body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
        }

        .glass-card-sm { 
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .glass-card-main {
             background: rgba(255, 255, 255, 0.15);
             backdrop-filter: blur(15px);
             -webkit-backdrop-filter: blur(15px);
             border: 1px solid rgba(255, 255, 255, 0.2);
        }

        #weatherCard {
            position: relative;
            background-size: cover;
            background-position: center;
            transition: background-image 0.8s ease-in-out, background-color 0.8s ease-in-out;
            overflow: hidden; 
        }
        
        
        #weatherCard.has-image-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 1;
        }

        
        #weatherCard > * {
            position: relative;
            z-index: 2;
        }

        .search-input {
            background: rgba(255, 255, 255, 0.2);
        }

        .fade-in {
            animation: fadeIn 0.5s ease-in-out;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .hidden {
            display: none;
        }