*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background: #111827;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
}

.editor-window {
  width: 100%;
  max-width: 900px;
  background: #1e293b;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 1px solid #334155;
  display: flex;
  flex-direction: column;
}

.editor-header {
  background: #0f172a;
  padding: 16px 20px;
  border-bottom: 1px solid #334155;
}

.controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-btn {
  background: #334155;
  color: #f8fafc;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.timecode {
  margin-left: auto;
  color: #3b82f6;
  font-family: "Courier New", Courier, monospace;
  font-size: 1.125rem;
  font-weight: bold;
}

.timeline-container {
  display: flex;
  height: 250px;
}

.track-labels {
  width: 60px;
  background: #0f172a;
  border-right: 1px solid #334155;
  display: flex;
  flex-direction: column;
  padding-top: 30px;
}

.track-label {
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #94a3b8;
  font-weight: 600;
  border-bottom: 1px solid #334155;
}

.track-area {
  flex-grow: 1;
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  background: #1e293b;
  padding-top: 30px;
}

.ruler {
  position: absolute;
  top: 0;
  left: 0;
  width: 2000px;
  height: 30px;
  background: #334155;
  border-bottom: 1px solid #0f172a;
}

.playhead {
  position: absolute;
  top: 0;
  left: 0px;
  height: 100%;
  width: 14px;
  z-index: 100;
  transform: translateX(-7px);
  cursor: ew-resize;
}

.playhead-top {
  width: 14px;
  height: 14px;
  background: #ef4444;
  clip-path: polygon(0 0, 100% 0, 100% 50%, 50% 100%, 0 50%);
}

.playhead-line {
  position: absolute;
  top: 14px;
  left: 6px;
  width: 2px;
  height: calc(100% - 14px);
  background: #ef4444;
}

.editor-track {
  position: relative;
  height: 80px;
  width: 2000px;
  border-bottom: 1px solid #334155;
  background: rgba(15, 23, 42, 0.3);
}

.clip {
  position: absolute;
  top: 10px;
  height: 60px;
  border-radius: 6px;
  padding: 8px;
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  overflow: hidden;
  white-space: nowrap;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.video-clip { background: #3b82f6; border: 1px solid #60a5fa; }
.audio-clip { background: #10b981; border: 1px solid #34d399; }

const playhead = document.getElementById("playhead");
const trackArea = document.getElementById("track-area");
const timeDisplay = document.getElementById("time-display");

let isDragging = false;

playhead.addEventListener("pointerdown", function(e) {
  isDragging = true;
  playhead.setPointerCapture(e.pointerId);
});

playhead.addEventListener("pointermove", function(e) {
  if (!isDragging) return;
  
  const rect = trackArea.getBoundingClientRect();
  let x = e.clientX - rect.left + trackArea.scrollLeft;
  
  if (x < 0) x = 0;
  
  playhead.style.left = x + "px";
  
  const totalSeconds = Math.floor(x / 50);
  const minutes = Math.floor(totalSeconds / 60).toString().padStart(2, "0");
  const seconds = (totalSeconds % 60).toString().padStart(2, "0");
  const frames = Math.floor((x % 50) / 1.66).toString().padStart(2, "0");
  
  timeDisplay.innerText = "00:" + minutes + ":" + seconds + ":" + frames;
});

playhead.addEventListener("pointerup", function() {
  isDragging = false;
});