:root{
  --sidebar-bg: #EAF4FC;
  --sidebar-active: #CFE9FB;
  --sidebar-border: #D3E8F7;
  --accent: #2E9BE6;
  --text-dark: #1F2937;
  --text-light: #6B7280;
  --bg-main: #F7FAFD;
  --card-bg: #FFFFFF;
  --shadow: 0 2px 8px rgba(46,155,230,0.08);
}
*{box-sizing:border-box; margin:0; padding:0;}
body{
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-dark);
  display:flex;
  min-height:100vh;
}

/* Sidebar */
.sidebar{
  width:250px;
  background: var(--sidebar-bg);
  border-right:1px solid var(--sidebar-border);
  padding: 24px 16px;
  display:flex;
  flex-direction:column;
  gap: 6px;
}
.sidebar .logo{
  font-size:20px;
  font-weight:700;
  color: var(--accent);
  margin-bottom: 28px;
  padding-left: 8px;
}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:10px;
  color: var(--text-dark);
  text-decoration:none;
  font-size:14.5px;
  font-weight:500;
  cursor:pointer;
  transition: background .15s ease;
}
.nav-item:hover{ background: #DDF0FB; }
.nav-item.active{
  background: var(--sidebar-active);
  color: var(--accent);
  font-weight:600;
}
.nav-icon{
  width:18px; height:18px; flex-shrink:0;
}
.nav-section-label{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.05em;
  color: var(--text-light);
  margin: 18px 0 6px 14px;
}
.sidebar-footer{
  margin-top:auto;
  padding:14px;
  border-top:1px solid var(--sidebar-border);
  display:flex;
  align-items:center;
  gap:10px;
}
.avatar{
  width:34px;height:34px;border-radius:50%;
  background: var(--accent); color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px; font-weight:600;
}
.user-meta .name{font-size:13.5px;font-weight:600;}
.user-meta .role{font-size:11.5px;color:var(--text-light);}

/* Main */
.main{ flex:1; display:flex; flex-direction:column; }
.topbar{
  height:64px;
  background: var(--card-bg);
  border-bottom:1px solid #E7EEF5;
  display:flex; align-items:center; justify-content:space-between;
  padding: 0 28px;
}
.topbar h1{ font-size:18px; font-weight:600; }
.search-box{
  background:#F1F7FC; border:1px solid #E1EEF8; border-radius:8px;
  padding:8px 14px; font-size:13.5px; color:var(--text-light); width:240px;
}
.content{ padding:28px; flex:1; }

/* Stats Grid */
.stats-grid{
  display:grid; grid-template-columns: repeat(4,1fr); gap:18px; margin-bottom:26px;
}
.stat-card{
  background:var(--card-bg); border-radius:14px; padding:20px;
  box-shadow: var(--shadow); border:1px solid #EAF1F8;
}
.stat-card .label{ font-size:12.5px; color:var(--text-light); margin-bottom:8px; }
.stat-card .value{ font-size:24px; font-weight:700; }
.stat-card .delta{ font-size:12px; color:#16A34A; margin-top:6px; }

/* Panel */
.panel{
  background: var(--card-bg); border-radius:14px; padding:22px;
  box-shadow: var(--shadow); border:1px solid #EAF1F8;
}
table{ width:100%; border-collapse:collapse; font-size:13.5px; }
th{ text-align:left; color:var(--text-light); font-weight:600; padding:10px 12px; border-bottom:1px solid #EEF3F8; }
td{ padding:12px 12px; border-bottom:1px solid #F3F7FA; }
.badge{ padding:4px 10px; border-radius:20px; font-size:11.5px; font-weight:600; }
.badge.active{ background:#E3F8EC; color:#16A34A; }
.badge.pending{ background:#FFF4E0; color:#D97706; }

/* Form Styles */
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}

.form-group{
  display:flex;
  flex-direction:column;
}

.form-group label{
  font-size:13px;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea{
  border:1px solid #DCEAF6;
  background:#F9FCFF;
  border-radius:10px;
  padding:12px 14px;
  font-size:14px;
  outline:none;
}

.form-group textarea{
  height:120px;
  resize:none;
}

.full-width{
  grid-column:1/-1;
}

/* Buttons */
.btn-primary{
  background:#2E9BE6;
  color:#fff;
  border:none;
  padding:12px 24px;
  border-radius:10px;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  text-decoration:none;
  display:inline-block;
}

.btn-primary:hover{
  opacity:.9;
}

.btn-upload{
  margin-top:20px;
  background:var(--accent);
  color:#fff;
  border:none;
  padding:12px 24px;
  border-radius:10px;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
}

.action-btn{
  background:#E8F4FD;
  color:var(--accent);
  border:none;
  padding:7px 12px;
  border-radius:8px;
  cursor:pointer;
}

.edit-btn{
  background:#EAF4FC;
  color:#2E9BE6;
  border:none;
  padding:8px 14px;
  border-radius:8px;
  cursor:pointer;
}

.delete-btn{
  background:#FEE2E2;
  color:#DC2626;
  border:none;
  padding:7px 12px;
  border-radius:8px;
  cursor:pointer;
  margin-left:5px;
}

.view-btn{
  background:#EAF4FC;
  color:#2E9BE6;
  border:none;
  padding:8px 12px;
  border-radius:8px;
  cursor:pointer;
}

/* Upload Box */
.upload-box{
  border:2px dashed #B8DBF6;
  background:#F6FBFF;
  border-radius:14px;
  padding:40px;
  text-align:center;
  position:relative;
}

.upload-box input[type=file]{
  width:100%;
  cursor:pointer;
}

.upload-box p{
  margin-top:12px;
  font-size:14px;
  font-weight:600;
}

.upload-box small{
  color:var(--text-light);
}

/* Filter Header */
.filter-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:20px;
}

.filter-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}

/* Pagination */
.pagination{
  display:flex;
  justify-content:flex-end;
  gap:8px;
  margin-top:20px;
}

.pagination button{
  border:none;
  background:#F1F7FC;
  padding:10px 15px;
  border-radius:8px;
  cursor:pointer;
}

.active-page{
  background:#2E9BE6 !important;
  color:white;
}

/* Login Page */
.login-card{
  background: var(--card-bg);
  border-radius:14px;
  padding:40px;
  box-shadow: var(--shadow);
  border:1px solid #EAF1F8;
  width:100%;
  max-width:400px;
}

.login-header{
  text-align:center;
  margin-bottom:30px;
}

.login-header h1{
  font-size:24px;
  font-weight:700;
  color: var(--accent);
  margin-bottom:8px;
}

.login-header p{
  font-size:14px;
  color: var(--text-light);
}

.btn-login{
  width:100%;
  background: var(--accent);
  color:#fff;
  border:none;
  padding:12px;
  border-radius:10px;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  margin-top:10px;
}

.btn-login:hover{
  opacity:.9;
}

.error-message{
  background:#FEE2E2;
  color:#DC2626;
  padding:10px 14px;
  border-radius:8px;
  font-size:13px;
  margin-bottom:20px;
}

/* Responsive */
@media(max-width:992px){
  .filter-grid{
    grid-template-columns:repeat(2,1fr);
  }
}

@media(max-width:768px){
  .form-grid{
    grid-template-columns:1fr;
  }
  .filter-grid{
    grid-template-columns:1fr;
  }
  .filter-header{
    flex-direction:column;
    gap:15px;
    align-items:flex-start;
  }
  table{
    display:block;
    overflow-x:auto;
  }
}