@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');
        body {
            font-family: 'Inter', sans-serif;
            transition: background-color 0.3s, color 0.3s;
            background: linear-gradient(to bottom, #f7fafc, #edf2f7);
            margin-bottom: 100px;
        }
        .dark {
            background: linear-gradient(to bottom, #1a1a1a, #2d2d2d);
            color: #e5e5e5;
        }
        .dark .bg-white { background: #2a2a2a; }
        .dark .border { border-color: #4b4b4b; }
        .dark .text-gray-700 { color: #d1d5db; }
        .dark .bg-blue-500 { background: #60a5fa; }
        .dark .bg-green-500 { background: #34d399; }
        .dark .bg-gray-300 { background: #4b4b4b; }
        .dark .hover\:bg-blue-600:hover { background: #3b82f6; }
        .dark .hover\:bg-green-600:hover { background: #22c55e; }
        .dark .hover\:bg-gray-400:hover { background: #c8c8c8; color: black;}
        input, select {
            background: transparent;
            border: 1px solid #d1d5db;
            color: #374151;
            border-radius: 4px;
            padding: 8px;
            transition: border-color 0.3s, color 0.3s;
        }
        .dark input, .dark select {
            border-color: #6b6b6b;
            color: #e5e5e5;
        }
        .top-bar {
            background: linear-gradient(to left, #1e3a8a, #3b82f6);
            padding: 1rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        .dark .top-bar {
            background: linear-gradient(to left, #111827, #1e40af);
        }
        .logo {
            font-family: 'Inter', sans-serif;
            font-weight: 600;
            font-size: 1.5rem;
            color: #ffffff;
            display: flex;
            align-items: center;
            max-height: 50px;
        }
        .logo img {
            width: 50px;
            aspect-ratio: 1;
            margin-right: 0.5rem;
        }
        .switch {
            position: relative;
            display: inline-block;
            width: 60px;
            height: 30px;
        }
        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }
        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: orange;
            transition: 0.3s;
            border-radius: 20px;
        }
        .slider:before {
            position: absolute;
            content: "";
            height: 25px;
            width: 25px;
            left: 2px;
            top: 50%;
            transform: translateY(-50%);
            background: transparent;
            background-image: url(Images/sun.png);
            background-position: center;
            background-repeat: no-repeat;
            background-size: cover;
            transition: 0.3s;
            border-radius: 50%;
        }
        input:checked + .slider {
            background: rgb(255, 255, 255);
        }
        input:checked + .slider:before {
            transform: translateX(30px) translateY(-50%);
            background-image: url(Images/moon.png);
            background-color: transparent;
        }
        .container{
            margin-bottom: 100px;
        }
        .card {
            background: #ffffff;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: background-color 0.3s;
            border: 2px solid black;
        }
        .dark .card {
            background: #2a2a2a;
            box-shadow: 0 4px 6px rgba(0,0,0,0.2);
            border: 2px solid white;
        }
        button {
            color: black;
            transition: background-color 0.1s;
        }
        .pdf-tile {
            cursor: pointer;
            border: 2px solid transparent;
            padding: 4px;
            border-radius: 4px;
            color: greenyellow;
        }
        .pdf-tile.active {
            color: white;
            border-color: #3b82f6;
        }
        .dark .pdf-tile.active {
            border-color: #60a5fa;
        }

        section#bottomSection{
            width: 100%;
            background-image: linear-gradient(to right, rgb(74, 140, 255), rgb(62, 62, 201));
            position: fixed;
            bottom: 0;
            margin-top: 100px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        section#bottomSection h1{
            color: white;
            font-size: 2em;
            font-weight: 900;
            font-family:'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
        }
        div#features{
            font-size: 1em;
            color: white;
        }