body {
            box-sizing: border-box;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .main-container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            margin: 20px auto;
            max-width: 800px;
        }
        
        .goal-card {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            border-radius: 15px;
            color: white;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 10px 30px rgba(79, 172, 254, 0.3);
        }
        
        .progress-circle {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: conic-gradient(#00f2fe 0deg, #00f2fe var(--progress), rgba(255,255,255,0.3) var(--progress), rgba(255,255,255,0.3) 360deg);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .progress-inner {
            width: 90px;
            height: 90px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
        }
        
        .contribution-card {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 1rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-left: 4px solid #4facfe;
            transition: transform 0.2s ease;
        }
        
        .contribution-card:hover {
            transform: translateY(-2px);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            border-radius: 10px;
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
        }
        
        .btn-success {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            border: none;
            border-radius: 10px;
            padding: 12px 30px;
            font-weight: 600;
        }
        
        .form-control {
            border-radius: 10px;
            border: 2px solid #e9ecef;
            padding: 12px 15px;
            transition: all 0.3s ease;
        }
        
        .form-control:focus {
            border-color: #4facfe;
            box-shadow: 0 0 0 0.2rem rgba(79, 172, 254, 0.25);
        }
        
        .stats-card {
            background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
            border-radius: 15px;
            padding: 1.5rem;
            text-align: center;
            margin-bottom: 1rem;
        }
        
        .icon-lg {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }
        
        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .empty-state {
            text-align: center;
            padding: 3rem;
            color: #6c757d;
        }
        
        .empty-state i {
            font-size: 4rem;
            margin-bottom: 1rem;
            opacity: 0.5;
        }