*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --letterbox-bar-height: clamp(86px, 12vh, 124px);
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #f2eee6;
  font-family: 'Inter', sans-serif;
}

#canvas {
  display: block;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

#loading-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #0d2418;
  box-shadow: inset 0 0 0 1px rgba(246, 232, 197, 0.24);
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.75s ease;
}

#loading-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(2, 12, 8, 0.72), rgba(13, 36, 24, 0) 38%, rgba(13, 36, 24, 0) 68%, rgba(246, 232, 197, 0.06));
  pointer-events: none;
}

#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.75s ease, visibility 0s linear 0.75s;
}

.loading-panel {
  position: relative;
  width: min(360px, calc(100vw - 64px));
  display: grid;
  gap: 18px;
  justify-items: center;
  z-index: 1;
}

.loading-title {
  font-family: 'Pinyon Script', 'Great Vibes', 'Brush Script MT', 'Segoe Script', cursive;
  font-size: clamp(2.15rem, 7vw, 4rem);
  font-weight: 400;
  line-height: 1;
  opacity: 1;
  color: #f6e8c5;
  text-shadow: 0 10px 28px rgba(246, 232, 197, 0.08);
  transition: opacity 0.24s ease;
}

.loading-bar {
  width: 100%;
  height: 5px;
  overflow: hidden;
  background: rgba(246, 232, 197, 0.16);
}

#loading-bar-fill {
  width: 0%;
  height: 100%;
  background: #f6e8c5;
  transition: width 0.18s ease;
}

#letterbox-bars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 850;
}

.letterbox-bar {
  position: absolute;
  left: 0;
  width: 100%;
  height: var(--letterbox-bar-height);
  background: #fff;
  box-shadow: 0 0 26px rgba(0,0,0,0.12);
  transition: transform 1.55s cubic-bezier(0.55, 0, 0.1, 1);
  will-change: transform;
}

.letterbox-bar-top {
  top: 0;
  transform: translateY(-100%);
}

.letterbox-bar-bottom {
  bottom: 0;
  transform: translateY(100%);
}

#letterbox-bars.visible .letterbox-bar {
  transform: translateY(0);
}

/* Scroll prompt appears after the bars land */
#scroll-prompt {
  position: fixed;
  bottom: calc((var(--letterbox-bar-height) - 58px) / 2);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  z-index: 900;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.scroll-prompt-hidden {
  opacity: 0;
}

.scroll-prompt-visible {
  opacity: 0.94;
}

.scroll-arrow {
  font-size: 1.6rem;
  color: #111;
  animation: scroll-bounce 1.6s ease-in-out infinite;
}

.scroll-text {
  font-family: 'EB Garamond', serif;
  font-size: 0.95rem;
  font-style: italic;
  color: #111;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

#youtube-layer {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 2;
}

#youtube-layer iframe {
  position: absolute;
  overflow: hidden;
  opacity: 0.95;
}