:root{
  --primary:#1E90FF;
  --secondary:#FF6F61;
  --bg:#F9FAFB;
  --text:#1F2937;
  --muted:#6B7280;
  --card:#ffffff;
  --shadow:0 2px 8px rgba(0,0,0,.03);
  --shadow-lg:0 8px 24px rgba(0,0,0,.08);
}

*{box-sizing:border-box}

html,body{
  margin:0;
  padding:0;
  font-family:'Roboto',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

h1,h2,h3,h4,h5{
  font-family:'Poppins',sans-serif;
  margin:0 0 12px;
  line-height:1.2;
}

h1{font-size:clamp(1.8rem, 4vw, 2.5rem)}
h2{font-size:clamp(1.5rem, 3vw, 2rem)}
h3{font-size:clamp(1.2rem, 2.5vw, 1.5rem)}

a{text-decoration:none;color:var(--primary)}

/* Container - Mobile First */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:15px;
  width:100%;
}

/* Navigation - Responsive */
.navbar{
  background:#fff;
  border-bottom:1px solid #e5e7eb;
  position:sticky;
  top:0;
  z-index:100;
  box-shadow:var(--shadow);
}

.navbar .inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 15px;
  flex-wrap:wrap;
  gap:10px;
}

.brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-weight:700;
  color:var(--primary);
  flex-shrink:0;
}

.brand .logo{
  width:auto;
  height:28px;
  max-width:120px;
  object-fit:contain;
}

/* Mobile Navigation */
.navlinks{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  align-items:center;
  font-size:14px;
}

.navlinks a{
  padding:6px 10px;
  border-radius:6px;
  white-space:nowrap;
  transition:background-color 0.2s;
}

.navlinks a:hover{
  background:rgba(30,144,255,0.1);
}
/* Buttons - Mobile First */
.btn{
  display:inline-block;
  background:var(--primary);
  color:#fff;
  padding:12px 20px;
  border-radius:10px;
  border:none;
  cursor:pointer;
  transition:all .2s ease;
  font-weight:600;
  text-align:center;
  text-decoration:none;
  font-size:14px;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-sizing:border-box;
}

.btn:hover{
  transform:translateY(-1px);
  box-shadow:0 6px 18px rgba(30,144,255,.2);
}

.btn:active{
  transform:translateY(0);
}

.btn.secondary{
  background:var(--secondary);
}

.btn.secondary:hover{
  box-shadow:0 6px 18px rgba(255,111,97,.2);
}

/* Cards - Mobile First */
.card{
  background:var(--card);
  border:1px solid #e5e7eb;
  border-radius:12px;
  padding:15px;
  box-shadow:var(--shadow);
  width:100%;
  box-sizing:border-box;
}

/* Responsive Grid System */
.grid{
  display:grid;
  gap:15px;
  width:100%;
}

.grid.cols-1{grid-template-columns:1fr}
.grid.cols-2{grid-template-columns:1fr}
.grid.cols-3{grid-template-columns:1fr}

/* Forms - Mobile First */
.input,.input-group input,.input-group select,.input-group textarea{
  width:100%;
  padding:12px 15px;
  border:1px solid #d1d5db;
  border-radius:10px;
  font-size:16px;
  background:#fff;
  transition:border-color 0.2s;
  box-sizing:border-box;
  min-height:44px;
}

.input:focus,.input-group input:focus,.input-group select:focus,.input-group textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(30,144,255,0.1);
}

textarea.input{
  resize:vertical;
  min-height:100px;
}
.label{
  font-weight:600;
  margin-bottom:8px;
  display:block;
  font-size:14px;
}

.form-row{
  margin-bottom:20px;
}

/* Tables - Mobile Responsive */
.table{
  width:100%;
  border-collapse:collapse;
  background:#fff;
  border-radius:8px;
  overflow:hidden;
  box-shadow:var(--shadow);
}

.table th,.table td{
  padding:12px 8px;
  text-align:left;
  border-bottom:1px solid #e5e7eb;
  font-size:14px;
}

.table th{
  background:#f8fafc;
  font-weight:600;
  color:#374151;
}

/* Utilities */
.kpi{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
}

.badge{
  display:inline-block;
  background:#EFF6FF;
  color:#1E40AF;
  border:1px solid #BFDBFE;
  border-radius:999px;
  padding:4px 8px;
  font-size:12px;
  font-weight:500;
}

.footer{
  color:var(--muted);
  font-size:14px;
  padding:20px;
  text-align:center;
  margin-top:40px;
}

.toolbar{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:20px;
  align-items:center;
}

/* Alerts */
.alert{
  padding:15px;
  border-radius:10px;
  margin-bottom:20px;
  font-weight:500;
}

.alert.error{
  background:#FEF2F2;
  color:#991B1B;
  border:1px solid #FECACA;
}

.alert.success{
  background:#ECFDF5;
  color:#065F46;
  border:1px solid #A7F3D0;
}

/* Chat - Mobile Responsive */
.chat-box{
  height:300px;
  overflow-y:auto;
  border:1px solid #e5e7eb;
  border-radius:10px;
  padding:10px;
  background:#fff;
  font-size:14px;
}

.chat-input{
  display:flex;
  gap:8px;
  margin-top:10px;
}

.chat-input .input{
  flex:1;
}

/* Notifications */
.notif-bell{
  position:relative;
  background:transparent;
  border:none;
  cursor:pointer;
  font-size:18px;
  min-height:44px;
  padding:8px;
}

.notif-badge{
  position:absolute;
  top:2px;
  right:2px;
  background:#FF6F61;
  color:#fff;
  border-radius:999px;
  padding:2px 6px;
  font-size:10px;
  min-width:16px;
  text-align:center;
}

.notif-panel{
  position:absolute;
  right:10px;
  top:56px;
  width:min(320px, calc(100vw - 20px));
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:12px;
  box-shadow:var(--shadow-lg);
  display:none;
  z-index:1000;
  max-height:400px;
  overflow-y:auto;
}

.notif-panel .item{
  padding:12px;
  border-bottom:1px solid #f3f4f6;
  font-size:14px;
}

.notif-panel .item:last-child{
  border-bottom:none;
}

/* Responsive Media Queries */
@media (min-width: 480px) {
  .container{
    padding:20px;
  }
  
  .navbar .inner{
    padding:12px 20px;
  }
  
  .brand .logo{
    height:32px;
    max-width:150px;
  }
  
  .card{
    padding:20px;
  }
  
  .grid.cols-2{
    grid-template-columns:1fr 1fr;
  }
  
  .chat-box{
    height:320px;
  }
  
  .notif-panel{
    right:20px;
  }
}

@media (min-width: 768px) {
  .container{
    padding:30px;
  }
  
  .grid.cols-3{
    grid-template-columns:repeat(2, 1fr);
  }
  
  .table th,.table td{
    padding:12px;
  }
  
  .btn{
    padding:12px 24px;
  }
}

@media (min-width: 1024px) {
  .grid.cols-3{
    grid-template-columns:repeat(3, 1fr);
  }
  
  .navlinks{
    font-size:16px;
    gap:14px;
  }
  
  .navlinks a{
    padding:8px 12px;
  }
}

@media (min-width: 1200px) {
  .grid{
    gap:20px;
  }
  
  .card{
    padding:24px;
  }
}