:root{
        --primary: #6f42c1;
        --primary-dark: #5a32a3;
        --muted-bg: #f6f5fb;
        --card-shadow: 0 6px 24px rgba(31,45,61,0.10);
        --white-color: #ffffff;
        --heading-text: #343434;
      }
      body { padding-top: 76px; background: var(--muted-bg); }
      .container {
        max-width: 96%;
        width: 100%;
        padding-right: 1rem;
        padding-left: 1rem;
        margin-right: auto;
        margin-left: auto;
      }
      @media (min-width: 576px) {
        .container { max-width: 540px; }
      }
      @media (min-width: 768px) {
        .container { max-width: 720px; }
      }
      @media (min-width: 992px) {
        .container { max-width: 96%; }
      }
      @media (min-width: 1100px) {
        .container { max-width: 96%; }
      }
      a { color: var(--primary); transition: color 0.2s; }
      a:hover { color: var(--primary-dark); text-decoration: none; }
      .btn, .form-control:not(.input-group .form-control), .card, .dropdown-menu {
        border-radius: 12px !important;
      }
      .input-group > .form-control { border-radius: 0 !important; }
      .input-group > .input-group-prepend > .input-group-text { border-radius: 12px 0 0 12px !important; }
      .input-group > .input-group-append > .input-group-text,
      .input-group > .input-group-append > .btn { border-radius: 0 12px 12px 0 !important; }
      .input-group-merge .input-group-prepend .input-group-text {
        border-right: 0;
      }
      .input-group-merge .form-control {
        border-left: 0;
      }
      .input-group-merge .form-control:focus {
        border-color: var(--primary-dark);
      }
      .input-group-merge .form-control:focus + .input-group-append .input-group-text {
        border-color: var(--primary-dark);
      }
      .btn-outline-secondary {
        color: var(--primary);
        border-color: var(--primary);
        transition: background 0.2s, color 0.2s;
      }
      .btn-outline-secondary:hover {
        background-color: var(--primary);
        color: #fff;
        border-color: var(--primary);
      }
      .btn-primary, .bg-primary {
        background: linear-gradient(90deg, var(--primary), var(--primary-dark));
        border: none;
        color: #fff !important;
        box-shadow: 0 2px 8px rgba(111,66,193,0.10);
      }
      h1, h2, h3, h4, h5, h6 { color: var(--heading-text); font-weight: 600; }
      .text-primary { color: var(--primary) !important; }
      #hero h3, #hero h2, #hero h1 { color: var(--white-color); }
      .social-icons img{ width:28px; }
      .profile-avatar { width:110px; height:110px; border-radius:50%; background:var(--primary-dark); color:#fff; display:flex; align-items:center; justify-content:center; font-size:40px; box-shadow: 0 2px 8px rgba(90,50,163,0.10); }
      .link-card .card-body { padding: .95rem; }
      .app-card { border-radius:16px; box-shadow: var(--card-shadow); }
      .btn-app { border-radius:10px; }
      .form-control:focus { box-shadow: 0 0 0 2px var(--primary-dark, #5a32a3)33; border-color: var(--primary-dark); }
      /* Admin sidebar styles */
      .admin-sidebar { background: linear-gradient(180deg,var(--primary),var(--primary-dark)); min-height: calc(100vh - 76px); padding-top: 1rem; color:#fff; border-radius: 0 18px 18px 0; box-shadow: 2px 0 12px rgba(111,66,193,0.07); }
      .admin-sidebar .nav-link { color: rgba(255,255,255,0.95); transition: background 0.2s; }
      .admin-sidebar .nav-link.active, .admin-sidebar .nav-link:hover { background: rgba(255,255,255,0.13); border-radius:8px; }
      .admin-brand { font-weight:700; letter-spacing: .4px; font-size: 1.2rem; }
      .main-area { padding: 1.75rem 1.5rem; }
      /* Responsive Styles */
      @media (max-width: 576px) {
        body { padding-top: 72px; }
        .main-area { padding: 1rem; }
        .container { padding-left: 16px; padding-right: 16px; }
        .card { margin-left: -8px; margin-right: -8px; border-radius: 0 !important; }
        .btn { padding: .5rem 1rem; }
        .navbar-brand { font-size: 1.1rem; }
        h1, .h1 { font-size: 1.8rem; }
        h2, .h2 { font-size: 1.5rem; }
        h3, .h3 { font-size: 1.3rem; }
        .input-group-lg > .form-control { font-size: 0.95rem; }
        .profile-avatar { width: 90px; height: 90px; font-size: 32px; }
      }
      
      @media (max-width: 768px) {
        .table-responsive { margin: 0 -16px; width: calc(100% + 32px); }
        .table td, .table th { padding: .5rem; }
        .navbar-collapse { background: var(--primary-dark); margin: 0 -1rem; padding: 1rem; border-radius: 0 0 16px 16px; }
        .admin-sidebar { border-radius: 16px; margin-bottom: 1rem; }
      }
      
      @media (max-width: 992px) {
        .container { max-width: 100%; }
        .card-body { padding: 1.25rem; }

      }
      
      /* Navigation */
      .navbar, .navbar-dark .navbar-nav .nav-link.text-white { 
        color: #fff !important; 
      }
      .navbar-toggler {
        padding: .5rem;
        border: none;
        border-radius: 8px;
      }
      .navbar-toggler:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(255,255,255,.25);
      }
      
      /* Card and Badge Styles */
      .badge-primary { background-color: var(--primary-dark); }
      .card { 
        border: none; 
        box-shadow: var(--card-shadow);
        transition: all 0.2s ease-in-out;
      }
      .shadow-sm { box-shadow: 0 2px 8px rgba(31,45,61,0.08) !important; }
      .shadow { box-shadow: 0 6px 24px rgba(31,45,61,0.13) !important; }
      .table { border-radius: 12px; overflow: hidden;white-space: nowrap; }
      
      /* Enhanced Grid System */
      @media (max-width: 576px) {
        .row {
          margin-left: -8px;
          margin-right: -8px;
        }
        .col, [class*="col-"] {
          padding-left: 8px;
          padding-right: 8px;
        }
        .container {
          padding-left: 12px;
          padding-right: 12px;
        }
      }
      
      /* Improved Spacing */
      @media (max-width: 576px) {
        .mb-4 { margin-bottom: 1rem !important; }
        .mt-4 { margin-top: 1rem !important; }
        .py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
        .px-4 { padding-left: 1rem !important; padding-right: 1rem !important; }
      }
      
      /* Table Responsiveness */
      .table-responsive {
        border-radius: 12px;
      }
      @media (max-width: 768px) {
        .table th, .table td {
          white-space: nowrap;
          min-width: 100px;
        }
        .table th:first-child, .table td:first-child {
          position: sticky;
          left: 0;
          z-index: 1;
        }
      }
      /* Enhanced form styles */
      .input-group {
        transition: all 0.2s ease-in-out;
      }
      .input-group-text {
        transition: all 0.2s ease-in-out;
        border-width: 2px;
        background-color: var(--white-color);
        min-width: 42px;
        justify-content: center;
      }
      .form-control {
        transition: all 0.2s ease-in-out;
        border-width: 2px;
        padding: .6rem 1rem;
        font-size: 1rem;
      }
      .table .btn{
        min-height: 32px;
        padding: 4px 12px;
        height: 32px;
      }

      @media (max-width: 576px) {
        .form-control {
          padding: .5rem .75rem;
          font-size: 0.95rem;
        }
        .input-group-text {
          padding: .5rem .75rem;
          font-size: 0.95rem;
        }
        .btn {
          padding: .5rem 1rem;
          font-size: 0.95rem;
        }
        .d-flex .input-group-append .btn {
            margin: 0px;
        }
        .col-md-8 > .d-flex.justify-content-between,
        .card-body > .d-flex.justify-content-between {
          flex-direction: column;
          justify-content: flex-start !important;
          align-items: flex-start !important;
          padding: 16px 0px;
        }
        .card-body > .d-flex.justify-content-between .btn {
          margin: 1rem 0;
        }
        .btn + .btn {
          margin-left: 12px !important;
        }
        .col-md-8 > .d-flex.justify-content-between > div {
          width: 100%;
        }
        .col-md-8 > .d-flex.justify-content-between > div .btn {
          margin: 0px !important;
          margin-top: 12px !important;
        }
        .table td br {
            display: none;
        }
        .card .card-body .flex-grow-1 h5 {
          padding-right: 65px;
        }
        .card .d-flex.flex-column .collapse .btn + .btn {
          margin-left: 0px !important;
          margin-top: 8px !important;
        }
         
      }
      /* Improve touch targets on mobile */
      @media (max-width: 768px) {
        .nav-link, .dropdown-item {
          padding: .75rem 1rem;
        }
        .btn-group > .btn {
          padding: .75rem 1rem;
        }
        .input-group-text, .btn {
          min-height: 44px;
        }
      }
      .input-group:focus-within {
        transform: translateY(-1px);
      }
      .input-group:focus-within .input-group-text {
        border-color: var(--primary-dark);
        color: var(--primary);
      }
      .input-group:focus-within .form-control {
        border-color: var(--primary-dark);
      }
      .input-group .form-control:focus {
        transform: none;
      }
      .form-control::placeholder {
        color: #b0b0b0;
        font-size: 0.95rem;
      }
      .btn {
        padding: .6rem 1.2rem;
        transition: all 0.2s ease-in-out;
      }
      .btn:hover {
        transform: translateY(-1px);
      }
      .btn:active {
        transform: translateY(0);
      }
      .alert {
        border-radius: 12px;
      }
      .alert-danger {
        color: #853e2a;
      }
      /* Enhanced validation styles */
      .alert-danger {
        background-color: rgba(255, 236, 240, 0.8);
        backdrop-filter: blur(8px);
      }
      .alert-danger p {
        margin: 0;
        padding: 4px 0;
      }
      .alert-danger p:not(:last-child) {
        border-bottom: 1px solid rgba(220, 53, 69, 0.1);
      }
      .input-group-lg>.custom-select, 
      .input-group-lg>.form-control:not(textarea) {
          height: calc(1.5em + 1rem + 10px);
      }
      .form-control {
        height: calc(1.5em + .75rem + 10px);
      }
      .border-left-0 {
          border-left: 1px solid #d4d4d4 !important;
      }
      
      /* Enhanced Responsive Styles */
      @media (max-width: 576px) {
        .card {
          margin: 0 -0.5rem;
          border-radius: 0 !important;
        }
        .card-body {
          padding: 1rem !important;
        }
        .table-responsive {
          margin: 0 -1rem;
          width: calc(100% + 2rem);
        }
        .btn-lg {
          padding: 0.5rem 1rem;
          font-size: 1rem;
        }
        .display-4 {
          font-size: 2rem;
        }
        .lead {
          font-size: 1rem !important;
        }
      }
      
      /* Table Improvements */
      @media (max-width: 768px) {
        .table td {
          padding: 0.75rem 0.5rem;
        }
        .table th {
          padding: 0.75rem 0.5rem;
          white-space: nowrap;
        }
        .table-responsive {
          border-radius: 0.5rem;

        }
      }
      
      /* Form Improvements */
      @media (max-width: 576px) {
        .input-group-text {
          padding: 0.5rem 0.75rem;
        }
        .form-control {
          padding: 0.5rem 0.75rem;
          font-size: 0.95rem;
        }
        label {
          font-size: 0.95rem;
        }
        .custom-control-label {
          font-size: 0.95rem;
        }
      }
      
      /* Button Improvements */
      @media (max-width: 576px) {
        .btn {
          padding: 0.5rem 1rem;
          font-size: 0.95rem;
        }
        .btn-group {
          display: flex;
          width: 100%;
        }
        .btn-group .btn {
          flex: 1;
        }
      }
      
      /* Navigation Improvements */
      @media (max-width: 768px) {
        .navbar-brand {
          font-size: 1.1rem;
        }
        .navbar-toggler {
          padding: 0.4rem 0.6rem;
        }
        .nav-link {
          padding: 0.75rem 1rem;
        }
      }
      
      /* Card Improvements */
      .card {
        transition: transform 0.2s ease-in-out;
      }
      @media (hover: hover) {
        .card:hover {
          transform: translateY(-5px);
        }
      }
      @media (max-width: 576px) {
        .card:hover {
          transform: none;
        }
      }
      
      /* Accessibility Improvements */
      .btn, .nav-link, .form-control {
        min-height: 44px;
      }
      
      /* Enhanced Shadows */
      .shadow-lg {
        box-shadow: 0 10px 25px rgba(0,0,0,0.1) !important;
      }
      
      /* Animation Performance */
      .card, .btn {
        will-change: transform;
        transform: translateZ(0);
      }
      
      /* Dark Mode Considerations */
      @media (prefers-color-scheme: dark) {
        .bg-light {
          background-color: #f8f9fa !important;
        }
        .text-muted {
          color: #6c757d !important;
        }
      }
      
      /* Grid Improvements */
      @media (max-width: 576px) {
        .row {
          margin-left: -8px;
          margin-right: -8px;
        }
        .col, [class*="col-"] {
          padding-left: 8px;
          padding-right: 8px;
        }
      }
      
      /* Typography Improvements */
      @media (max-width: 576px) {
        h1, .h1 { font-size: 1.75rem; }
        h2, .h2 { font-size: 1.5rem; }
        h3, .h3 { font-size: 1.25rem; }
        h4, .h4 { font-size: 1.125rem; }
        .display-4 { font-size: 1.75rem; }
      }      /* Mobile Optimizations */
      @media (max-width: 576px) {
        /* Hide scrollbars but keep functionality */
        .table-responsive {
          scrollbar-width: none;
          -ms-overflow-style: none;
        }
        .table-responsive::-webkit-scrollbar {
          display: none;
        }
        
        /* Optimize text for mobile */
        .h1, h1 { font-size: 1.75rem; }
        .h2, h2 { font-size: 1.5rem; }
        .h3, h3 { font-size: 1.25rem; }
        .display-4 { font-size: 2rem; }
        
        /* Better touch targets */
        .btn, .form-control, .input-group-text {
          min-height: 44px;
        }
        
        /* Improved mobile spacing */
        .card-body { padding: 1rem; }
        .container { padding: 0 1rem; }
        
        /* Stack buttons on mobile */
        .d-flex .btn { width: 100%; margin: .25rem 0; }
        .btn-group { display: flex; flex-direction: column; width: 100%; }
        .btn-group > .btn { margin: .25rem 0; border-radius: 8px !important; }
      }
      
      /* Tablet Optimizations */
      @media (min-width: 577px) and (max-width: 991px) {
        .card-body { padding: 1.25rem; }
        .container { padding: 0 1.5rem; }
      }
      
      /* Touch Device Optimizations */
      @media (hover: none) {
        .btn:hover { transform: none; }
        .card:hover { transform: none; }
        .input-group:focus-within { transform: none; }
      }

      /* PWA Install Prompt */
      #pwaPrompt {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: white;
        padding: 16px;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
        display: none;
        z-index: 1000;
      }
      .navbar-nav .nav-link i {
        margin-right: 8px;
      }