:root{
  /* Light theme */
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --panel:#ffffff;
  --card:#ffffff;
  --muted:#64748b;
  --text:#0f172a;
  --primary:#2563eb;         /* blue-600 */
  --primary-600:#1d4ed8;     /* blue-700 */
  --secondary:#14b8a6;       /* teal-500 */
  --danger:#ef4444;          /* red-500 */
  --warning:#f59e0b;         /* amber-500 */
  --border:#e2e8f0;
  --shadow:0 8px 20px rgba(2,6,23,.08);
  --radius:12px;
}

*{box-sizing:border-box}
html,body{
  margin:0;padding:0;
  background:linear-gradient(180deg,#ffffff,#f8fafc 50%,#ffffff);
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  scroll-behavior:smooth
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{cursor:pointer}
.container{width:min(1200px,92%);margin:0 auto}
.hidden{display:none!important}

/* Navbar */
.navbar{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px) saturate(120%);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow)
}
.navbar .row{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.brand{display:flex;gap:10px;align-items:center;font-weight:800}
.brand .logo{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,#60a5fa,var(--primary))}
.nav-links{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.nav-links a,.btn{
  padding:10px 14px;border-radius:10px;color:var(--text);
  border:1px solid var(--border);background:#fff
}
.nav-links a:hover,.btn:hover{border-color:#cbd5e1;transform:translateY(-1px);transition:.2s}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#60a5fa);
  color:#fff;border:none
}
.btn-ghost{background:transparent;border-color:transparent}

/* Footer */
footer{
  margin-top:60px;border-top:1px solid var(--border);
  background:var(--bg-soft)
}
footer .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:30px 0}
footer small{display:block;color:var(--muted);padding:16px 0;border-top:1px solid var(--border);text-align:center}
@media (max-width:900px){footer .grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){footer .grid{grid-template-columns:1fr}}

/* Hero and sections */
.hero{padding:70px 0 30px;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.hero .panel,.panel{
  background:#ffffff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)
}
.panel{padding:20px}
h1,h2,h3{margin:0 0 10px}
.muted{color:var(--muted)}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:960px){.hero{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}

/* Cards */
.card{
  background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)
}
.card:hover{transform:translateY(-2px);transition:.2s}
.card .body{padding:14px}

/* Forms */
.form{display:grid;gap:10px}
.input{display:flex;flex-direction:column;gap:6px}
.input input,.input select,.input textarea{
  background:#fff;border:1px solid var(--border);border-radius:10px;color:var(--text);
  padding:10px 12px;outline:none
}
.input input:focus,.input select:focus,.input textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(37,99,235,.12)
}
.inline{display:flex;gap:10px;flex-wrap:wrap}

/* Stepper */
.stepper{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.progress{height:6px;background:#e5e7eb;border-radius:20px;overflow:hidden}
.progress > i{display:block;height:100%;width:0;background:linear-gradient(90deg,#60a5fa,var(--primary));transition:width .3s}

/* Modals */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.35);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:18px;z-index:100}
.modal.open{display:flex}
.modal .content{
  width:min(720px,96%);background:#fff;border:1px solid var(--border);
  border-radius:16px;box-shadow:var(--shadow);max-height:90vh;overflow:auto
}
.modal .head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--border)}
.modal .body{padding:14px 16px}

/* Tables */
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--border);text-align:left;color:var(--text)}
.table th{color:#334155;background:#f1f5f9}

/* Sidebar (Admin/Filters) */
.sidebar{
  position:sticky;top:70px;background:#fff;border:1px solid var(--border);
  border-radius:12px;padding:14px;height:fit-content;box-shadow:var(--shadow)
}

/* Chips and badges */
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  padding:6px 10px;border-radius:999px;background:#f1f5f9;border:1px solid var(--border);font-size:.85rem;color:#0f172a
}
.badge{
  padding:4px 8px;border-radius:8px;background:linear-gradient(135deg,#86efac,#22c55e);
  color:#064e3b;border:1px solid #86efac
}

/* Avatars */
.avatars{display:flex}
.avatar{width:42px;height:42px;border-radius:50%;border:2px solid #e2e8f0;overflow:hidden;margin-right:-10px}

/* Chat floating widget */
.chat-fab{position:fixed;right:18px;bottom:18px;background:linear-gradient(135deg,#60a5fa,var(--primary));color:white;border:none;width:54px;height:54px;border-radius:50%;box-shadow:var(--shadow);z-index:60}
.chat{
  position:fixed;right:18px;bottom:84px;width:320px;max-height:420px;display:none;flex-direction:column;
  background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;z-index:60
}
.chat.open{display:flex}
.chat .head{padding:10px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.chat .messages{padding:12px;display:flex;flex-direction:column;gap:8px;overflow:auto;background:#fbfdff}
.chat .msg{max-width:80%;padding:8px 10px;border-radius:10px;background:#f1f5f9}
.chat .msg.me{align-self:flex-end;background:rgba(37,99,235,.12)}
.chat .inputbar{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}
.chat .inputbar input{flex:1}

/* Carousel dots */
.dots{display:flex;gap:8px;justify-content:center;margin-top:8px}
.dot{width:8px;height:8px;border-radius:999px;background:#cbd5e1}
.dot.active{background:linear-gradient(135deg,#60a5fa,var(--primary))}

/* Utility spacing */
.mt-1{margin-top:6px}.mt-2{margin-top:12px}.mt-3{margin-top:18px}.mt-4{margin-top:24px}