:root {
            --bg-color: var(--bg);
            --panel-bg: var(--surface);

            --text-color: var(--text);
            --border-color: var(--border);

            --line-num-color: var(--muted);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            margin: 0;
            padding: 20px;
            height: 100vh;
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
        }



        h1 {
            margin: 0;
            font-size: 1.5rem;
        }

        .input-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            height: 40%;
            min-height: 200px;
            margin-bottom: 20px;
        }

        .input-box {
            display: flex;
            flex-direction: column;
        }

        label {
            margin-bottom: 5px;
            font-weight: bold;
            color: var(--muted);
        }

        textarea {
            flex-grow: 1;
            background-color: var(--panel-bg);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 10px;
            font-family: 'Consolas', 'Monaco', monospace;
            font-size: 14px;
            resize: none;
        }

        textarea:focus {
            outline: 1px solid var(--border);
        }

        /* Controls */
        .controls {
            text-align: center;
            margin-bottom: 20px;
        }

        button {
            background-color: var(--bg);
            color: var(--text);
            border: 2px solid var(--border);
            padding: 8px 20px;
            font-size: 1rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
        }

        button:hover {
            background-color: var(--text);
            color: var(--bg);
            opacity: 0.9;
        }

        button.secondary {
            background-color: var(--bg);
            color: var(--text);
        }

        /* Output Area */
        .diff-output {
            flex-grow: 1;
            background-color: var(--bg);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: auto;
            font-family: 'Consolas', 'Monaco', monospace;
            font-size: 14px;
            line-height: 1.5;
        }

        .diff-line {
            display: flex;
            width: 100%;
        }

        .line-num {
            width: 50px;
            text-align: right;
            padding-right: 10px;
            color: var(--line-num-color);
            user-select: none;
            border-right: 1px solid var(--border);
            background-color: var(--tag-bg);
        }

        .line-content {
            padding-left: 10px;
            white-space: pre-wrap;
            word-break: break-all;
            flex-grow: 1;
        }

        /* Colors */
        .diff-added {
            background-color: var(--diff-add-bg);
            color: var(--diff-add-text);
        }

        .diff-removed {
            background-color: var(--diff-del-bg);
            color: var(--diff-del-text);
            text-decoration: line-through;
            opacity: 0.8;
        }

        .diff-header {
            background-color: var(--tag-bg);
            color: var(--muted);
            padding: 5px;
            font-style: italic;
        }

        a {
            color: var(--text);
            text-decoration: none;
            border-bottom: 1px dotted var(--border);
            transition: background-color 0.15s ease, color 0.15s ease;
        }

        a:hover {
            background-color: var(--text);
            color: var(--bg);
        }

        .secondary:hover{
            background-color: var(--text);
            color: var(--bg);
        }

        /*Footer*/
      footer {
            margin-top: 60px;
            padding: 30px 20px;
            text-align: center;
            border-radius: 12px 12px 0 0;
        }

        footer a {
            color: var(--text);
            text-decoration: none;
            font-weight: 900;
            border: 2px solid var(--border);
            padding: 8px 16px;
            display: inline-block;
            transition: all 0.2s ease;
        }

        footer a:hover {
            background: var(--text);
            color: var(--bg);
        }
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
    gap: 20px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.header-actions .dark-mode-toggle {
    position: static;
}

.header-actions .secondary {
    display: inline-block;
    visibility: visible;
    opacity: 1;
}

@media (max-width: 600px) {
    header {
        flex-wrap: wrap;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }
}