:root {
  --millennium-color: #111;
  --century-color: #333;
  --decade-color: #888;

  --tick-width-millennium: 3px;
  --tick-width-century: 2px;
  --tick-width-decade: 1px;

  --entry-line-height: 4px;
  --entry-icon-size: 32px;

  --label-color: #444;
  --label-bg: rgba(255, 255, 255, 0.8);
  --label-shadow: rgba(0, 0, 0, 0.1);

  --jade: #006a4e;
  --jade-dark: #004d38;
  --cream: #f3f0e6;
  --paper: #fdfdf9;
  --font-serif: 'Baskerville', serif;
}

/* === Timeline Layout === */
body {
  margin: 0;
  background-color: var(--cream);
  font-family: var(--font-serif);
  overflow: hidden; /* prevents scrollbars */
}

#timeline-section {
  position: relative;
  width: 100vw;
  height: 80vh;
  background-color: var(--paper);
  border-top: 100px solid var(--jade);
  border-bottom: 4px solid var(--jade-dark);
  overflow: hidden;
  touch-action: none;
  user-select: none;
}

#timeline-section.dragging {
  cursor: grabbing;
}

/* === Moving Canvas Container === */
#timeline-inner {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  will-change: transform;
  transform: translateX(0); /* updated dynamically by JS */
  transition: transform 0.1s ease-out;
}

/* === Canvas Background === */
#timeline-canvas {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100vw;
  z-index: 1;
  pointer-events: none;
}

/* === Year Labels === */
.year-label {
  position: absolute;
  top: 85px;
  left: 0;
  transform: translateX(-50%);
  font-size: 0.85rem;
  color: var(--label-color);
  background-color: var(--label-bg);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  box-shadow: 0 1px 2px var(--label-shadow);
  font-family: var(--font-serif);
  z-index: 3;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}

/* === Banner === */
#banner-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 150px;
  pointer-events: none;
  z-index: 0;
}

#banner {
  position: absolute;
  top: 0;
  left: 0;
  height: 500px;
  transform-origin: center center;
  transform: translateX(0) scale(1);
  transition: transform 0.2s ease;
  pointer-events: none;
}

/* === Entries Container === */
#entries-container {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 100%;
  width: auto;
  z-index: 4;
}

/* === Entry Bar === */
.entry-line {
  position: absolute;
  bottom: 40px;
  height: var(--entry-line-height);
  background-color: var(--jade-dark);
  border-radius: 2px;
  left: 0;
  z-index: 4;
}

/* === Entry Icon === */
.entry-icon {
  position: absolute;
  bottom: 44px;
  width: var(--entry-icon-size);
  height: var(--entry-icon-size);
  border-radius: 50%;
  background-color: white;
  border: 2px solid var(--jade);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transform: translateX(-50%);
  z-index: 5;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  pointer-events: auto;
}

.entry-icon:hover {
  transform: translateX(-50%) scale(1.1);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

/* === Fade Effects === */
.timeline-fade {
  position: absolute;
  top: 0;
  width: 100px;
  height: 100%;
  z-index: 10;
  pointer-events: none;
}

#fade-left {
  left: 0;
  background: linear-gradient(to right, var(--cream), transparent);
}

#fade-right {
  right: 0;
  background: linear-gradient(to left, var(--cream), transparent);
}

/* === Tick Line Classes (Optional for non-canvas ticks) === */
.tick-millennium {
  background-color: var(--millennium-color);
  width: var(--tick-width-millennium);
  height: 70px;
  top: 10px;
  position: absolute;
}
.tick-century {
  background-color: var(--century-color);
  width: var(--tick-width-century);
  height: 60px;
  top: 15px;
  position: absolute;
}
.tick-decade {
  background-color: var(--decade-color);
  width: var(--tick-width-decade);
  height: 40px;
  top: 20px;
  position: absolute;
}

/* === Ambient Glow === */
#timeline-section::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  background-image: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.02));
  z-index: 20;
}