* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }

        /* Header */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        nav {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #667eea;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s ease;
            cursor: pointer;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #667eea;
        }

        /* Main Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        /* Pages */
        .page {
            display: none;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            animation: fadeIn 0.5s ease-in;
        }

        .page.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Home Page */
        .hero {
            text-align: center;
            padding: 3rem 0;
        }

        .hero h1 {
            font-size: 3rem;
            color: #333;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 2rem;
            max-width: 600px;
            margin: 0 auto 2rem;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .feature-card {
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            border: 1px solid rgba(102, 126, 234, 0.2);
        }

        .feature-card h3 {
            color: #667eea;
            margin-bottom: 1rem;
        }

        /* Form Styles */
        .form-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #333;
            font-weight: 500;
        }

        input, select, textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #e1e1e1;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
            background: rgba(255, 255, 255, 0.9);
        }

        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }

        .btn {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
        }

        /* Cards */
        .needs-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .need-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
            border-radius: 15px;
            padding: 1.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(102, 126, 234, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .need-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }

        .need-card h3 {
            color: #667eea;
            margin-bottom: 0.5rem;
        }

        .need-card .institution {
            color: #764ba2;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        .need-card .type {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            display: inline-block;
            margin-bottom: 1rem;
        }

        .need-card .description {
            color: #666;
            margin-bottom: 1rem;
            line-height: 1.5;
        }

        .need-card .contact {
            color: #333;
            font-size: 0.9rem;
        }

        .need-card .location {
            color: #888;
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }

        /* Search and Filter */
        .search-filter {
            display: flex;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .search-filter input,
        .search-filter select {
            flex: 1;
            min-width: 200px;
        }

        .no-results {
            text-align: center;
            color: #666;
            font-size: 1.2rem;
            margin: 3rem 0;
        }

        /* Footer */
        footer {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
            color: #666;
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            nav {
                padding: 0 1rem;
            }

            .container {
                padding: 1rem;
            }

            .page {
                padding: 1rem;
            }

            .search-filter {
                flex-direction: column;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .needs-container {
                grid-template-columns: 1fr;
            }
        }

        /* Mobile Navigation */
        .mobile-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem;
            box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.1);
        }

        .mobile-nav-links {
            display: flex;
            justify-content: space-around;
            list-style: none;
        }

        .mobile-nav-links a {
            text-decoration: none;
            color: #333;
            font-size: 0.9rem;
            text-align: center;
            padding: 0.5rem;
        }

        @media (max-width: 768px) {
            .mobile-nav {
                display: block;
            }
            
            body {
                padding-bottom: 80px;
            }
        }

        .success-message {
            background: linear-gradient(135deg, #4CAF50, #45a049);
            color: white;
            padding: 1rem;
            border-radius: 10px;
            margin-bottom: 1rem;
            text-align: center;
        }

        .error-message {
            background: linear-gradient(135deg, #f44336, #d32f2f);
            color: white;
            padding: 1rem;
            border-radius: 10px;
            margin-bottom: 1rem;
            text-align: center;
        }