  border-collapse:collapse;
  overflow:hidden;
  border-radius:12px;
  border:1px solid var(--border);
}
.table th{
  text-align:left;
  font-size:12px;
  color:var(--muted);
  font-weight:700;
  background:rgba(37,99,235,.06);
  padding:10px;
  border-bottom:1px solid var(--border);
}
.table td{
  padding:10px;
  border-bottom:1px solid var(--border);
  font-size:13px;
}
.table tr:last-child td{ border-bottom:none; }
.table a{
  color:var(--primary);
  text-decoration:none;
  font-weight:700;
}

/* Buttons */
.btn{
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  cursor:pointer;
}
.btn.primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-700));
  color:#fff;
  border-color:transparent;
}
.btn:hover{ border-color: rgba(37,99,235,.35); }
.btn.primary:hover{ filter:brightness(1.02); }

/* Messages */
.msg-layout{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap:14px;
}
.thread{
  display:flex;
  flex-direction:column;
  gap:10px;
  max-height:520px;
  overflow:auto;
  padding-right:6px;
}
.thread .bubble{
  max-width: 70%;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
}
.thread .bubble.me{
  margin-left:auto;
  background:var(--primary-50);
  border-color: rgba(37,99,235,.35);
}
.thread .meta{
  font-size:11px;
  color:var(--muted);
  margin-top:4px;
}
.chat-input{
  display:flex;
  gap:10px;
  margin-top:12px;
}
.chat-input input{
  flex:1;
  padding:12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
}

/* Mobile bottom nav */
.mobile-nav{
  display:none;
  position:fixed;
  bottom:0;
  left:0; right:0;
  z-index:60;
  background:var(--panel);
  border-top:1px solid var(--border);
  padding:10px 10px;
}
.mobile-nav .tabs{
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap:8px;
}
.mobile-nav a{
  text-decoration:none;
  color:var(--muted);
  font-size:12px;
  display:grid;
  place-items:center;
  padding:8px 6px;
  border-radius:12px;
  border:1px solid transparent;
}
.mobile-nav a.active{
  color:var(--primary);
  background:var(--primary-50);
  border-color: rgba(37,99,235,.25);
}

/* Responsive */
@media (max-width: 1100px){
  .patients-grid{ grid-template-columns: repeat(2, 1fr); }
  .grid-3{ grid-template-columns: repeat(2, 1fr); }
  .grid-2{ grid-template-columns: 1fr; }
  .msg-layout{ grid-template-columns: 1fr; }
}

@media (max-width: 820px){
  .shell{
    grid-template-columns: 1fr;
  }
  .sidebar{
    display:none;
  }
  .mobile-nav{
    display:block;
  }
  .main{ padding-bottom:86px; }
  .patients-grid{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
}