/* =============================================================================
   app.css —— 《星轨邮差》样式
   -----------------------------------------------------------------------------
   两条纪律：

   ① **首帧不许白屏**：html/body/#world 的背景在 CSS 里就写成中间调的藕荷色
      （--mauve）。就算 WebGL 还没起来、JS 还没跑完，屏幕上也是一片中间调，
      不是白。这也是「首帧」取证能通过的前提。

   ② **页面是半透明的**：页面根节点不铺满不透明底，内容坐在 rgba(36,30,40,.55)
      的墨色面板上。于是星云在所有页面之下持续可见 —— 「跨页面持续存在的那一层」
      在视觉上是真的，而不是一句声明。

   颜色全部取自 CSS 变量，变量在 9-boot.js 里由 LOOM.PAL 写入 —— 世界层与 UI
   层用的是同一份数字，不会漂移。
   ========================================================================== */
:root {
  /* 兜底值必须与 LOOM.PAL 一致（boot 会覆盖，但首帧用的是这里） */
  --ink: #241E28; --deep: #4A3E4A; --mid: #6B5A63; --mauve: #8A7382;
  --haze: #A2919C; --dust: #7E6A76; --hi: #F2EAF0;
  --lime: #B8F24A; --cyan: #46E0D6; --verm: #FF5533;
  --f11: 11px; --f12: 12px; --f14: 14px; --f17: 17px; --f22: 22px; --f30: 30px;
  --pad: 20px; --r-panel: 14px; --r-card: 10px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
  margin: 0; padding: 0; height: 100%; overflow: hidden;
  background: var(--mauve);
  color: var(--hi);
  font: 400 var(--f14)/1.55 -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  letter-spacing: .01em;
  user-select: none; -webkit-user-select: none;
  touch-action: none;
}
body { position: fixed; inset: 0; }
#world { position: fixed; inset: 0; z-index: 0; background: var(--mauve); }
/* 画布自己也铺上中间调底色：WebGL 在画第一帧之前，合成器会把它当不透明黑 */
#world canvas { display: block; width: 100%; height: 100%; background: var(--mauve); }
#wipe { position: fixed; inset: 0; z-index: 3; pointer-events: none; }

/* ---------------- 页面 ---------------- */
#pages { position: fixed; inset: 0; z-index: 5; }
.page {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  padding: calc(env(safe-area-inset-top, 0px) + 16px) var(--pad) calc(env(safe-area-inset-bottom, 0px) + 16px);
  pointer-events: none; opacity: 0;
  will-change: transform, opacity, clip-path;
}
.page.live { pointer-events: auto; }
.page.col { overflow: hidden; }
.scroll { overflow-y: auto; overflow-x: hidden; -webkit-overflow-scrolling: touch; touch-action: pan-y; flex: 1 1 auto; min-height: 0; }
.scroll::-webkit-scrollbar { width: 0; }

.panel {
  background: rgba(36, 30, 40, .70);
  border: 1px solid rgba(242, 234, 240, .13);
  border-radius: var(--r-panel);
  padding: 14px 16px;
}
.panel + .panel { margin-top: 10px; }
.panel.tight { padding: 10px 12px; }
.row { display: flex; align-items: center; gap: 10px; }
.row.between { justify-content: space-between; }
.col2 { display: flex; flex-direction: column; gap: 6px; }
.grow { flex: 1 1 auto; min-width: 0; }
.mono { font-variant-numeric: tabular-nums; }

.label { font-size: var(--f11); letter-spacing: .16em; color: rgba(242, 234, 240, .58); text-transform: uppercase; }
.sub { font-size: var(--f12); color: rgba(242, 234, 240, .68); }
.hi { color: var(--hi); }
.lime { color: var(--lime); }
.cyan { color: var(--cyan); }
.verm { color: var(--verm); }
.big { font-size: var(--f22); }
.gap4 { height: 4px; } .gap8 { height: 8px; } .gap12 { height: 12px; } .gap20 { height: 20px; }
.spacer { flex: 1 1 auto; }

canvas.gly { display: block; }

/* ---------------- 按钮 ---------------- */
.btn {
  position: relative; border: 1px solid rgba(242, 234, 240, .22);
  background: rgba(74, 62, 74, .42); color: var(--hi);
  border-radius: 999px; padding: 10px 18px;
  font: inherit; font-size: var(--f14); letter-spacing: .06em;
  cursor: pointer; overflow: hidden; transition: none;
  will-change: transform, opacity;
}
.btn.primary {
  border-color: var(--lime); color: var(--ink);
  background: var(--lime);
  padding: 15px 26px; font-size: var(--f17); font-weight: 600; letter-spacing: .14em;
  box-shadow: 0 0 0 0 rgba(184, 242, 74, .0);
}
.btn.ghost { background: transparent; border-color: rgba(242, 234, 240, .18); }
.btn.wide { width: 100%; text-align: center; }
/* 主按钮内部那道 3° 斜向流光：不改变按钮形状，只做一个扫过的高光 */
.btn .shine {
  position: absolute; top: -40%; left: -30%; width: 34%; height: 180%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, .55) 50%, rgba(255, 255, 255, 0) 100%);
  transform: rotate(3deg) translateX(0);
  opacity: 0; pointer-events: none;
}
.btn.primary .shine { opacity: 1; }
.btn:disabled { opacity: .4; }
.tag {
  font-size: var(--f11); letter-spacing: .1em; padding: 3px 9px; border-radius: 999px;
  border: 1px solid rgba(242, 234, 240, .22); color: rgba(242, 234, 240, .8);
}
.tag.lime { border-color: var(--lime); color: var(--lime); }
.tag.cyan { border-color: var(--cyan); color: var(--cyan); }
.tag.verm { border-color: var(--verm); color: var(--verm); }

/* ---------------- 首屏（启航） ---------------- */
#pg-boot { justify-content: flex-end; }
#pg-boot .wordmark { font-size: var(--f30); letter-spacing: .38em; font-weight: 300; }
#boot-meta { font-size: var(--f12); color: rgba(242, 234, 240, .72); }
#boot-bar { height: 2px; background: rgba(242, 234, 240, .14); border-radius: 2px; overflow: hidden; }
#boot-bar i { display: block; height: 100%; width: 0%; background: var(--lime); }
#boot-kv { display: flex; gap: 14px; font-size: var(--f11); color: rgba(242, 234, 240, .5); }
#boot-tip { font-size: var(--f12); color: rgba(242, 234, 240, .62); min-height: 1.5em; }

/* ---------------- 调度台 ---------------- */
#pg-desk .mark-slot { height: 96px; }
#desk-title { font-size: var(--f30); letter-spacing: .3em; font-weight: 300; }
#desk-sub { font-size: var(--f12); color: rgba(242, 234, 240, .66); letter-spacing: .08em; }
.hero { display: flex; gap: 12px; align-items: flex-end; }
.hero .k { font-size: var(--f11); letter-spacing: .14em; color: rgba(242, 234, 240, .55); margin-bottom: 4px; }
.tierstrip { position: relative; height: 46px; margin: 6px 2px 0; }
.tierstrip .rail { position: absolute; left: 6px; right: 6px; top: 20px; height: 1px; background: rgba(242, 234, 240, .18); }
.tierstrip .fill { position: absolute; left: 6px; top: 20px; height: 1px; background: var(--lime); box-shadow: 0 0 6px rgba(184, 242, 74, .8); }
.tierstrip .node { position: absolute; top: 14px; width: 13px; height: 13px; margin-left: -6.5px; border-radius: 50%; border: 1px solid rgba(242, 234, 240, .35); background: var(--ink); }
.tierstrip .node.on { border-color: var(--lime); background: var(--lime); }
.tierstrip .node.cur { box-shadow: 0 0 0 4px rgba(184, 242, 74, .18); }
.tierstrip .tl { position: absolute; top: 30px; font-size: 9px; letter-spacing: .06em; color: rgba(242, 234, 240, .5); transform: translateX(-50%); white-space: nowrap; }
.tierstrip .pulse { position: absolute; top: 18px; width: 5px; height: 5px; margin-left: -2.5px; border-radius: 50%; background: var(--hi); }

.upg { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-top: 1px solid rgba(242, 234, 240, .08); }
.upg:first-child { border-top: 0; }
.upg .nm { width: 74px; font-size: var(--f12); }
.upg .pips { display: flex; gap: 3px; }
.upg .pip { width: 14px; height: 5px; border-radius: 2px; background: rgba(242, 234, 240, .16); }
.upg .pip.on { background: var(--lime); }
.upg .cost { font-size: var(--f12); color: rgba(242, 234, 240, .7); }
.upg.max .cost { color: var(--lime); }

.navbar { display: flex; gap: 8px; }
.navbar .btn { flex: 1 1 0; padding: 11px 0; font-size: var(--f12); letter-spacing: .12em; }

/* ---------------- 手册 ---------------- */
/* 手册与航行志是长文字页，正文直接坐在世界上。世界层（尤其是调度台演示航线的
   亮绿丝线）会从半透明处透上来抢对比度 —— 所以这两页铺一层自上而下的墨色罩：
   顶部最重（文字都在那里），越往下越薄，底部仍然看得见星云。 */
#pg-brief, #pg-ledger {
  background: linear-gradient(180deg, rgba(36, 30, 40, .70) 0%, rgba(36, 30, 40, .46) 58%, rgba(36, 30, 40, .10) 100%);
}
#pg-brief { padding-top: calc(env(safe-area-inset-top, 0px) + 10px); }
.chapter { display: flex; gap: 12px; align-items: flex-start; padding: 11px 0; border-top: 1px solid rgba(242, 234, 240, .09); }
.chapter:first-child { border-top: 0; }
.chapter .idx { font-size: var(--f11); color: rgba(242, 234, 240, .5); padding-top: 3px; width: 18px; }
.chapter .ttl { font-size: var(--f14); }
.chapter .tx { font-size: var(--f12); color: rgba(242, 234, 240, .72); margin-top: 3px; }
.chapter canvas { border-radius: var(--r-card); background: rgba(36, 30, 40, .5); display: block; }
.chapter .demo { margin-top: 9px; }
.chapter.on .ttl { color: var(--lime); }
.rule { display: flex; gap: 8px; font-size: var(--f12); color: rgba(242, 234, 240, .74); padding: 4px 0; }
.rule b { color: var(--hi); font-weight: 500; }
.tbl { width: 100%; font-size: var(--f12); border-collapse: collapse; }
.tbl td { padding: 4px 0; border-top: 1px solid rgba(242, 234, 240, .08); }
.tbl tr:first-child td { border-top: 0; }
.tbl td:last-child { text-align: right; color: var(--hi); }

/* ---------------- 出航 HUD ---------------- */
#pg-flight { justify-content: space-between; }
#hud-top { display: flex; gap: 10px; align-items: flex-start; }
#hud-top .box { background: rgba(36, 30, 40, .62); border: 1px solid rgba(242, 234, 240, .12); border-radius: var(--r-card); padding: 8px 12px; }
#hud-chain { position: relative; background: rgba(36, 30, 40, .62); border: 1px solid rgba(242, 234, 240, .12); border-radius: var(--r-card); padding: 8px 12px; }
#chain-pips { display: flex; gap: 3px; margin-top: 5px; }
#chain-pips i { width: 9px; height: 3px; border-radius: 2px; background: rgba(242, 234, 240, .2); }
#chain-pips i.on { background: var(--lime); }
#hud-time { flex: 1 1 auto; height: 46px; position: relative; }
#time-bar { position: absolute; left: 0; right: 0; top: 27px; height: 3px; background: rgba(242, 234, 240, .16); border-radius: 3px; overflow: hidden; }
#time-bar i { position: absolute; inset: 0; background: var(--hi); transform-origin: left center; }
#time-mark { position: absolute; top: 21px; width: 2px; height: 15px; background: var(--lime); box-shadow: 0 0 7px var(--lime); }
#hud-bottom { display: flex; gap: 10px; align-items: flex-end; }
#hud-legend {
  display: flex; flex-direction: column; gap: 3px; font-size: var(--f11);
  color: rgba(242, 234, 240, .68);
  background: rgba(36, 30, 40, .62); border: 1px solid rgba(242, 234, 240, .12);
  border-radius: var(--r-card); padding: 8px 10px;
}
#hud-legend .d { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 5px; vertical-align: middle; }
#fuel-rail { width: 4px; border-radius: 3px; background: rgba(242, 234, 240, .16); height: 62px; position: relative; overflow: hidden; }
#fuel-rail i { position: absolute; left: 0; right: 0; bottom: 0; height: 100%; background: var(--lime); transform-origin: bottom center; }
#fuel-rail.low i { background: var(--verm); }
#chain-big { position: relative; }

/* ---------------- 航行志 ---------------- */
.rec { display: flex; gap: 12px; padding: 10px 0; border-top: 1px solid rgba(242, 234, 240, .09); align-items: center; }
.rec:first-child { border-top: 0; }
.rec .thumb { width: 76px; height: 54px; border-radius: 8px; background: rgba(36, 30, 40, .6); }
.rec .sc { font-size: var(--f17); }
.rec .mt { font-size: var(--f11); color: rgba(242, 234, 240, .6); }
.rec .exp { margin-top: 8px; padding-top: 8px; border-top: 1px dashed rgba(242, 234, 240, .14); }
.empty { font-size: var(--f12); color: rgba(242, 234, 240, .55); text-align: center; padding: 26px 0; }

/* ---------------- 浮层 ---------------- */
#overlays { position: fixed; inset: 0; z-index: 8; pointer-events: none; }
.ov { position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center; pointer-events: none; opacity: 0; }
.ov.on { pointer-events: auto; }
.ov .veil { position: absolute; inset: 0; background: rgba(36, 30, 40, .42); opacity: 0; }
.ov .sheet {
  position: relative; width: 100%; max-width: 520px; margin: 0 auto;
  padding: 20px var(--pad) calc(env(safe-area-inset-bottom, 0px) + 20px);
  background: linear-gradient(180deg, rgba(36, 30, 40, .55) 0%, rgba(36, 30, 40, .88) 34%, rgba(36, 30, 40, .95) 100%);
  border-top: 1px solid rgba(242, 234, 240, .16);
  border-radius: 18px 18px 0 0;
  will-change: transform, opacity;
}
.ov .sheet .grip { width: 34px; height: 3px; border-radius: 3px; background: rgba(242, 234, 240, .28); margin: 0 auto 14px; }
.ov.mid { align-items: center; }
.ov.mid .sheet { border-radius: 18px; margin: 0 var(--pad); border: 1px solid rgba(242, 234, 240, .16); }
.cards { display: flex; flex-direction: column; gap: 10px; }
.card {
  display: flex; gap: 12px; align-items: flex-start;
  background: rgba(74, 62, 74, .42); border: 1px solid rgba(242, 234, 240, .16);
  border-radius: var(--r-card); padding: 12px; cursor: pointer;
  will-change: transform, opacity;
}
.card.picked { border-color: var(--lime); background: rgba(184, 242, 74, .12); }
.card .motif { width: 44px; height: 44px; border-radius: 8px; background: rgba(36, 30, 40, .5); flex: 0 0 auto; }
.card .nm { font-size: var(--f14); }
.card .ds { font-size: var(--f12); color: rgba(242, 234, 240, .72); margin-top: 2px; }
.kv { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; border-top: 1px solid rgba(242, 234, 240, .08); }
.kv:first-child { border-top: 0; }
.kv .k { font-size: var(--f12); color: rgba(242, 234, 240, .64); }
.seg { display: flex; border: 1px solid rgba(242, 234, 240, .18); border-radius: 999px; overflow: hidden; }
.seg button { border: 0; background: transparent; color: rgba(242, 234, 240, .74); font: inherit; font-size: var(--f12); padding: 7px 14px; cursor: pointer; }
.seg button.on { background: var(--lime); color: var(--ink); }
#fps-read { font-size: var(--f11); color: rgba(242, 234, 240, .6); }

/* ---------------- 提示（队列，不夺焦） ---------------- */
#hint {
  position: fixed; z-index: 9; left: 50%; top: 12px;
  transform: translateX(-50%);
  max-width: min(92vw, 460px);
  padding: 8px 14px; border-radius: 999px;
  background: rgba(36, 30, 40, .82); border: 1px solid rgba(242, 234, 240, .18);
  font-size: var(--f12); color: var(--hi); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  pointer-events: none; opacity: 0;
  will-change: transform, opacity;
}
#hint.warn { border-color: var(--verm); }
#hint.good { border-color: var(--lime); }

/* ---------------- 广告位与自检面板 ---------------- */
.adslot { margin-top: 10px; }
.adrow {
  display: flex; gap: 12px; align-items: center;
  background: rgba(74, 62, 74, .38);
  border: 1px solid rgba(242, 234, 240, .14);
  border-radius: var(--r-card); padding: 10px 12px;
}
.adrow .nm { font-size: var(--f14); }
.adrow .btn.adgo { padding: 8px 16px; font-size: var(--f12); letter-spacing: .1em; flex: 0 0 auto; }
.ad-demo-tag {
  display: inline-block; color: var(--verm); border: 1px solid var(--verm);
  border-radius: 999px; padding: 4px 12px; font-size: var(--f12); letter-spacing: .14em;
}
.ad-bar { height: 4px; background: rgba(242, 234, 240, .16); border-radius: 4px; overflow: hidden; }
.ad-bar i { display: block; height: 100%; width: 100%; background: var(--verm); transform-origin: left center; transform: scaleX(0); }
#ad-panel .kv { padding: 5px 0; }
#ad-panel .kv .mono { text-align: right; max-width: 64%; word-break: break-all; }

/* 低档：关掉一切纯装饰的 CSS 效果（真正的画质变化在 WebGL 那边） */
body.q-low .tierstrip .fill { box-shadow: none; }
body.q-low .btn.primary { box-shadow: none; }