.ascii-container {
            max-width: 700px;
            margin: 2rem auto;
            padding: 2rem;
            background: var(--card); 
            border-radius: 1rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            font-size: 1.1rem;
            color: var(--text); 
        }

        .ascii-container:hover {
            transform: translateY(-1px);
            opacity: 1;
        }

        .ascii-container h1 {
          font-size: 2rem;
          text-align: center;
        }

        .ascii-container p {
          font-size: 1rem;
          text-align: center;
          margin-bottom: 2rem;
        }

        .ascii-result {
          margin-top: 1.5rem;
          padding: 1rem;
          font-size: 1.3rem;
          text-align: center;
          border-radius: .5rem;
          background: var(--muted); 
          color: var(--text);
        }

        .input-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .input-field {
            width: 100%;
            padding: 0.9rem 1rem;
            border-radius: 10px;
            border: 1px solid var(--border);
            font-size: 1.05rem;
            background: var(--card);
            color: var(--text);
            outline: none;
            transition: border-color 0.2s ease;
        }
        .input-field:focus {
             border-color: var(--primary); 
        }
        
        #color-input {
            width: 100%; 
            height: 44px;
            padding: 0;
            cursor: pointer;
        }
        @media (min-width: 640px) {
            #color-input { width: 80px; } 
        }

        /* Action Buttons Container */
        .actions-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
            padding-top: 1rem;
        }
        @media (min-width: 640px) {
            .actions-grid { grid-template-columns: 1fr 1fr; }
        }

        /* Output Area */
        .output-box {
            position: relative;
            background: var(--muted); 
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid var(--border);
            overflow-x: auto;
            margin-top: 1rem;
            min-height: 150px; 
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
        }

        /* Use a monospaced font for the ASCII art output */
        #output {
            font-family: 'Courier New', Courier, monospace;
            white-space: pre;
            word-wrap: break-word;
            font-size: 0.9rem;
            line-height: 1.2;
            color: var(--text);
            margin: 0; 
        }

        /* Loading Spinner */
        #loading-spinner {
            position: absolute;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            background: var(--card);
            opacity: 0.8;
            border-radius: 10px;
            z-index: 10;
        }
        .spinner-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 4px solid var(--border);
            border-top-color: var(--primary);
            animation: spin 1s linear infinite;
        }
        @keyframes spin{to{transform:rotate(360deg)}}

        /* Message Box */
        #message-box {
            position: fixed;
            bottom: 1rem;
            left: 50%;
            transform: translateX(-50%);
            background: #10b981; 
            color: #fff;
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 50;
        }

        .btn{
            font-size: 1rem;
        }