diff --git a/app.py b/app.py
index 7ad9fe2..530f23f 100644
--- a/app.py
+++ b/app.py
@@ -67,6 +67,7 @@ def _random_ua():
 # ---------------------------------------------------------------------------
 def _base_opts(extra=None):
     opts = {
+        "quiet": True,
         "cachedir": CACHE_DIR,
         "js_runtimes": {"node": {"executable": "/usr/bin/node"}},
         "http_headers": {"User-Agent": _random_ua()},
diff --git a/static/app.js b/static/app.js
new file mode 100644
index 0000000..1b85051
--- /dev/null
+++ b/static/app.js
@@ -0,0 +1,207 @@
+let selectedMediaType    = 'video';
+let selectedOutputFormat = 'mp4';
+let pollTimer            = null;
+let debounceTimer        = null;
+let currentFetchController = null;
+
+let availableFormats = { audio: [], video: [] };
+
+// ---------------------------------------------------------------------------
+// Only fire /info when the input looks like a real supported URL.
+// ---------------------------------------------------------------------------
+const URL_RE = /^https?:\/\/(www\.)?(youtube\.com\/(watch|shorts|live)|youtu\.be|vimeo\.com|dailymotion\.com|twitch\.tv|soundcloud\.com)/i;
+
+function looksLikeVideoUrl(str) {
+  try { new URL(str); } catch { return false; }
+  return URL_RE.test(str);
+}
+
+// ---------------------------------------------------------------------------
+// Format chips
+// ---------------------------------------------------------------------------
+async function loadFormats() {
+  try {
+    const res = await fetch('/formats');
+    availableFormats = await res.json();
+  } catch {
+    availableFormats = {
+      audio: ['mp3','aac','m4a','opus','flac','wav','vorbis','alac'],
+      video: ['mp4','mkv','webm','mov','avi','flv'],
+    };
+  }
+  renderFormatChips();
+}
+
+function setMediaType(type) {
+  selectedMediaType = type;
+  document.querySelectorAll('.fmt-btn').forEach(b => b.classList.toggle('active', b.dataset.fmt === type));
+  renderFormatChips();
+}
+
+function renderFormatChips() {
+  const list = selectedMediaType === 'audio' ? availableFormats.audio : availableFormats.video;
+  const def  = list[0] || (selectedMediaType === 'audio' ? 'mp3' : 'mp4');
+  selectedOutputFormat = def;
+  document.getElementById('format-chips').innerHTML = list.map(f =>
+    `<button class="chip${f === def ? ' selected' : ''}" onclick="selectFormat(this,'${f}')">${f}</button>`
+  ).join('');
+}
+
+function selectFormat(el, f) {
+  document.querySelectorAll('#format-chips .chip').forEach(c => c.classList.remove('selected'));
+  el.classList.add('selected');
+  selectedOutputFormat = f;
+}
+
+// ---------------------------------------------------------------------------
+// UI helpers
+// ---------------------------------------------------------------------------
+function fmtDuration(s) {
+  if (!s) return '';
+  const h = Math.floor(s / 3600), m = Math.floor((s % 3600) / 60), sec = s % 60;
+  return h
+    ? `${h}:${String(m).padStart(2,'0')}:${String(sec).padStart(2,'0')}`
+    : `${m}:${String(sec).padStart(2,'0')}`;
+}
+
+function showStatus(msg, type) {
+  const el = document.getElementById('status-msg');
+  el.textContent = msg; el.className = type;
+}
+
+function clearStatus() {
+  const el = document.getElementById('status-msg');
+  el.className = ''; el.textContent = '';
+}
+
+// ---------------------------------------------------------------------------
+// Auto-fetch video info (debounced, abortable, URL-guarded)
+// ---------------------------------------------------------------------------
+async function fetchInfo() {
+  const url = document.getElementById('url-input').value.trim();
+
+  if (!looksLikeVideoUrl(url)) {
+    document.getElementById('info-box').classList.remove('visible');
+    clearStatus();
+    return;
+  }
+
+  if (currentFetchController) currentFetchController.abort();
+  currentFetchController = new AbortController();
+
+  clearStatus();
+  document.getElementById('info-box').classList.remove('visible');
+  document.getElementById('url-spinner').classList.add('active');
+
+  try {
+    const res  = await fetch('/info', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ url }),
+      signal: currentFetchController.signal,
+    });
+    const data = await res.json();
+
+    if (data.error) { showStatus('⚠ ' + data.error, 'error'); return; }
+
+    document.getElementById('thumb').src              = data.thumbnail || '';
+    document.getElementById('vid-title').textContent  = data.title || 'Unknown';
+    document.getElementById('vid-meta').textContent   =
+      [data.uploader, fmtDuration(data.duration)].filter(Boolean).join(' · ');
+    document.getElementById('info-box').classList.add('visible');
+
+  } catch (e) {
+    if (e.name !== 'AbortError') showStatus('⚠ Could not reach server.', 'error');
+  } finally {
+    document.getElementById('url-spinner').classList.remove('active');
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Download
+// ---------------------------------------------------------------------------
+async function startDownload() {
+  const url = document.getElementById('url-input').value.trim();
+  if (!url) { showStatus('⚠ Please enter a URL.', 'error'); return; }
+  clearStatus();
+
+  if (currentFetchController) { currentFetchController.abort(); currentFetchController = null; }
+  document.getElementById('url-spinner').classList.remove('active');
+
+  const btn = document.getElementById('start-btn');
+  btn.disabled  = true;
+  btn.innerHTML = '<span class="spin"></span> Starting...';
+
+  document.getElementById('download-btn-wrap').style.display = 'none';
+  document.getElementById('progress-box').classList.add('visible');
+  document.getElementById('progress-label').textContent = 'Downloading...';
+  document.getElementById('progress-fill').style.width  = '0%';
+  document.getElementById('prog-pct').textContent       = '0%';
+  document.getElementById('prog-speed').textContent     = '';
+
+  try {
+    const res  = await fetch('/download', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ url, format: selectedMediaType, chosen_format: selectedOutputFormat }),
+    });
+    const data = await res.json();
+    if (data.error) { showStatus('⚠ ' + data.error, 'error'); resetBtn(); return; }
+    pollStatus(data.job_id);
+  } catch {
+    showStatus('⚠ Server error.', 'error');
+    resetBtn();
+  }
+}
+
+function pollStatus(jobId) {
+  if (pollTimer) clearInterval(pollTimer);
+  pollTimer = setInterval(async () => {
+    try {
+      const data = await (await fetch('/status/' + jobId)).json();
+
+      if (data.progress !== undefined) {
+        document.getElementById('progress-fill').style.width = data.progress + '%';
+        document.getElementById('prog-pct').textContent      = data.progress + '%';
+        if (data.speed) document.getElementById('prog-speed').textContent =
+          data.speed + (data.eta ? ' · ETA ' + data.eta : '');
+      }
+
+      if (data.status === 'done') {
+        clearInterval(pollTimer);
+        document.getElementById('progress-label').textContent = 'Complete!';
+        document.getElementById('prog-speed').textContent     = '';
+        showStatus('✓ Download ready: ' + (data.title || 'file'), 'success');
+        document.getElementById('dl-link').href              = '/file/' + jobId;
+        document.getElementById('dl-link').download          = true;
+        document.getElementById('download-btn-wrap').style.display = 'flex';
+        resetBtn();
+      } else if (data.status === 'error') {
+        clearInterval(pollTimer);
+        showStatus('⚠ ' + (data.error || 'Unknown error'), 'error');
+        document.getElementById('progress-box').classList.remove('visible');
+        resetBtn();
+      }
+    } catch { /* ignore transient poll errors */ }
+  }, 800);
+}
+
+function resetBtn() {
+  const btn = document.getElementById('start-btn');
+  btn.disabled = false; btn.innerHTML = 'Download';
+}
+
+// ---------------------------------------------------------------------------
+// Event listeners
+// ---------------------------------------------------------------------------
+document.getElementById('url-input').addEventListener('input', () => {
+  clearTimeout(debounceTimer);
+  debounceTimer = setTimeout(fetchInfo, 1200);
+});
+
+document.getElementById('url-input').addEventListener('paste', () => {
+  clearTimeout(debounceTimer);
+  debounceTimer = setTimeout(fetchInfo, 400);
+});
+
+loadFormats();
diff --git a/static/style.css b/static/style.css
new file mode 100644
index 0000000..cc12814
--- /dev/null
+++ b/static/style.css
@@ -0,0 +1,295 @@
+:root {
+  --bg: #0a0a0a;
+  --surface: #111111;
+  --border: #222222;
+  --accent: #e8ff47;
+  --accent2: #ff6b35;
+  --text: #f0f0f0;
+  --muted: #666666;
+  --radius: 4px;
+}
+
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+body {
+  background: var(--bg);
+  color: var(--text);
+  font-family: 'Syne', sans-serif;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 60px 20px 80px;
+  background-image:
+    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(232,255,71,0.07) 0%, transparent 70%),
+    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px),
+    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px);
+}
+
+header {
+  text-align: center;
+  margin-bottom: 56px;
+  animation: fadeDown 0.6s ease both;
+}
+
+.logo {
+  font-size: clamp(3rem, 8vw, 5.5rem);
+  font-weight: 800;
+  letter-spacing: -0.03em;
+  line-height: 1;
+  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+}
+
+.tagline {
+  font-family: 'Space Mono', monospace;
+  color: var(--muted);
+  font-size: 0.75rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  margin-top: 8px;
+}
+
+.card {
+  width: 100%;
+  max-width: 640px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  padding: 36px;
+  animation: fadeUp 0.5s ease 0.1s both;
+}
+
+.section-label {
+  font-family: 'Space Mono', monospace;
+  font-size: 0.65rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--muted);
+  margin-bottom: 10px;
+}
+
+.url-row {
+  display: flex;
+  gap: 10px;
+  margin-bottom: 28px;
+  position: relative;
+}
+
+input[type="text"] {
+  flex: 1;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  color: var(--text);
+  font-family: 'Space Mono', monospace;
+  font-size: 0.82rem;
+  padding: 12px 42px 12px 14px;
+  outline: none;
+  transition: border-color 0.2s;
+}
+input[type="text"]:focus { border-color: var(--accent); }
+input[type="text"]::placeholder { color: var(--muted); }
+
+.url-spinner {
+  position: absolute;
+  right: 14px;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 14px;
+  height: 14px;
+  border: 2px solid var(--border);
+  border-top-color: var(--accent);
+  border-radius: 50%;
+  animation: spin 0.6s linear infinite;
+  display: none;
+}
+.url-spinner.active { display: block; }
+
+.btn {
+  font-family: 'Syne', sans-serif;
+  font-weight: 700;
+  font-size: 0.85rem;
+  letter-spacing: 0.05em;
+  padding: 12px 20px;
+  border: none;
+  border-radius: var(--radius);
+  cursor: pointer;
+  transition: all 0.15s;
+  white-space: nowrap;
+}
+.btn-accent { background: var(--accent); color: #000; }
+.btn-accent:hover { background: #d4eb3a; transform: translateY(-1px); }
+.btn-accent:active { transform: translateY(0); }
+.btn-accent:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
+
+#info-box {
+  display: none;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 16px;
+  margin-bottom: 24px;
+  gap: 14px;
+  animation: fadeUp 0.3s ease both;
+}
+#info-box.visible { display: flex; }
+
+.thumb-wrap {
+  flex-shrink: 0;
+  width: 100px;
+  height: 60px;
+  border-radius: 4px;
+  overflow: hidden;
+  background: var(--border);
+}
+.thumb-wrap img { width: 100%; height: 100%; object-fit: cover; }
+
+.info-meta { flex: 1; min-width: 0; }
+
+.info-title {
+  font-weight: 700;
+  font-size: 0.9rem;
+  line-height: 1.3;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  margin-bottom: 6px;
+}
+
+.info-sub {
+  font-family: 'Space Mono', monospace;
+  font-size: 0.7rem;
+  color: var(--muted);
+}
+
+.format-toggle {
+  display: flex;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  overflow: hidden;
+  margin-bottom: 20px;
+}
+
+.fmt-btn {
+  flex: 1;
+  padding: 11px;
+  text-align: center;
+  cursor: pointer;
+  font-family: 'Syne', sans-serif;
+  font-weight: 600;
+  font-size: 0.82rem;
+  border: none;
+  background: transparent;
+  color: var(--muted);
+  transition: all 0.15s;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 7px;
+}
+.fmt-btn.active { background: var(--accent); color: #000; }
+.fmt-btn:not(.active):hover { color: var(--text); }
+
+#format-row { margin-bottom: 28px; }
+
+.format-chips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin-top: 10px;
+}
+
+.chip {
+  font-family: 'Space Mono', monospace;
+  font-size: 0.72rem;
+  padding: 6px 14px;
+  border: 1px solid var(--border);
+  border-radius: 20px;
+  cursor: pointer;
+  color: var(--muted);
+  transition: all 0.15s;
+  background: transparent;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+.chip.selected { border-color: var(--accent); color: var(--accent); background: rgba(232,255,71,0.07); }
+.chip:hover:not(.selected) { border-color: #444; color: var(--text); }
+
+#progress-box { display: none; margin-bottom: 24px; }
+#progress-box.visible { display: block; }
+
+.progress-bar-bg {
+  height: 6px;
+  background: var(--border);
+  border-radius: 3px;
+  overflow: hidden;
+  margin: 10px 0 8px;
+}
+
+.progress-bar-fill {
+  height: 100%;
+  background: linear-gradient(90deg, var(--accent), var(--accent2));
+  border-radius: 3px;
+  width: 0%;
+  transition: width 0.4s ease;
+}
+
+.progress-meta {
+  font-family: 'Space Mono', monospace;
+  font-size: 0.68rem;
+  color: var(--muted);
+  display: flex;
+  justify-content: space-between;
+}
+
+#status-msg {
+  font-family: 'Space Mono', monospace;
+  font-size: 0.72rem;
+  padding: 10px 14px;
+  border-radius: var(--radius);
+  margin-bottom: 20px;
+  display: none;
+}
+#status-msg.error {
+  background: rgba(255,80,80,0.1);
+  border: 1px solid rgba(255,80,80,0.3);
+  color: #ff8080;
+  display: block;
+}
+#status-msg.success {
+  background: rgba(232,255,71,0.08);
+  border: 1px solid rgba(232,255,71,0.3);
+  color: var(--accent);
+  display: block;
+}
+
+.action-row { display: flex; gap: 10px; justify-content: flex-end; }
+#download-btn-wrap { display: none; }
+
+.spin {
+  display: inline-block;
+  width: 12px; height: 12px;
+  border: 2px solid rgba(0,0,0,0.3);
+  border-top-color: #000;
+  border-radius: 50%;
+  animation: spin 0.6s linear infinite;
+  vertical-align: middle;
+}
+
+@keyframes spin     { to { transform: rotate(360deg); } }
+@keyframes fadeDown { from { opacity:0; transform:translateY(-20px); } to { opacity:1; transform:translateY(0); } }
+@keyframes fadeUp   { from { opacity:0; transform:translateY(16px);  } to { opacity:1; transform:translateY(0); } }
+
+footer {
+  margin-top: 48px;
+  font-family: 'Space Mono', monospace;
+  font-size: 0.65rem;
+  color: #333;
+  letter-spacing: 0.1em;
+  text-align: center;
+  animation: fadeUp 0.5s ease 0.3s both;
+}
diff --git a/templates/index.html b/templates/index.html
index cad296e..788ef83 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -3,308 +3,10 @@
 <head>
 <meta charset="UTF-8" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<title>VDROP — Video Downloader</title>
+<title>VDROP</title>
 <link rel="preconnect" href="https://fonts.googleapis.com" />
 <link href="https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Syne:wght@400;600;700;800&display=swap" rel="stylesheet" />
-<style>
-  :root {
-    --bg: #0a0a0a;
-    --surface: #111111;
-    --border: #222222;
-    --accent: #e8ff47;
-    --accent2: #ff6b35;
-    --text: #f0f0f0;
-    --muted: #666666;
-    --radius: 4px;
-  }
-
-  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
-
-  body {
-    background: var(--bg);
-    color: var(--text);
-    font-family: 'Syne', sans-serif;
-    min-height: 100vh;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    padding: 60px 20px 80px;
-    background-image:
-      radial-gradient(ellipse 80% 50% at 50% -10%, rgba(232,255,71,0.07) 0%, transparent 70%),
-      repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px),
-      repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px);
-  }
-
-  header {
-    text-align: center;
-    margin-bottom: 56px;
-    animation: fadeDown 0.6s ease both;
-  }
-
-  .logo {
-    font-size: clamp(3rem, 8vw, 5.5rem);
-    font-weight: 800;
-    letter-spacing: -0.03em;
-    line-height: 1;
-    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
-    -webkit-background-clip: text;
-    -webkit-text-fill-color: transparent;
-    background-clip: text;
-  }
-
-  .tagline {
-    font-family: 'Space Mono', monospace;
-    color: var(--muted);
-    font-size: 0.75rem;
-    letter-spacing: 0.2em;
-    text-transform: uppercase;
-    margin-top: 8px;
-  }
-
-  .card {
-    width: 100%;
-    max-width: 640px;
-    background: var(--surface);
-    border: 1px solid var(--border);
-    border-radius: 12px;
-    padding: 36px;
-    animation: fadeUp 0.5s ease 0.1s both;
-  }
-
-  .section-label {
-    font-family: 'Space Mono', monospace;
-    font-size: 0.65rem;
-    letter-spacing: 0.18em;
-    text-transform: uppercase;
-    color: var(--muted);
-    margin-bottom: 10px;
-  }
-
-  .url-row {
-    display: flex;
-    gap: 10px;
-    margin-bottom: 28px;
-    position: relative;
-  }
-
-  input[type="text"] {
-    flex: 1;
-    background: var(--bg);
-    border: 1px solid var(--border);
-    border-radius: var(--radius);
-    color: var(--text);
-    font-family: 'Space Mono', monospace;
-    font-size: 0.82rem;
-    padding: 12px 42px 12px 14px;
-    outline: none;
-    transition: border-color 0.2s;
-  }
-
-  input[type="text"]:focus { border-color: var(--accent); }
-  input[type="text"]::placeholder { color: var(--muted); }
-
-  .url-spinner {
-    position: absolute;
-    right: 14px;
-    top: 50%;
-    transform: translateY(-50%);
-    width: 14px;
-    height: 14px;
-    border: 2px solid var(--border);
-    border-top-color: var(--accent);
-    border-radius: 50%;
-    animation: spin 0.6s linear infinite;
-    display: none;
-  }
-  .url-spinner.active { display: block; }
-
-  .btn {
-    font-family: 'Syne', sans-serif;
-    font-weight: 700;
-    font-size: 0.85rem;
-    letter-spacing: 0.05em;
-    padding: 12px 20px;
-    border: none;
-    border-radius: var(--radius);
-    cursor: pointer;
-    transition: all 0.15s;
-    white-space: nowrap;
-  }
-
-  .btn-accent { background: var(--accent); color: #000; }
-  .btn-accent:hover { background: #d4eb3a; transform: translateY(-1px); }
-  .btn-accent:active { transform: translateY(0); }
-  .btn-accent:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
-
-  #info-box {
-    display: none;
-    background: var(--bg);
-    border: 1px solid var(--border);
-    border-radius: 8px;
-    padding: 16px;
-    margin-bottom: 24px;
-    gap: 14px;
-    animation: fadeUp 0.3s ease both;
-  }
-  #info-box.visible { display: flex; }
-
-  .thumb-wrap {
-    flex-shrink: 0;
-    width: 100px;
-    height: 60px;
-    border-radius: 4px;
-    overflow: hidden;
-    background: var(--border);
-  }
-  .thumb-wrap img { width: 100%; height: 100%; object-fit: cover; }
-
-  .info-meta { flex: 1; min-width: 0; }
-
-  .info-title {
-    font-weight: 700;
-    font-size: 0.9rem;
-    line-height: 1.3;
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-    margin-bottom: 6px;
-  }
-
-  .info-sub {
-    font-family: 'Space Mono', monospace;
-    font-size: 0.7rem;
-    color: var(--muted);
-  }
-
-  .format-toggle {
-    display: flex;
-    background: var(--bg);
-    border: 1px solid var(--border);
-    border-radius: var(--radius);
-    overflow: hidden;
-    margin-bottom: 20px;
-  }
-
-  .fmt-btn {
-    flex: 1;
-    padding: 11px;
-    text-align: center;
-    cursor: pointer;
-    font-family: 'Syne', sans-serif;
-    font-weight: 600;
-    font-size: 0.82rem;
-    border: none;
-    background: transparent;
-    color: var(--muted);
-    transition: all 0.15s;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    gap: 7px;
-  }
-  .fmt-btn.active { background: var(--accent); color: #000; }
-  .fmt-btn:not(.active):hover { color: var(--text); }
-
-  #format-row { margin-bottom: 28px; }
-
-  .format-chips {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 8px;
-    margin-top: 10px;
-  }
-
-  .chip {
-    font-family: 'Space Mono', monospace;
-    font-size: 0.72rem;
-    padding: 6px 14px;
-    border: 1px solid var(--border);
-    border-radius: 20px;
-    cursor: pointer;
-    color: var(--muted);
-    transition: all 0.15s;
-    background: transparent;
-    text-transform: uppercase;
-    letter-spacing: 0.05em;
-  }
-  .chip.selected { border-color: var(--accent); color: var(--accent); background: rgba(232,255,71,0.07); }
-  .chip:hover:not(.selected) { border-color: #444; color: var(--text); }
-
-  #progress-box { display: none; margin-bottom: 24px; }
-  #progress-box.visible { display: block; }
-
-  .progress-bar-bg {
-    height: 6px;
-    background: var(--border);
-    border-radius: 3px;
-    overflow: hidden;
-    margin: 10px 0 8px;
-  }
-
-  .progress-bar-fill {
-    height: 100%;
-    background: linear-gradient(90deg, var(--accent), var(--accent2));
-    border-radius: 3px;
-    width: 0%;
-    transition: width 0.4s ease;
-  }
-
-  .progress-meta {
-    font-family: 'Space Mono', monospace;
-    font-size: 0.68rem;
-    color: var(--muted);
-    display: flex;
-    justify-content: space-between;
-  }
-
-  #status-msg {
-    font-family: 'Space Mono', monospace;
-    font-size: 0.72rem;
-    padding: 10px 14px;
-    border-radius: var(--radius);
-    margin-bottom: 20px;
-    display: none;
-  }
-  #status-msg.error {
-    background: rgba(255,80,80,0.1);
-    border: 1px solid rgba(255,80,80,0.3);
-    color: #ff8080;
-    display: block;
-  }
-  #status-msg.success {
-    background: rgba(232,255,71,0.08);
-    border: 1px solid rgba(232,255,71,0.3);
-    color: var(--accent);
-    display: block;
-  }
-
-  .action-row { display: flex; gap: 10px; justify-content: flex-end; }
-  #download-btn-wrap { display: none; }
-
-  .spin {
-    display: inline-block;
-    width: 12px; height: 12px;
-    border: 2px solid rgba(0,0,0,0.3);
-    border-top-color: #000;
-    border-radius: 50%;
-    animation: spin 0.6s linear infinite;
-    vertical-align: middle;
-  }
-
-  @keyframes spin    { to { transform: rotate(360deg); } }
-  @keyframes fadeDown { from { opacity:0; transform:translateY(-20px); } to { opacity:1; transform:translateY(0); } }
-  @keyframes fadeUp   { from { opacity:0; transform:translateY(16px);  } to { opacity:1; transform:translateY(0); } }
-
-  footer {
-    margin-top: 48px;
-    font-family: 'Space Mono', monospace;
-    font-size: 0.65rem;
-    color: #333;
-    letter-spacing: 0.1em;
-    text-align: center;
-    animation: fadeUp 0.5s ease 0.3s both;
-  }
-</style>
+<link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}" />
 </head>
 <body>
 
@@ -315,7 +17,7 @@
 
 <div class="card">
 
-  <div class="section-label">Paste URL</div>
+  <div class="section-label">Ingresar URL</div>
   <div class="url-row">
     <input type="text" id="url-input" placeholder="https://youtube.com/watch?v=..." autocomplete="off" spellcheck="false" />
     <div class="url-spinner" id="url-spinner"></div>
@@ -331,7 +33,7 @@
 
   <div id="status-msg"></div>
 
-  <div class="section-label">Type</div>
+  <div class="section-label">Tipo</div>
   <div class="format-toggle" id="fmt-toggle">
     <button class="fmt-btn active" data-fmt="video" onclick="setMediaType('video')">
       <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="2" y="3" width="15" height="14" rx="2"/><polygon points="17 8 22 12 17 16 17 8"/></svg>
@@ -339,17 +41,17 @@
     </button>
     <button class="fmt-btn" data-fmt="audio" onclick="setMediaType('audio')">
       <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M9 18V5l12-2v13"/><circle cx="6" cy="18" r="3"/><circle cx="18" cy="16" r="3"/></svg>
-      Audio Only
+      Solo Audio
     </button>
   </div>
 
   <div id="format-row">
-    <div class="section-label" id="format-label">Output Format</div>
+    <div class="section-label" id="format-label">Format De Salida</div>
     <div class="format-chips" id="format-chips"></div>
   </div>
 
   <div id="progress-box">
-    <div class="section-label" id="progress-label">Downloading...</div>
+    <div class="section-label" id="progress-label">Descargando...</div>
     <div class="progress-bar-bg">
       <div class="progress-bar-fill" id="progress-fill"></div>
     </div>
@@ -363,232 +65,13 @@
     <div id="download-btn-wrap">
       <a id="dl-link" class="btn btn-accent" href="#">⬇ Save File</a>
     </div>
-    <button class="btn btn-accent" id="start-btn" onclick="startDownload()">Download</button>
+    <button class="btn btn-accent" id="start-btn" onclick="startDownload()">Descargar</button>
   </div>
 
 </div>
 
 <footer>yt-dlp + flask · for personal use only · respect copyright</footer>
 
-<script>
-  let selectedMediaType   = 'video';
-  let selectedOutputFormat = 'mp4';
-  let pollTimer    = null;
-  let debounceTimer = null;
-  let currentFetchController = null;   // lets us abort in-flight /info requests
-
-  let availableFormats = { audio: [], video: [] };
-
-  // -------------------------------------------------------------------------
-  // Helpers to detect a recognisable video URL before bothering the server.
-  // Covers youtube.com/watch, youtu.be, and common short-link patterns.
-  // -------------------------------------------------------------------------
-  const URL_RE = /^https?:\/\/(www\.)?(youtube\.com\/(watch|shorts|live)|youtu\.be|vimeo\.com|dailymotion\.com|twitch\.tv|soundcloud\.com)/i;
-
-  function looksLikeVideoUrl(str) {
-    try { new URL(str); } catch { return false; }
-    return URL_RE.test(str);
-  }
-
-  // -------------------------------------------------------------------------
-  // Format chips
-  // -------------------------------------------------------------------------
-  async function loadFormats() {
-    try {
-      const res = await fetch('/formats');
-      availableFormats = await res.json();
-    } catch {
-      availableFormats = {
-        audio: ['mp3','aac','m4a','opus','flac','wav','vorbis','alac'],
-        video: ['mp4','mkv','webm','mov','avi','flv'],
-      };
-    }
-    renderFormatChips();
-  }
-
-  function setMediaType(type) {
-    selectedMediaType = type;
-    document.querySelectorAll('.fmt-btn').forEach(b => b.classList.toggle('active', b.dataset.fmt === type));
-    renderFormatChips();
-  }
-
-  function renderFormatChips() {
-    const list = selectedMediaType === 'audio' ? availableFormats.audio : availableFormats.video;
-    const def  = list[0] || (selectedMediaType === 'audio' ? 'mp3' : 'mp4');
-    selectedOutputFormat = def;
-    document.getElementById('format-chips').innerHTML = list.map(f =>
-      `<button class="chip${f === def ? ' selected' : ''}" onclick="selectFormat(this,'${f}')">${f}</button>`
-    ).join('');
-  }
-
-  function selectFormat(el, f) {
-    document.querySelectorAll('#format-chips .chip').forEach(c => c.classList.remove('selected'));
-    el.classList.add('selected');
-    selectedOutputFormat = f;
-  }
-
-  // -------------------------------------------------------------------------
-  // UI helpers
-  // -------------------------------------------------------------------------
-  function fmtDuration(s) {
-    if (!s) return '';
-    const h = Math.floor(s/3600), m = Math.floor((s%3600)/60), sec = s%60;
-    return h
-      ? `${h}:${String(m).padStart(2,'0')}:${String(sec).padStart(2,'0')}`
-      : `${m}:${String(sec).padStart(2,'0')}`;
-  }
-
-  function showStatus(msg, type) {
-    const el = document.getElementById('status-msg');
-    el.textContent = msg; el.className = type;
-  }
-
-  function clearStatus() {
-    const el = document.getElementById('status-msg');
-    el.className = ''; el.textContent = '';
-  }
-
-  // -------------------------------------------------------------------------
-  // Auto-fetch video info
-  //
-  // Anti-throttle measures on the frontend side:
-  //  • Only fires when the URL matches a known video pattern — typing a URL
-  //    character by character won't trigger dozens of requests.
-  //  • 1200 ms debounce on typing (much longer than before).
-  //  • 400 ms debounce on paste (user pasted a complete URL, fire faster).
-  //  • Aborts any in-flight request before starting a new one, so rapidly
-  //    changing the URL never queues up multiple simultaneous /info calls.
-  //  • Backend caches results for 10 min, so navigating away and back is free.
-  // -------------------------------------------------------------------------
-  async function fetchInfo() {
-    const url = document.getElementById('url-input').value.trim();
-
-    if (!looksLikeVideoUrl(url)) {
-      document.getElementById('info-box').classList.remove('visible');
-      clearStatus();
-      return;
-    }
-
-    // Abort previous in-flight request
-    if (currentFetchController) currentFetchController.abort();
-    currentFetchController = new AbortController();
-
-    clearStatus();
-    document.getElementById('info-box').classList.remove('visible');
-    document.getElementById('url-spinner').classList.add('active');
-
-    try {
-      const res  = await fetch('/info', {
-        method: 'POST',
-        headers: {'Content-Type':'application/json'},
-        body: JSON.stringify({ url }),
-        signal: currentFetchController.signal,
-      });
-      const data = await res.json();
-
-      if (data.error) { showStatus('⚠ ' + data.error, 'error'); return; }
-
-      document.getElementById('thumb').src         = data.thumbnail || '';
-      document.getElementById('vid-title').textContent = data.title || 'Unknown';
-      document.getElementById('vid-meta').textContent  =
-        [data.uploader, fmtDuration(data.duration)].filter(Boolean).join(' · ');
-      document.getElementById('info-box').classList.add('visible');
-
-    } catch (e) {
-      if (e.name !== 'AbortError') showStatus('⚠ Could not reach server.', 'error');
-    } finally {
-      document.getElementById('url-spinner').classList.remove('active');
-    }
-  }
-
-  // -------------------------------------------------------------------------
-  // Download
-  // -------------------------------------------------------------------------
-  async function startDownload() {
-    const url = document.getElementById('url-input').value.trim();
-    if (!url) { showStatus('⚠ Please enter a URL.', 'error'); return; }
-    clearStatus();
-
-    // Abort any pending info fetch so it doesn't interfere
-    if (currentFetchController) { currentFetchController.abort(); currentFetchController = null; }
-    document.getElementById('url-spinner').classList.remove('active');
-
-    const btn = document.getElementById('start-btn');
-    btn.disabled = true;
-    btn.innerHTML = '<span class="spin"></span> Starting...';
-
-    document.getElementById('download-btn-wrap').style.display = 'none';
-    document.getElementById('progress-box').classList.add('visible');
-    document.getElementById('progress-label').textContent = 'Downloading...';
-    document.getElementById('progress-fill').style.width  = '0%';
-    document.getElementById('prog-pct').textContent        = '0%';
-    document.getElementById('prog-speed').textContent      = '';
-
-    try {
-      const res  = await fetch('/download', {
-        method: 'POST',
-        headers: {'Content-Type':'application/json'},
-        body: JSON.stringify({ url, format: selectedMediaType, chosen_format: selectedOutputFormat }),
-      });
-      const data = await res.json();
-      if (data.error) { showStatus('⚠ ' + data.error, 'error'); resetBtn(); return; }
-      pollStatus(data.job_id);
-    } catch {
-      showStatus('⚠ Server error.', 'error');
-      resetBtn();
-    }
-  }
-
-  function pollStatus(jobId) {
-    if (pollTimer) clearInterval(pollTimer);
-    pollTimer = setInterval(async () => {
-      try {
-        const data = await (await fetch('/status/' + jobId)).json();
-
-        if (data.progress !== undefined) {
-          document.getElementById('progress-fill').style.width = data.progress + '%';
-          document.getElementById('prog-pct').textContent      = data.progress + '%';
-          if (data.speed) document.getElementById('prog-speed').textContent =
-            data.speed + (data.eta ? ' · ETA ' + data.eta : '');
-        }
-
-        if (data.status === 'done') {
-          clearInterval(pollTimer);
-          document.getElementById('progress-label').textContent = 'Complete!';
-          document.getElementById('prog-speed').textContent = '';
-          showStatus('✓ Download ready: ' + (data.title || 'file'), 'success');
-          document.getElementById('dl-link').href = '/file/' + jobId;
-          document.getElementById('dl-link').download = true;
-          document.getElementById('download-btn-wrap').style.display = 'flex';
-          resetBtn();
-        } else if (data.status === 'error') {
-          clearInterval(pollTimer);
-          showStatus('⚠ ' + (data.error || 'Unknown error'), 'error');
-          document.getElementById('progress-box').classList.remove('visible');
-          resetBtn();
-        }
-      } catch { /* ignore transient poll errors */ }
-    }, 800);
-  }
-
-  function resetBtn() {
-    const btn = document.getElementById('start-btn');
-    btn.disabled = false; btn.innerHTML = 'Download';
-  }
-
-  // Typing: long debounce + URL pattern guard = very few actual requests
-  document.getElementById('url-input').addEventListener('input', () => {
-    clearTimeout(debounceTimer);
-    debounceTimer = setTimeout(fetchInfo, 1200);
-  });
-
-  // Paste: user pasted a complete URL, fire faster
-  document.getElementById('url-input').addEventListener('paste', () => {
-    clearTimeout(debounceTimer);
-    debounceTimer = setTimeout(fetchInfo, 400);
-  });
-
-  loadFormats();
-</script>
+<script src="{{ url_for('static', filename='app.js') }}"></script>
 </body>
 </html>