/* ==========================================================================
   base.css — 设计令牌 / 重置 / 背景 / HUD / 加载界面 / 通用组件
   ========================================================================== */

:root {
  /* 色板：暗夜档案 + 鎏金 */
  --bg-0: #05070f;
  --bg-1: #0a0f1e;
  --bg-2: #111a30;
  --ink: #eef2ff;
  --ink-dim: #9fb0d4;
  --ink-faint: #6b7ca0;
  --gold: #e8c979;
  --gold-deep: #a3823c;
  --line: rgba(140, 170, 230, 0.18);
  --line-strong: rgba(160, 195, 255, 0.36);
  --panel: rgba(9, 14, 28, 0.88);
  --accent: #6fe3e1;
  --accent-soft: rgba(111, 227, 225, 0.16);

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;

  --font-ui: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Cinzel", "Songti SC", "STZhongsong", "Times New Roman", serif;
  --font-mono: "Cascadia Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --shadow-1: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 26px 70px rgba(0, 0, 0, 0.6);

  --t-fast: 140ms;
  --t-mid: 260ms;
  --t-slow: 460ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.3; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, video { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

kbd {
  font-family: var(--font-mono);
  font-size: 0.76em;
  padding: 1px 5px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
}

::selection { background: var(--gold); color: #10131d; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 滚动条 */
* { scrollbar-width: thin; scrollbar-color: rgba(150, 180, 240, 0.35) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: linear-gradient(rgba(160, 195, 255, 0.34), rgba(160, 195, 255, 0.14));
  border-radius: 99px;
  border: 3px solid transparent;
  background-clip: content-box;
}

/* ============================ 背景层 ============================ */

.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }

.bg__glow {
  position: absolute; inset: -20%;
  background:
    radial-gradient(46% 40% at 22% 18%, rgba(60, 120, 220, 0.26), transparent 70%),
    radial-gradient(40% 36% at 82% 26%, rgba(180, 90, 220, 0.18), transparent 72%),
    radial-gradient(52% 46% at 50% 104%, rgba(232, 201, 121, 0.16), transparent 68%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0) 72%);
}

.bg__grid {
  position: absolute; inset: -10%;
  background-image:
    linear-gradient(rgba(120, 160, 230, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 230, 0.07) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(72% 62% at 50% 42%, #000 20%, transparent 82%);
  -webkit-mask-image: radial-gradient(72% 62% at 50% 42%, #000 20%, transparent 82%);
  transform: perspective(760px) rotateX(58deg) translateZ(-40px);
  transform-origin: 50% 100%;
  animation: gridDrift 26s linear infinite;
}

@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 0 62px, 62px 0; }
}

#stars { position: absolute; inset: 0; width: 100%; height: 100%; }

.bg__vignette {
  position: absolute; inset: 0;
  background: radial-gradient(120% 96% at 50% 44%, transparent 46%, rgba(2, 4, 10, 0.86) 100%);
}

.bg__scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px);
  mix-blend-mode: overlay;
  opacity: 0.55;
}

/* ============================ HUD 边框 ============================ */

.hud { position: fixed; inset: 0; z-index: 6; pointer-events: none; }

.hud__corner {
  position: absolute; width: 34px; height: 34px;
  border: 2px solid var(--gold);
  opacity: 0.5;
}
.hud__corner--tl { top: 14px; left: 14px; border-right: 0; border-bottom: 0; }
.hud__corner--tr { top: 14px; right: 14px; border-left: 0; border-bottom: 0; }
.hud__corner--bl { bottom: 14px; left: 14px; border-right: 0; border-top: 0; }
.hud__corner--br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; }

.hud__ruler {
  position: absolute; left: 12%; right: 12%; height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 12px);
  opacity: 0.5;
}
.hud__ruler--top { top: 26px; }
.hud__ruler--bottom { bottom: 26px; }

/* ============================ 加载界面 ============================ */

/* 默认隐藏：只有 JS 真正跑起来（html.js）才显示开门动画。
   即使动画完全不执行，也有一条 3 秒的保命动画把加载页收掉（见下方 bootFailsafe）。 */
.boot {
  position: fixed; inset: 0; z-index: 40;
  display: none;
  place-content: center; justify-items: center; gap: var(--sp-3);
  background: radial-gradient(60% 50% at 50% 46%, #0b1226, #04060d 78%);
}
html.js:not(.noanim) .boot { display: grid; }

/* 正常淡出 + 保命淡出：两者都是动画，动画的优先级高于普通 !important，
   所以不依赖任何 JS 定时器也能保证 3 秒内必定收掉加载页。 */
html.js:not(.noanim) body[data-state="ready"] .boot {
  animation: bootOut 620ms var(--ease) forwards;
}
html.js:not(.noanim) .boot {
  animation: bootFailsafe 1ms linear 3s forwards;
}

@keyframes bootOut {
  0%, 26% { opacity: 1; }
  99% { opacity: 0; visibility: hidden; }
  100% { opacity: 0; visibility: hidden; }
}

@keyframes bootFailsafe {
  to { opacity: 0; visibility: hidden; }
}

.boot__sigil { width: 132px; height: 132px; }
.boot__sigil svg { width: 100%; height: 100%; }
.boot__sigil circle { fill: none; stroke: var(--gold); stroke-width: 1; opacity: 0.55; }
.boot__sigil path { fill: none; stroke: var(--gold); stroke-width: 0.6; opacity: 0.4; }
.boot__sigil .boot__core { fill: var(--accent); stroke: none; opacity: 0.9; }
.boot__sigil svg { animation: spin 18s linear infinite; }
.boot__sigil .boot__core { animation: pulse 1.6s ease-in-out infinite; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.25; transform: scale(0.7); } }

.boot__title {
  font-family: var(--font-display);
  letter-spacing: 0.42em; text-indent: 0.42em;
  color: var(--gold); font-size: 15px;
}
.boot__log { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); letter-spacing: 0.08em; }
.boot__bar {
  width: min(280px, 60vw); height: 3px; border-radius: 99px;
  background: rgba(255, 255, 255, 0.08); overflow: hidden;
}
.boot__bar i {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transition: width var(--t-mid) var(--ease);
}

/* ============================ 通用组件 ============================ */

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 99px;
  background: rgba(10, 16, 32, 0.6);
  white-space: nowrap;
}
.chip b { color: var(--gold); font-weight: 600; }
.chip--quiet { border-style: dashed; opacity: 0.75; }
.chip--live i {
  width: 6px; height: 6px; border-radius: 50%;
  background: #57e39b; box-shadow: 0 0 10px #57e39b;
  animation: pulse 2s ease-in-out infinite;
}
.chip--btn { cursor: pointer; transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast); }
.chip--btn:hover { color: var(--ink); border-color: var(--line-strong); background: rgba(30, 44, 78, 0.7); }
.chip--btn[aria-pressed="true"] b { color: #57e39b; }

/* 彩蛋徽章（公会等级 LV.999）：紫色呼应「量子 · 银狼」，
   也让它在一排金色 chip 里显得有那么点可疑。悬停有台词，点击弹隐藏提示。 */
.chip--egg { border-color: rgba(160, 107, 255, 0.42); }
.chip--egg b { color: #c9a6ff; text-shadow: 0 0 12px rgba(160, 107, 255, 0.45); }
.chip--egg:hover {
  color: var(--ink);
  border-color: rgba(160, 107, 255, 0.85);
  background: rgba(48, 26, 84, 0.55);
  box-shadow: 0 0 18px rgba(160, 107, 255, 0.22);
}
.chip--egg:focus-visible { outline: 2px solid #a06bff; outline-offset: 2px; }

/* 点击彩蛋后浮出来的提示条 */
.eggnotice {
  position: fixed; left: 50%; bottom: clamp(18px, 5vh, 44px);
  z-index: 60;
  max-width: min(560px, 88vw);
  display: grid; gap: 4px;
  padding: 12px 16px;
  border: 1px solid rgba(160, 107, 255, 0.5);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(26, 15, 48, 0.95), rgba(9, 7, 20, 0.97));
  box-shadow: var(--shadow-1), 0 0 26px rgba(160, 107, 255, 0.16);
  color: var(--ink);
  text-align: left;
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease), visibility var(--t-mid);
}
.eggnotice.is-open { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.eggnotice__tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.22em;
  color: #c9a6ff;
}
.eggnotice__text { font-size: 13px; line-height: 1.7; }
/* 打开时轻轻抖一下，像信号被篡改 */
.eggnotice.is-open .eggnotice__tag { animation: eggGlitch 900ms steps(2, end) 1; }

@keyframes eggGlitch {
  0%   { opacity: 0.25; transform: translateX(-3px); }
  20%  { opacity: 1;    transform: translateX(2px); }
  40%  { opacity: 0.4;  transform: translateX(-1px); }
  100% { opacity: 1;    transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .eggnotice { transition: none; }
  .eggnotice.is-open .eggnotice__tag { animation: none; }
}

.iconbtn {
  width: 34px; height: 34px; flex: 0 0 auto;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink-dim);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.iconbtn:hover { color: var(--ink); border-color: var(--accent); background: var(--accent-soft); }
.iconbtn:active { transform: translateY(1px); }
.iconbtn--close:hover { color: #ff9d9d; border-color: rgba(255, 120, 120, 0.6); background: rgba(255, 90, 90, 0.14); }

/* 场景容器
   内容永远默认可见（opacity:1）—— 任何环境、任何浏览器都至少能看到大厅骨架。
   入场效果靠「动画 from 帧 + forwards」，最坏情况就是没有动画，而不是看不到内容。 */
.stage {
  position: relative; z-index: 5;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: var(--sp-4);
  padding: clamp(34px, 4.4vw, 62px) clamp(18px, 4vw, 58px) clamp(30px, 3.6vw, 50px);
}
html.js:not(.noanim) body[data-state="ready"] .stage {
  animation:
    stageIn 460ms 120ms var(--ease) forwards,
    stageLift 460ms 120ms var(--ease) forwards;
}

@keyframes stageIn { from { opacity: 0.35; } to { opacity: 1; } }
@keyframes stageLift { from { transform: translateY(8px); } to { transform: none; } }

.hudbar { display: flex; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap; }
.hudbar__side { display: flex; gap: var(--sp-2); flex-wrap: wrap; align-items: center; }
.hudbar__side--right { justify-content: flex-end; }

/* 顶部标题区 */
.hero { text-align: center; display: grid; gap: var(--sp-2); justify-items: center; }
.hero__kicker {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.5em; text-indent: 0.5em;
  color: var(--gold); opacity: 0.85;
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.6vw, 58px);
  letter-spacing: 0.14em; text-indent: 0.14em;
  background: linear-gradient(180deg, #fff8e4, var(--gold) 52%, var(--gold-deep));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 22px rgba(232, 201, 121, 0.22));
}
.hero__sub { color: var(--ink-dim); font-size: 14px; letter-spacing: 0.06em; }
.hero__badges { display: flex; gap: var(--sp-2); flex-wrap: wrap; justify-content: center; margin-top: var(--sp-1); }

/* 工具类 */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.is-hidden { display: none !important; }

/* ==========================================================================
   降级：不支持 color-mix() 的旧浏览器
   用 @supports not —— 不认识 color-mix 的解析器会整块跳过，不会因语法无效而出错。
   ========================================================================== */

@supports not (color: color-mix(in srgb, red 50%, transparent)) {
  .node__emblem { border-color: rgba(255, 255, 255, 0.22); }
  .node__emblem::after { border-color: rgba(255, 255, 255, 0.18); }
  .node__status.is-new { border-color: rgba(232, 201, 121, 0.5); }
}

/* 无障碍：减少动态效果 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}