diff --git a/styles.css b/css/styles.css
similarity index 95%
rename from styles.css
rename to css/styles.css
index 89ad44a..9cddd67 100644
--- a/styles.css
+++ b/css/styles.css
@@ -1,150 +1,150 @@
-body {
-  font-family: sans-serif;
-  text-align: center;
-  background: #2a2a2a;
-  padding: 20px;
-}
-
-h1 {
-  color: #fff;
-}
-
-.controls {
-  margin-bottom: 30px;
-}
-
-.controls label {
-  color: #fff;
-  margin-right: 10px;
-  font-size: 16px;
-}
-
-.controls select {
-  padding: 8px 12px;
-  font-size: 14px;
-  border-radius: 5px;
-  border: none;
-  background: #fff;
-  color: #333;
-  cursor: pointer;
-}
-
-.piano {
-  display: flex;
-  justify-content: center;
-  align-items: flex-end;
-  margin-top: 50px;
-  background: #111;
-  padding: 20px;
-  border-radius: 10px;
-  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
-}
-
-.key {
-  display: flex;
-  align-items: flex-end;
-  justify-content: center;
-  font-size: 14px;
-  cursor: pointer;
-  border: 1px solid #222;
-  border-radius: 5px;
-  user-select: none;
-  transition: all 0.05s;
-  position: relative;
-  min-height: 1em;
-}
-
-/* Sharp keys may show Carnatic swara labels if they correspond to the chosen scale */
-.key.sharp.sa-root {
-  color: #fff;
-  font-size: 14px;
-}
-
-.key.has-label .key-label {
-  position: relative;
-  display: inline-flex;
-}
-
-.key.has-label .key-label sub {
-  font-size: 0.65em;
-  display: inline-block;
-  vertical-align: text-bottom;
-  line-height: 1;
-  position: relative;
-  top: 0.18em;
-}
-
-.key.lower.has-label .key-label::after,
-.key.upper.has-label .key-label::after {
-  position: absolute;
-  content: '•';
-  font-size: 12px;
-  color: currentColor;
-  pointer-events: none;
-  left: 50%;
-  transform: translateX(-50%);
-}
-
-.key.black.has-label .key-label::after {
-  color: #777;
-}
-
-.key.lower.has-label .key-label::after {
-  top: 100%;
-  margin-top: -2px;
-}
-
-.key.upper.has-label .key-label::after {
-  bottom: 100%;
-  margin-bottom: -5px;
-}
-
-/* White keys */
-.key.white {
-  width: 60px;
-  height: 250px;
-  background: linear-gradient(135deg, #fff 0%, #f5f5f5 100%);
-  color: #333;
-  margin: 0 -1px;
-  padding-bottom: 15px;
-  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
-}
-
-.key.white:active {
-  background: linear-gradient(135deg, #e0e0e0 0%, #d5d5d5 100%);
-  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 3px rgba(0, 0, 0, 0.2);
-  transform: translateY(2px);
-}
-
-/* Black keys */
-.key.black {
-  width: 40px;
-  height: 160px;
-  background: linear-gradient(135deg, #222 0%, #111 100%);
-  color: #fff;
-  position: relative;
-  z-index: 10;
-  margin: 0 -20px;
-  padding-top: 10px;
-  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
-  align-self: flex-start;
-}
-
-.key.black:active {
-  background: linear-gradient(135deg, #111 0%, #000 100%);
-  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), inset 0 1px 2px rgba(255, 255, 255, 0.05);
-  transform: translateY(2px);
-}
-
-.key.sa-root.white {
-  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
-}
-
-.key.sa-root.black {
-  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
-}
-
-.key.sa-root:not(.sharp) {
-  color: #d84315;
-  font-weight: 700;
-}
+body {
+  font-family: sans-serif;
+  text-align: center;
+  background: #2a2a2a;
+  padding: 20px;
+}
+
+h1 {
+  color: #fff;
+}
+
+.controls {
+  margin-bottom: 30px;
+}
+
+.controls label {
+  color: #fff;
+  margin-right: 10px;
+  font-size: 16px;
+}
+
+.controls select {
+  padding: 8px 12px;
+  font-size: 14px;
+  border-radius: 5px;
+  border: none;
+  background: #fff;
+  color: #333;
+  cursor: pointer;
+}
+
+.piano {
+  display: flex;
+  justify-content: center;
+  align-items: flex-end;
+  margin-top: 50px;
+  background: #111;
+  padding: 20px;
+  border-radius: 10px;
+  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
+}
+
+.key {
+  display: flex;
+  align-items: flex-end;
+  justify-content: center;
+  font-size: 14px;
+  cursor: pointer;
+  border: 1px solid #222;
+  border-radius: 5px;
+  user-select: none;
+  transition: all 0.05s;
+  position: relative;
+  min-height: 1em;
+}
+
+/* Sharp keys may show Carnatic swara labels if they correspond to the chosen scale */
+.key.sharp.sa-root {
+  color: #fff;
+  font-size: 14px;
+}
+
+.key.has-label .key-label {
+  position: relative;
+  display: inline-flex;
+}
+
+.key.has-label .key-label sub {
+  font-size: 0.65em;
+  display: inline-block;
+  vertical-align: text-bottom;
+  line-height: 1;
+  position: relative;
+  top: 0.18em;
+}
+
+.key.lower.has-label .key-label::after,
+.key.upper.has-label .key-label::after {
+  position: absolute;
+  content: '•';
+  font-size: 12px;
+  color: currentColor;
+  pointer-events: none;
+  left: 50%;
+  transform: translateX(-50%);
+}
+
+.key.black.has-label .key-label::after {
+  color: #777;
+}
+
+.key.lower.has-label .key-label::after {
+  top: 100%;
+  margin-top: -2px;
+}
+
+.key.upper.has-label .key-label::after {
+  bottom: 100%;
+  margin-bottom: -5px;
+}
+
+/* White keys */
+.key.white {
+  width: 60px;
+  height: 250px;
+  background: linear-gradient(135deg, #fff 0%, #f5f5f5 100%);
+  color: #333;
+  margin: 0 -1px;
+  padding-bottom: 15px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
+}
+
+.key.white:active {
+  background: linear-gradient(135deg, #e0e0e0 0%, #d5d5d5 100%);
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 3px rgba(0, 0, 0, 0.2);
+  transform: translateY(2px);
+}
+
+/* Black keys */
+.key.black {
+  width: 40px;
+  height: 160px;
+  background: linear-gradient(135deg, #222 0%, #111 100%);
+  color: #fff;
+  position: relative;
+  z-index: 10;
+  margin: 0 -20px;
+  padding-top: 10px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
+  align-self: flex-start;
+}
+
+.key.black:active {
+  background: linear-gradient(135deg, #111 0%, #000 100%);
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), inset 0 1px 2px rgba(255, 255, 255, 0.05);
+  transform: translateY(2px);
+}
+
+.key.sa-root.white {
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
+}
+
+.key.sa-root.black {
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
+}
+
+.key.sa-root:not(.sharp) {
+  color: #d84315;
+  font-weight: 700;
+}
diff --git a/script.js b/js/script.js
similarity index 96%
rename from script.js
rename to js/script.js
index b223d52..31f0bbf 100644
--- a/script.js
+++ b/js/script.js
@@ -1,193 +1,193 @@
-// Initialize audio context lazily to avoid autoplay restrictions
-let audioCtx;
-
-const NOTE_NAMES = ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"];
-
-const SVARA_NAMES = {
-  full: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
-  short: ["S", "R", "G", "M", "P", "D", "N"],
-  malayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"]
-};
-
-const semitoneMap = {
-  C: 0,
-  "C#": 1,
-  D: 2,
-  "D#": 3,
-  E: 4,
-  F: 5,
-  "F#": 6,
-  G: 7,
-  "G#": 8,
-  A: 9,
-  "A#": 10,
-  B: 11,
-  Ab: 8,
-  Bb: 10
-};
-const ragams = {
-  Bhair: {
-    intervals: [0, 2, 3, 6, 7, 9, 11],
-    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
-    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
-    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
-    variantNumbers: ["", "2", "2", "1", "", "2", "2"]
-  },
-  Kalyani: {
-    intervals: [0, 2, 4, 6, 7, 9, 11],
-    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
-    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
-    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
-    variantNumbers: ["", "2", "3", "2", "", "2", "3"]
-  },
-  Mayamalavagowla: {
-    intervals: [0, 1, 4, 5, 7, 8, 11],
-    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
-    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
-    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
-    variantNumbers: ["", "1", "3", "1", "", "1", "3"]
-  },
-  Mohanam: {
-    intervals: [0, 2, 4, 7, 9],
-    namesFull: ["Sa", "Ri", "Ga", "Pa", "Dha"],
-    namesShort: ["S", "R", "G", "P", "D"],
-    namesMalayalam: ["സ", "രി", "ഗ", "പ", "ധ"],
-    variantNumbers: ["", "2", "3", "", "2"]
-  },
-  Shankarabharanam: {
-    intervals: [0, 2, 4, 5, 7, 9, 11],
-    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
-    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
-    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
-    variantNumbers: ["", "2", "3", "1", "", "2", "3"]
-  }
-};
-const ROOT_OCTAVE = 4;
-const SOUND_OCTAVE_OFFSET = -12;
-
-const svaraNamesSelect = document.getElementById("svaraNames");
-const svaraStyleSelect = document.getElementById("svaraStyle");
-const startingNoteSelect = document.getElementById("startingNote");
-const ragamSelect = document.getElementById("ragamSelect");
-const pianoElement = document.getElementById("piano");
-
-function normalizeSemitone(value) {
-  return ((value % 12) + 12) % 12;
-}
-
-function absFrequency(absSemitone) {
-  const a4Abs = 4 * 12 + semitoneMap.A; // fixed A4 reference for real pitch
-  const soundAbsSemitone = absSemitone + SOUND_OCTAVE_OFFSET;
-  return 440 * Math.pow(2, (soundAbsSemitone - a4Abs) / 12);
-}
-
-function noteNameToAbs(noteName) {
-  return ROOT_OCTAVE * 12 + semitoneMap[noteName];
-}
-
-function getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
-  const diff = normalizeSemitone(absSemitone - startAbs);
-  const intervalIndex = ragam.intervals.indexOf(diff);
-
-  if (intervalIndex === -1) {
-    return "";
-  }
-
-  const baseLabel = svaraNames[intervalIndex];
-  if (svaraStyle === "variant" && ragam.variantNumbers) {
-    const variant = ragam.variantNumbers[intervalIndex];
-    if (variant) {
-      return `${baseLabel}<sup>${variant}</sup>`;
-    }
-  }
-
-  return baseLabel;
-}
-
-function buildKeyHtml(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
-  const noteName = NOTE_NAMES[normalizeSemitone(absSemitone)];
-  const isSharp = noteName.includes("#");
-  const label = getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle);
-  const classes = ["key", isSharp ? "black" : "white"];
-
-  if (absSemitone < startAbs) {
-    classes.push("lower");
-  } else if (absSemitone > startAbs + 11) {
-    classes.push("upper");
-  }
-
-  if (normalizeSemitone(absSemitone - startAbs) === 0) {
-    classes.push("sa-root");
-  }
-
-  if (label) {
-    classes.push("has-label");
-  }
-
-  const content = label ? `<span class="key-label">${label}</span>` : "";
-  return `<div class="${classes.join(" ")}" data-abs="${absSemitone}">${content}</div>`;
-}
-
-function renderKeyboard() {
-  const startNote = startingNoteSelect.value;
-  const svaraNames = SVARA_NAMES[svaraNamesSelect.value] || SVARA_NAMES.full;
-  const svaraStyle = svaraStyleSelect.value;
-  const ragam = ragams[ragamSelect.value];
-  const startAbs = noteNameToAbs(startNote);
-  const lowerPaAbs = startAbs - 5;
-  const upperPaAbs = startAbs + 19;
-  let html = "";
-
-  for (let abs = lowerPaAbs; abs <= upperPaAbs; abs += 1) {
-    html += buildKeyHtml(abs, startAbs, svaraNames, ragam, svaraStyle);
-  }
-
-  pianoElement.innerHTML = html;
-  attachKeyListeners();
-}
-
-function attachKeyListeners() {
-  const keys = pianoElement.querySelectorAll(".key");
-  keys.forEach((key) => {
-    key.addEventListener("click", () => {
-      playNote(parseInt(key.dataset.abs, 10));
-    });
-  });
-}
-
-function ensureAudioContext() {
-  if (!audioCtx) {
-    audioCtx = new (window.AudioContext || window.webkitAudioContext)();
-  }
-  return audioCtx;
-}
-
-async function playNote(absSemitone) {
-  const ctx = ensureAudioContext();
-  if (ctx.state === "suspended") {
-    await ctx.resume();
-  }
-
-  const freq = absFrequency(absSemitone);
-
-  const oscillator = ctx.createOscillator();
-  const gainNode = ctx.createGain();
-
-  oscillator.type = "sine";
-  oscillator.frequency.setValueAtTime(freq, ctx.currentTime);
-
-  oscillator.connect(gainNode);
-  gainNode.connect(ctx.destination);
-
-  gainNode.gain.setValueAtTime(0.2, ctx.currentTime);
-  oscillator.start();
-  oscillator.stop(ctx.currentTime + 0.5);
-}
-
-renderKeyboard();
-svaraNamesSelect.addEventListener("change", renderKeyboard);
-svaraStyleSelect.addEventListener("change", renderKeyboard);
-startingNoteSelect.addEventListener("change", renderKeyboard);
-ragamSelect.addEventListener("change", renderKeyboard);
-
-
+// Initialize audio context lazily to avoid autoplay restrictions
+let audioCtx;
+
+const NOTE_NAMES = ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"];
+
+const SVARA_NAMES = {
+  full: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
+  short: ["S", "R", "G", "M", "P", "D", "N"],
+  malayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"]
+};
+
+const semitoneMap = {
+  C: 0,
+  "C#": 1,
+  D: 2,
+  "D#": 3,
+  E: 4,
+  F: 5,
+  "F#": 6,
+  G: 7,
+  "G#": 8,
+  A: 9,
+  "A#": 10,
+  B: 11,
+  Ab: 8,
+  Bb: 10
+};
+const ragams = {
+  Bhair: {
+    intervals: [0, 2, 3, 6, 7, 9, 11],
+    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
+    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
+    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
+    variantNumbers: ["", "2", "2", "1", "", "2", "2"]
+  },
+  Kalyani: {
+    intervals: [0, 2, 4, 6, 7, 9, 11],
+    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
+    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
+    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
+    variantNumbers: ["", "2", "3", "2", "", "2", "3"]
+  },
+  Mayamalavagowla: {
+    intervals: [0, 1, 4, 5, 7, 8, 11],
+    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
+    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
+    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
+    variantNumbers: ["", "1", "3", "1", "", "1", "3"]
+  },
+  Mohanam: {
+    intervals: [0, 2, 4, 7, 9],
+    namesFull: ["Sa", "Ri", "Ga", "Pa", "Dha"],
+    namesShort: ["S", "R", "G", "P", "D"],
+    namesMalayalam: ["സ", "രി", "ഗ", "പ", "ധ"],
+    variantNumbers: ["", "2", "3", "", "2"]
+  },
+  Shankarabharanam: {
+    intervals: [0, 2, 4, 5, 7, 9, 11],
+    namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
+    namesShort: ["S", "R", "G", "M", "P", "D", "N"],
+    namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
+    variantNumbers: ["", "2", "3", "1", "", "2", "3"]
+  }
+};
+const ROOT_OCTAVE = 4;
+const SOUND_OCTAVE_OFFSET = -12;
+
+const svaraNamesSelect = document.getElementById("svaraNames");
+const svaraStyleSelect = document.getElementById("svaraStyle");
+const startingNoteSelect = document.getElementById("startingNote");
+const ragamSelect = document.getElementById("ragamSelect");
+const pianoElement = document.getElementById("piano");
+
+function normalizeSemitone(value) {
+  return ((value % 12) + 12) % 12;
+}
+
+function absFrequency(absSemitone) {
+  const a4Abs = 4 * 12 + semitoneMap.A; // fixed A4 reference for real pitch
+  const soundAbsSemitone = absSemitone + SOUND_OCTAVE_OFFSET;
+  return 440 * Math.pow(2, (soundAbsSemitone - a4Abs) / 12);
+}
+
+function noteNameToAbs(noteName) {
+  return ROOT_OCTAVE * 12 + semitoneMap[noteName];
+}
+
+function getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
+  const diff = normalizeSemitone(absSemitone - startAbs);
+  const intervalIndex = ragam.intervals.indexOf(diff);
+
+  if (intervalIndex === -1) {
+    return "";
+  }
+
+  const baseLabel = svaraNames[intervalIndex];
+  if (svaraStyle === "variant" && ragam.variantNumbers) {
+    const variant = ragam.variantNumbers[intervalIndex];
+    if (variant) {
+      return `${baseLabel}<sup>${variant}</sup>`;
+    }
+  }
+
+  return baseLabel;
+}
+
+function buildKeyHtml(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
+  const noteName = NOTE_NAMES[normalizeSemitone(absSemitone)];
+  const isSharp = noteName.includes("#");
+  const label = getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle);
+  const classes = ["key", isSharp ? "black" : "white"];
+
+  if (absSemitone < startAbs) {
+    classes.push("lower");
+  } else if (absSemitone > startAbs + 11) {
+    classes.push("upper");
+  }
+
+  if (normalizeSemitone(absSemitone - startAbs) === 0) {
+    classes.push("sa-root");
+  }
+
+  if (label) {
+    classes.push("has-label");
+  }
+
+  const content = label ? `<span class="key-label">${label}</span>` : "";
+  return `<div class="${classes.join(" ")}" data-abs="${absSemitone}">${content}</div>`;
+}
+
+function renderKeyboard() {
+  const startNote = startingNoteSelect.value;
+  const svaraNames = SVARA_NAMES[svaraNamesSelect.value] || SVARA_NAMES.full;
+  const svaraStyle = svaraStyleSelect.value;
+  const ragam = ragams[ragamSelect.value];
+  const startAbs = noteNameToAbs(startNote);
+  const lowerPaAbs = startAbs - 5;
+  const upperPaAbs = startAbs + 19;
+  let html = "";
+
+  for (let abs = lowerPaAbs; abs <= upperPaAbs; abs += 1) {
+    html += buildKeyHtml(abs, startAbs, svaraNames, ragam, svaraStyle);
+  }
+
+  pianoElement.innerHTML = html;
+  attachKeyListeners();
+}
+
+function attachKeyListeners() {
+  const keys = pianoElement.querySelectorAll(".key");
+  keys.forEach((key) => {
+    key.addEventListener("click", () => {
+      playNote(parseInt(key.dataset.abs, 10));
+    });
+  });
+}
+
+function ensureAudioContext() {
+  if (!audioCtx) {
+    audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+  }
+  return audioCtx;
+}
+
+async function playNote(absSemitone) {
+  const ctx = ensureAudioContext();
+  if (ctx.state === "suspended") {
+    await ctx.resume();
+  }
+
+  const freq = absFrequency(absSemitone);
+
+  const oscillator = ctx.createOscillator();
+  const gainNode = ctx.createGain();
+
+  oscillator.type = "sine";
+  oscillator.frequency.setValueAtTime(freq, ctx.currentTime);
+
+  oscillator.connect(gainNode);
+  gainNode.connect(ctx.destination);
+
+  gainNode.gain.setValueAtTime(0.2, ctx.currentTime);
+  oscillator.start();
+  oscillator.stop(ctx.currentTime + 0.5);
+}
+
+renderKeyboard();
+svaraNamesSelect.addEventListener("change", renderKeyboard);
+svaraStyleSelect.addEventListener("change", renderKeyboard);
+startingNoteSelect.addEventListener("change", renderKeyboard);
+ragamSelect.addEventListener("change", renderKeyboard);
+
+