/* ============ 基础与主题(古代遗迹 + 摸金探险 + 暗金古籍风) ============ */
:root {
  --bg-dark: #0d0a07;
  --wood: #241a10;
  --wood-dark: #170f08;
  --wood-light: #33261a;
  --gold: #c9a227;
  --gold-bright: #e8c76a;
  --gold-dim: #7d6320;
  --gold-faint: rgba(201, 162, 39, 0.35);
  --paper: #e6d8b8;
  --paper-dark: #d2c096;
  --paper-edge: #b89f6a;
  --ink: #33261a;
  --ink-light: #5a4632;
  --red-btn: #8c2f22;
  --red-btn-dark: #6d2318;
  --red-btn-hover: #a03a2b;
  --q-blue: #4a7fd4;
  --q-purple: #9b59d0;
  --q-gold: #d4a017;
  --q-red: #c0392b;
  --hp: #a2342a;
  --stamina: #3f7d46;
  --danger: #c0392b;
  /* 负重四阶段 → 体力条颜色(§负重):青/黄/橙/红 */
  --weight-light: #2fbfae;
  --weight-burden: #e0c341;
  --weight-overload: #e0812f;
  --weight-crushed: #d23c3c;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.6);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-dark);
  font-family: "Kaiti SC", "STKaiti", KaiTi, "Noto Serif SC", "SimSun", serif;
  color: var(--paper);
  user-select: none;
}

#world {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
  z-index: 0;
}
#world.hidden { display: none; }

#ui-root { position: fixed; inset: 0; z-index: 10; pointer-events: none; }
#ui-root > * { pointer-events: auto; }

/* ---- 通用按钮:红布按钮 / 暗金描边按钮 ---- */
.btn {
  display: inline-block;
  padding: 8px 22px;
  font-family: inherit;
  font-size: 17px;
  letter-spacing: 4px;
  color: var(--paper);
  background: linear-gradient(180deg, var(--red-btn), var(--red-btn-dark));
  border: 1px solid var(--gold-dim);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s, box-shadow 0.12s, transform 0.06s;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.btn:hover { background: var(--red-btn-hover); box-shadow: 0 0 10px var(--gold-faint), 0 2px 6px rgba(0, 0, 0, 0.5); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn.gold {
  background: linear-gradient(180deg, #4a3a15, #2e240c);
  border-color: var(--gold);
  color: var(--gold-bright);
}
.btn.gold:hover { box-shadow: 0 0 12px var(--gold-faint); background: #5a4820; }

.btn.small { padding: 4px 12px; font-size: 14px; letter-spacing: 2px; }
.btn.danger { background: linear-gradient(180deg, #5c1810, #3f0f09); border-color: #8c2f22; }

/* ---- 输入框古风化 ---- */
.input-antique {
  font-family: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--paper-dark);
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  padding: 5px 10px;
  outline: none;
}
.input-antique:focus { border-color: var(--gold); box-shadow: 0 0 8px var(--gold-faint); }

/* ---- 品质色 ---- */
.q-blue { color: var(--q-blue); }
.q-purple { color: var(--q-purple); }
.q-gold { color: var(--q-gold); }
.q-red { color: var(--q-red); }
.bq-blue { border-color: var(--q-blue); }
.bq-purple { border-color: var(--q-purple); }
.bq-gold { border-color: var(--q-gold); }
.bq-red { border-color: var(--q-red); }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--wood-dark); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ---- Toast 提示 ---- */
#toast-layer {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 8px 26px;
  background: rgba(20, 14, 8, 0.92);
  border: 1px solid var(--gold-dim);
  border-radius: 4px;
  color: var(--gold-bright);
  font-size: 16px;
  letter-spacing: 2px;
  box-shadow: var(--shadow);
  animation: toast-in 0.25s ease, toast-out 0.4s ease 2.2s forwards;
}
.toast.warn { color: #e88; border-color: #8c2f22; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-8px); } }

/* ---- 启动页(页面入口层,唯一启动界面):静态背景图 + 金色文字标 Logo + 底部提示 ---- */
#startup-video-overlay {
  position: fixed;
  inset: 0;
  z-index: 901;
  background: #000;
  cursor: pointer;
  pointer-events: auto;
  transition: opacity 0.35s ease-out;
}
#startup-video-overlay.fade-out { opacity: 0; }
#startup-video-overlay.hidden { display: none; }
/* 静态启动背景:全屏 cover 适配不同窗口比例,居中不拉伸 */
#startup-video-overlay .startup-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}
/* 游戏 Logo(§Logo):叠加背景图上方居中偏上,不拦截点击;
   当前为过渡文字标(金色渐变+辉光,同旧开始页视觉),正式 Logo 图片就位后替换为 img */
#startup-video-overlay .startup-logo {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  pointer-events: none;
  text-align: center;
  animation: startup-logo-in 1.6s ease-out both;
}
#startup-video-overlay .startup-logo-title {
  font-size: clamp(36px, 7vw, 68px);
  font-weight: bold;
  letter-spacing: 0.32em;
  text-indent: 0.32em; /* 抵消末字字距,保持视觉居中 */
  white-space: nowrap;
  background: linear-gradient(180deg, #f4dd9a 0%, #e0b64f 55%, #b98a2d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 18px rgba(201, 162, 39, 0.4)) drop-shadow(0 3px 5px rgba(0, 0, 0, 0.7));
}
#startup-video-overlay .startup-logo-sub {
  margin-top: 10px;
  font-size: clamp(11px, 1.6vw, 15px);
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  white-space: nowrap;
  color: rgba(214, 186, 128, 0.75);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
}
@keyframes startup-logo-in {
  from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
#startup-video-overlay .startup-video-hint {
  position: absolute;
  bottom: 72px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  padding: 8px 26px;
  font-size: 20px;
  letter-spacing: 6px;
  text-indent: 6px;
  color: var(--paper);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--gold-faint);
  border-radius: 4px;
  text-shadow: 0 2px 6px #000;
  white-space: nowrap;
  pointer-events: none;
  animation: startup-hint-pulse 2.2s ease-in-out infinite;
}
@keyframes startup-hint-pulse { 0%, 100% { opacity: 0.65; } 50% { opacity: 1; } }