.tool-container {
            max-width: 900px;
            margin: 40px auto;
            padding: 24px;
            background: var(--card-bg);
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
.header-center {
            text-align: center;
            margin-bottom: 32px;
        }
p.desc {
            opacity: 0.7;
            font-size: 0.95rem;
        }
label {
            display: block;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 6px;
        }
textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--card-bg);
            color: var(--text-color);
            font-size: 0.95rem;
            line-height: 1.5;
            resize: vertical;
            margin-bottom: 20px;
            height: 160px;
        }
textarea:focus {
            outline: none;
            border-color: var(--primary-color);
        }
#outputText {
            background: var(--bg-color);
        }
.btn-primary {
            display: block;
            width: 100%;
            max-width: 300px;
            margin: 0 auto;
            padding: 12px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-ink);
            background: var(--primary-color);
            cursor: pointer;
        }
.btn-primary:hover {
            opacity: 0.9;
        }
.notification {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            padding: 12px 24px;
            border-radius: 99px;
            color: var(--accent-ink);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, opacity 0.3s;
            opacity: 0;
            z-index: 1000;
        }
.notification.show {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
        }
.bg-green {
            background: var(--ok);
        }
.bg-red {
            background: var(--svg);
        }