/* ==========================================================================
   iComStudio — 动效层（预加载 / 文字逐行 / 图片展开 / 光标 / 页头 / 菜单）
   依赖 style.css 的主题变量
   ========================================================================== */

/* ---- 预加载 ---- */
#preloader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: clamp(20px, 3.5vw, 48px);
  transition: transform 0.9s cubic-bezier(0.77, 0, 0.175, 1);
}
#preloader.done { transform: translateY(-100%); pointer-events: none; }
#preloader .pl-top { display: flex; justify-content: space-between; align-items: baseline; }
#preloader .pl-brand { font-weight: 700; letter-spacing: 0.14em; color: var(--primary); }
#preloader .pl-sound { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-muted); }
#preloader .pl-count {
  font-weight: 700; font-size: clamp(4rem, 20vw, 17rem); line-height: 0.9; letter-spacing: -0.02em;
  color: var(--primary); font-variant-numeric: tabular-nums;
}
#preloader .pl-bottom { display: flex; align-items: center; gap: 20px; }
#preloader .pl-bar { flex: 1; height: 2px; background: var(--border); position: relative; overflow: hidden; }
#preloader .pl-bar i { position: absolute; inset: 0; background: var(--accent); transform: scaleX(0); transform-origin: left; }
#preloader .pl-label { font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-faint); }

/* ---- 文字逐行揭示 ---- */
[data-split] .ms-line { display: block; overflow: hidden; }
[data-split] .ms-line-inner {
  display: inline-block;
  transform: translateY(115%);
  transition: transform 1.05s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
[data-split].is-revealed .ms-line-inner { transform: translateY(0); }
.ms-w { display: inline-block; }

/* ---- 图片展开 ---- */
.img-mask {
  display: block; width: 100%; height: 100%; overflow: hidden; position: relative;
  transform: scale(1.35);
  transition: transform 1.35s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.img-mask::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: var(--surface-2);
  transform: scaleY(1); transform-origin: top;
  transition: transform 1.05s cubic-bezier(0.77, 0, 0.175, 1);
}
.img-mask.is-revealed { transform: scale(1); }
.img-mask.is-revealed::after { transform: scaleY(0); }
.img-mask.img-mask--bleed.is-revealed { transform: scale(1.12); }

/* 图框滚动展伸已移除（本模板不使用 100vw 展伸，避免横向白边） */

/* ---- 自定义光标 ---- */
html.has-cursor, html.has-cursor * { cursor: none !important; }
.cur-dot, .cur-ring { position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none; border-radius: 50%; }
.cur-dot { width: 7px; height: 7px; background: var(--accent); margin: -3.5px 0 0 -3.5px; }
.cur-ring {
  width: 38px; height: 38px; border: 1px solid var(--border-strong); margin: -19px 0 0 -19px;
  transition: width 0.35s ease, height 0.35s ease, margin 0.35s ease, background-color 0.35s ease, border-color 0.35s ease;
}
body.cursor-hover .cur-ring {
  width: 64px; height: 64px; margin: -32px 0 0 -32px;
  background: var(--accent-soft); border-color: var(--accent);
}
@media (hover: none), (pointer: coarse) { .cur-dot, .cur-ring { display: none; } }

/* ---- 全屏菜单级联 ---- */
.menu-overlay__links a {
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.menu-overlay.open .menu-overlay__links a { opacity: 1; transform: translateY(0); }
.menu-overlay.open .menu-overlay__links a:nth-child(1) { transition-delay: 0.10s; }
.menu-overlay.open .menu-overlay__links a:nth-child(2) { transition-delay: 0.16s; }
.menu-overlay.open .menu-overlay__links a:nth-child(3) { transition-delay: 0.22s; }
.menu-overlay.open .menu-overlay__links a:nth-child(4) { transition-delay: 0.28s; }
.menu-overlay.open .menu-overlay__links a:nth-child(5) { transition-delay: 0.34s; }