/* ═══════════════════════════════════════════
   CIRCA — Splash (弧形照片墙 · 白底)
═══════════════════════════════════════════ */

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #ffffff;
  color: #111;
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
}

#stage {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  touch-action: none;
  cursor: grab;
}
#stage:active { cursor: grabbing; }

/* ── 顶部品牌 / Info ── */
.overlay-brand {
  position: fixed;
  top: 30px;
  left: 36px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: #111;
  z-index: 10;
  pointer-events: none;
}

.overlay-info {
  position: fixed;
  top: 32px;
  right: 36px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: #111;
  text-decoration: none;
  z-index: 10;
  opacity: 0.75;
  transition: opacity 0.3s;
}
.overlay-info:hover { opacity: 1; }

/* ── 中心文案 + 按钮 ── */
.overlay-center {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  z-index: 10;
  pointer-events: none;
}

.brand-slogan {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.2em;
  color: #6b6b6b;
}

.enter-btn {
  pointer-events: auto;
  padding: 14px 42px;
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #fff;
  background: #111;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
}

.enter-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.25);
}

/* ── 加载动画 ── */
.loader {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #ffffff;
  z-index: 20;
  transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.loader-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #111;
  animation: loaderBounce 1.2s infinite ease-in-out both;
}
.loader-dot:nth-child(1) { animation-delay: -0.32s; }
.loader-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes loaderBounce {
  0%, 80%, 100% { transform: scale(0.3); opacity: 0.35; }
  40%           { transform: scale(1);   opacity: 1; }
}

/* ── Mobile ── */
@media (max-width: 500px) {
  .overlay-brand { top: 20px; left: 20px; font-size: 16px; }
  .overlay-info  { top: 22px; right: 20px; font-size: 11px; }
  .overlay-center { bottom: 44px; gap: 14px; }
  .brand-slogan { font-size: 12px; letter-spacing: 0.15em; }
  .enter-btn { padding: 11px 28px; font-size: 10px; letter-spacing: 0.22em; }
}