:root {
  --primary-blue: #0A42D0;
  --primary-light: #F0F4FF;
  --secondary-blue: #1A56DB;
  --text-dark: #1F2937;
  --text-medium: #4B5563;
  --text-light: #9CA3AF;
  --bg-gray: #F9FAFB;
  --border-color: #E5E7EB;
  --sidebar-width: 260px;
}

body {
  background-color: var(--bg-gray);
  color: var(--text-dark);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  background: white;
  border-right: 1px solid var(--border-color);
  z-index: 1000;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
}

.brand-logo {
  color: var(--primary-blue);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
  text-decoration: none;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  color: var(--text-medium);
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  font-weight: 500;
}

.nav-link:hover {
  background-color: var(--bg-gray);
  color: var(--primary-blue);
}

.nav-link.active {
  background-color: var(--primary-light);
  color: var(--primary-blue);
}

.nav-link i {
  width: 20px;
  text-align: center;
}

/* Main Content Area */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: 2rem;
}

/* Cards */
.stat-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon.blue {
  background-color: var(--primary-light);
  color: var(--primary-blue);
}

.stat-icon.green {
  background-color: #ECFDF5;
  color: #10B981;
}

.stat-icon.purple {
  background-color: #F5F3FF;
  color: #8B5CF6;
}

.stat-icon.orange {
  background-color: #FFF7ED;
  color: #F97316;
}

.stat-info h3 {
  font-size: 0.875rem;
  color: var(--text-medium);
  margin: 0 0 0.25rem 0;
  font-weight: 500;
}

.stat-info p {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
}

/* Custom Tables */
.table-card {
  background: white;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.table-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.table > :not(caption) > * > * {
  padding: 1rem 1.5rem;
  border-bottom-color: var(--border-color);
}

.table th {
  font-weight: 600;
  color: var(--text-medium);
  font-size: 0.875rem;
  background-color: var(--bg-gray);
  border-bottom: none;
}

/* Login Page specific */
.login-body {
  background-color: var(--bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: white;
  border-radius: 1.5rem;
  box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
  padding: 3rem;
  width: 100%;
  max-width: 440px;
  border: 1px solid var(--border-color);
}

.btn-primary {
  background-color: var(--primary-blue);
  border-color: var(--primary-blue);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  border-radius: 0.5rem;
}

.btn-primary:hover {
  background-color: var(--secondary-blue);
  border-color: var(--secondary-blue);
}

.form-control {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border-color: var(--border-color);
}

.form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 0.25rem rgba(10, 66, 208, 0.1);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    width: 280px; /* slightly wider for touch */
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: 1rem;
  }
  
  .topbar {
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
  }
  
  .stat-card {
    padding: 1.25rem;
  }
  
  .table-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .table-header > .d-flex {
    width: 100%;
    flex-direction: column;
  }
  
  .table-header .input-group {
    width: 100% !important;
  }
  
  .table-header .btn {
    width: 100%;
  }

  /* Increase tap targets for touch */
  .nav-link {
    padding: 1rem 1.25rem;
    font-size: 1.05rem;
  }
  
  .btn, .form-control, .form-select {
    min-height: 48px; /* Touch friendly height */
  }
  
  .login-card {
    padding: 2rem 1.5rem;
    border-radius: 1rem;
  }
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.show {
  display: block;
}