diff --git a/webrepl/webrepl.css b/webrepl/webrepl.css
index e723c7bb..35515404 100644
--- a/webrepl/webrepl.css
+++ b/webrepl/webrepl.css
@@ -1,13 +1,140 @@
+:root {
+    color-scheme: light;
+    --bg: #ffffff;
+    --panel: #f6f7f9;
+    --panel-border: #e1e5ea;
+    --text: #1c1f24;
+    --muted: #5c6572;
+    --accent: #f0a010;
+    --accent-hover: #e08f00;
+    --accent-active: #cc7f00;
+    --shadow: 0 10px 30px rgba(19, 27, 43, 0.08);
+    --radius: 12px;
+    --focus-ring: 0 0 0 3px rgba(240, 160, 16, 0.3);
+}
+
+* {
+    box-sizing: border-box;
+}
+
 html {
-    background: #555;
+    background: var(--bg);
+}
+
+body {
+    margin: 0;
+    padding: 24px 28px 32px;
+    font: 16px/1.6 "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
+    color: var(--text);
+    background: var(--bg);
 }
 
 h1 {
-    margin-bottom: 20px;
-    font: 20px/1.5 sans-serif;
+    margin: 0 0 20px;
+    font: 600 24px/1.3 "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
+    color: var(--text);
 }
+
+form {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 12px;
+    align-items: center;
+    margin-bottom: 16px;
+}
+
+/* Fixed-height wrapper keeps the terminal footprint stable; rows are computed from this height. */
+#term-wrapper {
+    height: 420px;
+}
+
+/* Terminal fills the wrapper; row count is recalculated on load/resize only. */
+#term {
+    height: 100%;
+    border-radius: var(--radius);
+    border: 1px solid var(--panel-border);
+    background: #0f141b;
+    color: #f1f5f9;
+    padding: 8px;
+    box-shadow: var(--shadow);
+    overflow: hidden;
+}
+
+#file-boxes {
+    margin-left: 20px;
+}
+
 .file-box {
-    margin: 4px;
-    padding: 4px;
-    background: #888;
+    margin: 0 0 16px;
+    padding: 14px 16px 16px;
+    background: var(--panel);
+    border: 1px solid var(--panel-border);
+    border-radius: var(--radius);
+    box-shadow: var(--shadow);
+    display: grid;
+    gap: 10px;
+}
+
+.file-box strong {
+    font-size: 15px;
+}
+
+#file-status {
+    color: var(--muted);
+    font-size: 14px;
+}
+
+input[type="text"],
+input[type="file"] {
+    width: 100%;
+    padding: 10px 12px;
+    border-radius: 10px;
+    border: 1px solid var(--panel-border);
+    background: #ffffff;
+    color: var(--text);
+    font-size: 14px;
+}
+
+input[type="text"]:focus,
+input[type="file"]:focus {
+    outline: none;
+    border-color: var(--accent);
+    box-shadow: var(--focus-ring);
+}
+
+input[type="submit"],
+input[type="button"] {
+    padding: 10px 16px;
+    border-radius: 999px;
+    border: none;
+    background: var(--accent);
+    color: #1a1200;
+    font-weight: 600;
+    font-size: 14px;
+    cursor: pointer;
+    transition: transform 0.08s ease, background 0.15s ease, box-shadow 0.15s ease;
+    box-shadow: 0 8px 18px rgba(240, 160, 16, 0.35);
+}
+
+input[type="submit"]:hover,
+input[type="button"]:hover {
+    background: var(--accent-hover);
+    transform: translateY(-1px);
+}
+
+input[type="submit"]:active,
+input[type="button"]:active {
+    background: var(--accent-active);
+    transform: translateY(0);
+}
+
+input[type="submit"]:focus,
+input[type="button"]:focus {
+    outline: none;
+    box-shadow: var(--focus-ring);
+}
+
+i {
+    color: var(--muted);
+    font-size: 13px;
 }
diff --git a/webrepl/webrepl.html b/webrepl/webrepl.html
index 226a0e74..6aa7e6a7 100644
--- a/webrepl/webrepl.html
+++ b/webrepl/webrepl.html
@@ -13,7 +13,8 @@
 <input type="text" name="webrepl_url" id="url" value="" />
 <input type="submit" id="button" value="Connect" onclick="button_click(); return false;" />
 </form>
-<div id="term">
+<div id="term-wrapper">
+  <div id="term"></div>
 </div>
 </div>
 
@@ -42,5 +43,6 @@
 </body>
 
 <script src="webrepl.js"></script>
+<script src="webrepl_tweaks.js"></script>
 
 </html>
diff --git a/webrepl/webrepl_tweaks.js b/webrepl/webrepl_tweaks.js
new file mode 100644
index 00000000..28f39d3e
--- /dev/null
+++ b/webrepl/webrepl_tweaks.js
@@ -0,0 +1,91 @@
+// Set terminal height dynamically, without modifying webrepl.js
+(function() {
+    var maxReadyAttempts = 90;
+    var readyAttempts = 0;
+    var resizeScheduled = false;
+    var resizeDebounce = null;
+
+    function get_term_container() {
+        return document.getElementById('term');
+    }
+
+    // Wrapper keeps a fixed height; rows are derived from its rendered height.
+    function get_term_wrapper() {
+        return document.getElementById('term-wrapper') || get_term_container();
+    }
+
+    // Compute rows once on load/resize using wrapper height and terminal padding.
+    function calculate_dynamic_rows() {
+        var wrapper = get_term_wrapper();
+        var termContainer = get_term_container();
+        if (!wrapper || !termContainer) {
+            return null;
+        }
+        var rect = wrapper.getBoundingClientRect();
+        var height = rect.height || wrapper.clientHeight || window.innerHeight;
+        var style = window.getComputedStyle(termContainer);
+        var paddingTop = parseFloat(style.paddingTop) || 0;
+        var paddingBottom = parseFloat(style.paddingBottom) || 0;
+        var contentHeight = height - paddingTop - paddingBottom;
+        return Math.max(24, Math.min(80, (contentHeight - 20) / 12)) | 0;
+    }
+
+    function resize_term_rows() {
+        if (!window.term || !window.term.resize) {
+            return false;
+        }
+        var rows = calculate_dynamic_rows();
+        if (rows === null) {
+            return false;
+        }
+        var cols = window.term.cols || 80;
+        if (window.term.rows !== rows) {
+            window.term.resize(cols, rows);
+        }
+        return true;
+    }
+
+    function schedule_resize() {
+        if (resizeScheduled) {
+            return;
+        }
+        resizeScheduled = true;
+        window.requestAnimationFrame(function() {
+            resizeScheduled = false;
+            resize_term_rows();
+        });
+    }
+
+    function schedule_resize_debounced() {
+        if (resizeDebounce) {
+            window.clearTimeout(resizeDebounce);
+        }
+        resizeDebounce = window.setTimeout(function() {
+            resizeDebounce = null;
+            schedule_resize();
+        }, 80);
+    }
+
+    function wait_for_term_ready() {
+        if (window.term && window.term.resize) {
+            schedule_resize_debounced();
+            if (resize_term_rows()) {
+                return;
+            }
+        }
+        if (readyAttempts >= maxReadyAttempts) {
+            return;
+        }
+        readyAttempts += 1;
+        window.requestAnimationFrame(wait_for_term_ready);
+    }
+
+    window.addEventListener('load', function() {
+        wait_for_term_ready();
+        schedule_resize_debounced();
+    });
+
+    window.addEventListener('resize', function() {
+        schedule_resize_debounced();
+    });
+}).call(this);