/* ═══════════════════════════════════════════════════════════
   base.css — 全站共用样式（所有页面引入）
   颜色全部由每个页面自己的 :root 调色板变量决定。

   每页需要定义的变量（带 * 的有默认值，可不写）：
   --accent            主强调色
   --accent-hover *    链接 hover 色（默认 = --accent）
   --text              正文颜色
   --muted             次要文字颜色
   --line              描边颜色
   --bg                页面背景色
   --dot               背景点阵颜色（不要点阵就设 transparent）
   --nav-bg            导航栏半透明背景
   --footer-bg         深色页脚背景
   --contact-border *  页脚顶部分隔线（默认白色细线）
   --footer-link-hover * 页脚链接 hover 色（默认 = --accent）
   --footer-icon-color * 页脚 ✦ 颜色（默认继承）
   --cursor-color *    光标圆点颜色（默认 = --accent）
   --cursor-blend *    光标混合模式（默认 multiply；深色页用 screen）
   --cursor-glow *     光标发光（默认无）
   --cursor-hover-bg   光标 hover 大圆填充
   --cursor-hover-border 光标 hover 大圆描边色
   --backtop-bg *      返回顶部按钮背景（默认白）
   --backtop-shadow *  返回顶部按钮投影色（默认 = --line）
   --backtop-hover-color * hover 时文字色（默认白）
   ═══════════════════════════════════════════════════════════ */

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  color: var(--text);
  cursor: none;
  background: radial-gradient(var(--dot) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  background-color: var(--bg);
}

/* ───────── CURSOR ───────── */
.cursor { position: fixed; z-index: 9999; pointer-events: none; transform: translate(-50%,-50%); }
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--cursor-color, var(--accent));
  border-radius: 50%;
  mix-blend-mode: var(--cursor-blend, multiply);
  transition: transform 0.2s;
  box-shadow: var(--cursor-glow, none);
}
.cursor.hovering .cursor-dot {
  transform: scale(5);
  background: var(--cursor-hover-bg);
  border: 0.5px solid var(--cursor-hover-border);
  backdrop-filter: blur(1px);
}
/* PLAY TRAILER 光标标签（页面 cursor div 里放 <div class="cursor-label">…</div> 才会生效） */
.cursor-label {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'VT323', monospace; font-size: 20px; letter-spacing: 1px;
  background: var(--accent); color: white;
  border-radius: 999px; padding: 10px 22px; white-space: nowrap;
  opacity: 0; scale: 0.5;
  transition: opacity 0.25s, scale 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.cursor.play-mode .cursor-dot { transform: scale(0); }
.cursor.play-mode .cursor-label { opacity: 1; scale: 1; }

/* ───────── NAV ───────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 40px;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-logo { display: flex; align-items: center; cursor: none; }
.nav-logo img { height: 40px; width: auto; }
.site-brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none; cursor: none;
  font-family: 'Space Grotesk', sans-serif; font-size: 17px; font-weight: 700;
  font-synthesis: none; line-height: 1; letter-spacing: -0.25px; white-space: nowrap;
}
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
.brand-icon {
  width: 32px; height: 32px; flex: 0 0 32px;
  display: inline-block; border-radius: 6px;
  background: url('../tab.png') center / cover no-repeat;
  transition: transform 0.2s, opacity 0.2s;
}
.site-brand:hover .brand-icon { transform: translateY(-1px); opacity: 0.82; }
.site-brand:hover { color: var(--accent-hover, var(--accent)); }
.nav-back { font-family: 'VT323', monospace; font-size: 19px; color: var(--text); text-decoration: none; cursor: none; letter-spacing: 1px; transition: color 0.2s; }
.nav-back:hover { color: var(--accent-hover, var(--accent)); }
.nav-links { display: flex; gap: 26px; }
.nav-link { font-family: 'VT323', monospace; font-size: 19px; color: var(--text); text-decoration: none; cursor: none; letter-spacing: 1px; transition: color 0.2s; }
.nav-link:hover, .nav-link.active { color: var(--accent-hover, var(--accent)); }

/* ───────── CONTACT BAR ───────── */
.contact-bar {
  background: var(--footer-bg);
  padding: 32px 48px;
  display: flex; justify-content: center; align-items: center; gap: 24px;
  border-top: var(--contact-border, 1px solid rgba(255,255,255,0.1));
  flex-wrap: wrap;
}
.contact-bar-icon { font-size: 18px; opacity: 0.4; color: var(--footer-icon-color, inherit); }
.contact-bar-text { font-family: 'VT323', monospace; font-size: 18px; color: rgba(255,255,255,0.5); letter-spacing: 1px; }
.contact-bar a { font-family: 'VT323', monospace; font-size: 18px; color: rgba(255,255,255,0.72); text-decoration: none; cursor: none; transition: color 0.2s; }
.contact-bar a:hover { color: var(--footer-link-hover, var(--accent)); }
.contact-bar-sep { color: rgba(255,255,255,0.2); font-size: 18px; }

/* ───────── BACK TO TOP ───────── */
.back-top {
  position: fixed; bottom: 26px; right: 26px; z-index: 200;
  width: 50px; height: 50px;
  border: 1.5px solid var(--line); border-radius: 50%;
  background: var(--backtop-bg, white);
  font-family: 'VT323', monospace; font-size: 22px; color: var(--text);
  display: flex; align-items: center; justify-content: center;
  cursor: none;
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: all 0.3s;
  box-shadow: 2px 2px 0 var(--backtop-shadow, var(--line));
}
.back-top.show { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-top:hover { background: var(--accent); color: var(--backtop-hover-color, white); border-color: var(--accent); }

/* ───────── TRAILER 弹层（common.js 动态创建）───────── */
body.trailer-open { overflow: hidden; }
.trailer-modal {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,0.86);
  display: grid; place-items: center;
  padding: 24px;
  animation: trailerFade 0.25s ease;
}
@keyframes trailerFade { from { opacity: 0; } to { opacity: 1; } }
.trailer-frame { position: relative; width: min(1000px, 92vw); }
.trailer-frame iframe {
  width: 100%; aspect-ratio: 16/9;
  border: none; display: block;
  background: #000;
  box-shadow: 0 20px 60px rgba(0,0,0,0.55);
}
.trailer-close {
  position: absolute; right: 0; top: -46px;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5); border-radius: 50%;
  color: #fff; font-size: 16px; line-height: 1;
  cursor: none;
  transition: background 0.2s, border-color 0.2s;
}
.trailer-close:hover { background: var(--accent); border-color: var(--accent); }

/* ───────── MOBILE ───────── */
@media (max-width: 760px) {
  body { cursor: auto; }
  .cursor { display: none; }
  nav { padding: 14px 20px; }
  .nav-links { gap: 14px; }
  .nav-link { font-size: 16px; }
  .site-brand { gap: 8px; font-size: 15px; }
  .brand-icon { width: 28px; height: 28px; flex-basis: 28px; }
  .trailer-close { cursor: pointer; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}