/* =========================================================
   仓库行动 HUD 样式
   纯 CSS，无外部依赖；使用 CSS 变量便于统一调整
   ========================================================= */
:root {
  --accent: #ffb020;          /* 主强调色（橙） */
  --accent-2: #ff5a2d;        /* 危险色 */
  --hp: #35d07f;              /* 生命条 */
  --armor: #4aa8ff;           /* 护甲条 */
  --panel-bg: rgba(10, 14, 18, 0.92);
  --hud-bg: rgba(8, 12, 16, 0.62);
  --text: #e8eef2;
  --muted: #8d9aa5;
  --border: rgba(255, 176, 32, 0.35);
  font-size: 16px;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05070a;
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

#app { position: fixed; inset: 0; cursor: crosshair; }
#app canvas { display: block; width: 100%; height: 100%; }

.hidden { display: none !important; }

/* =========================== HUD =========================== */
.hud { position: fixed; inset: 0; pointer-events: none; z-index: 10; }

/* ---------- 左上角生命/护甲 ---------- */
.vitals {
  position: absolute;
  top: 26px;
  left: 28px;
  width: 268px;
  padding: 14px 18px 12px;
  background:
    linear-gradient(135deg, var(--hud-bg), rgba(8, 12, 16, 0.25)),
    repeating-linear-gradient(45deg, rgba(255,176,32,0.03) 0 2px, transparent 2px 6px);
  border-left: 3px solid var(--accent);
  border-top: 1px solid rgba(255,176,32,0.18);
  box-shadow: 0 4px 24px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.04);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
/* 角标 */
.vitals::after {
  content: "";
  position: absolute;
  right: 8px; top: 8px;
  width: 22px; height: 22px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  opacity: 0.55;
}
.vitals-title {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--muted);
  margin-bottom: 10px;
}
.stat-row { display: flex; align-items: baseline; justify-content: space-between; }
.stat-row.small { margin-top: 10px; }
.stat-name { font-size: 12px; letter-spacing: 2px; color: var(--muted); }
.stat-num {
  font-family: "Consolas", "Courier New", monospace;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-shadow: 0 0 12px rgba(53, 208, 127, 0.55);
}
.bar {
  position: relative;
  height: 8px;
  margin-top: 5px;
  background: rgba(255, 255, 255, 0.09);
  overflow: hidden;
}
.bar i { display: block; height: 100%; width: 100%; transition: width 0.18s ease-out; }
.bar.hp i { background: linear-gradient(90deg, #1f9c5d, var(--hp)); box-shadow: 0 0 10px rgba(53, 208, 127, 0.65); }
.bar.armor i { background: linear-gradient(90deg, #1f6bb5, var(--armor)); box-shadow: 0 0 10px rgba(74, 168, 255, 0.65); }
.bar i.low { background: linear-gradient(90deg, #a3271b, var(--accent-2)) !important; box-shadow: 0 0 12px rgba(255, 90, 45, 0.8) !important; }

/* ---------- 右上角比分 ---------- */
.score {
  position: absolute;
  top: 26px;
  right: 28px;
  display: flex;
  gap: 10px;
}
.score-item {
  min-width: 96px;
  padding: 8px 16px 10px;
  text-align: right;
  background:
    linear-gradient(180deg, var(--hud-bg), rgba(8,12,16,0.3)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 8px);
  border-top: 2px solid var(--accent);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 18px rgba(0,0,0,0.4);
}
.score-item.dim { border-top-color: rgba(255, 255, 255, 0.22); }
.score-label { display: block; font-size: 10px; letter-spacing: 3px; color: var(--muted); }
.score-value {
  font-family: "Consolas", "Courier New", monospace;
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
}
.score-item.dim .score-value { color: #cfd8df; }

/* ---------- 右下角弹药 ---------- */
.ammo {
  position: absolute;
  right: 34px;
  bottom: 30px;
  text-align: right;
  padding: 12px 20px 10px;
  background:
    linear-gradient(225deg, var(--hud-bg), rgba(8, 12, 16, 0.2)),
    repeating-linear-gradient(-45deg, rgba(255,176,32,0.03) 0 2px, transparent 2px 6px);
  border-right: 3px solid var(--accent);
  border-bottom: 1px solid rgba(255,176,32,0.18);
  box-shadow: 0 4px 24px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.04);
  clip-path: polygon(10px 0, 100% 0, 100% 100%, 0 100%, 0 10px);
  min-width: 220px;
}
.ammo::after {
  content: "";
  position: absolute;
  left: 8px; bottom: 8px;
  width: 22px; height: 22px;
  border-bottom: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
  opacity: 0.55;
}
.weapon-name {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 4px;
}
.weapon-tag { font-size: 10px; color: var(--muted); letter-spacing: 1px; }
.ammo-line {
  font-family: "Consolas", "Courier New", monospace;
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 176, 32, 0.35);
}
#mag-value.low { color: var(--accent-2); text-shadow: 0 0 16px rgba(255, 90, 45, 0.7); }
/* 第三轮：空弹时数字红色闪烁 */
#mag-value.empty { color: #ff2b1a; text-shadow: 0 0 18px rgba(255, 40, 20, 0.95); animation: ammoEmpty 0.75s infinite; }
@keyframes ammoEmpty { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* 第三轮：弹药面板武器图标（纯 CSS 绘制，无额外资源） */
.weapon-icon {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 16px;
  margin-right: 10px;
  vertical-align: -2px;
  opacity: 0.85;
}
.weapon-icon::before,
.weapon-icon::after {
  content: "";
  position: absolute;
  background: linear-gradient(180deg, #d7dde3, #7b8794);
}
/* 枪身 */
.weapon-icon::before {
  left: 0; top: 4px;
  width: 40px; height: 7px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 18% 100%, 14% 78%, 0 78%);
}
/* 弹匣 + 枪托 */
.weapon-icon::after {
  right: 2px; top: 9px;
  width: 12px; height: 7px;
  clip-path: polygon(0 0, 100% 0, 78% 100%, 10% 100%);
}
.ammo-sep { font-size: 22px; color: var(--muted); margin: 0 6px; }
#reserve-value { font-size: 22px; color: var(--muted); }
.reload-tip {
  height: 16px;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}
.reload-tip.show { opacity: 1; }
.reload-tip.blink { animation: tipBlink 0.9s infinite; }
@keyframes tipBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

/* ---------- 准星 ---------- */
#crosshair {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0; height: 0;
  --spread: 9px;
  --len: 8px;
}
.ch-line {
  position: absolute;
  /* 第四轮：CF 经典绿色十字准星 + 黑色描边，明暗场景都清晰 */
  background: #4dde4d;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.8), 0 0 4px rgba(0, 0, 0, 0.9);
  transition: all 0.08s linear;
}
.ch-top { width: 2px; height: var(--len); left: -1px; top: calc(-1 * (var(--spread) + var(--len))); }
.ch-bottom { width: 2px; height: var(--len); left: -1px; top: var(--spread); }
.ch-left { height: 2px; width: var(--len); top: -1px; left: calc(-1 * (var(--spread) + var(--len))); }
.ch-right { height: 2px; width: var(--len); top: -1px; left: var(--spread); }
.ch-dot {
  position: absolute;
  width: 3px; height: 3px;
  left: -1.5px; top: -1.5px;
  background: #4dde4d;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.8), 0 0 4px rgba(0, 0, 0, 0.9);
}

/* 命中标记 */
#hitmarker {
  position: absolute;
  left: 0; top: 0;
  width: 26px; height: 26px;
  transform: translate(-50%, -50%);
  opacity: 0;
}
#hitmarker i {
  position: absolute;
  width: 8px; height: 2px;
  background: #fff;
  box-shadow: 0 0 6px rgba(255, 80, 60, 0.9);
}
#hitmarker i:nth-child(1) { left: 0; top: 4px; transform: rotate(45deg); }
#hitmarker i:nth-child(2) { right: 0; top: 4px; transform: rotate(-45deg); }
#hitmarker i:nth-child(3) { left: 0; bottom: 4px; transform: rotate(-45deg); }
#hitmarker i:nth-child(4) { right: 0; bottom: 4px; transform: rotate(45deg); }
#hitmarker.show { animation: hitPop 0.26s ease-out; }
#hitmarker.kill i { background: var(--accent-2); width: 10px; }
/* 第三轮：爆头命中金色标记 */
#hitmarker.head i { background: #ffd24a; box-shadow: 0 0 8px rgba(255, 200, 60, 0.95); }
@keyframes hitPop {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0.6); }
  40% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

/* 受击暗角 */
#damage-vignette {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 38%, rgba(180, 12, 12, 0.55) 78%, rgba(120, 0, 0, 0.92) 100%);
  transition: opacity 0.35s ease-out;
}
#damage-vignette.show { opacity: 1; transition-duration: 0.06s; }

/* 第三轮：悬浮击杀文字 */
#kill-popup {
  position: absolute;
  left: 50%;
  top: calc(50% + 96px);
  transform: translate(-50%, 0);
  padding: 4px 26px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 6px;
  color: #fff;
  background: linear-gradient(90deg, transparent, rgba(200, 30, 20, 0.55), transparent);
  text-shadow: 0 0 14px rgba(255, 60, 40, 0.9);
  opacity: 0;
  pointer-events: none;
}
#kill-popup.show { animation: killPop 1.1s ease-out forwards; }
#kill-popup.headshot { color: #ffd24a; text-shadow: 0 0 16px rgba(255, 190, 40, 0.95); }
@keyframes killPop {
  0% { opacity: 0; transform: translate(-50%, 14px) scale(0.8); }
  18% { opacity: 1; transform: translate(-50%, 0) scale(1.12); }
  32% { transform: translate(-50%, 0) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -22px) scale(1); }
}

/* 第三轮：开局操作提示，3 秒后自动淡出 */
.tips {
  position: absolute;
  left: 50%;
  top: 76px;
  transform: translateX(-50%);
  padding: 12px 22px;
  text-align: center;
  background: rgba(8, 12, 16, 0.62);
  border: 1px solid rgba(255, 176, 32, 0.22);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  transition: opacity 0.8s ease-out;
}
.tips.hide { opacity: 0; }
.tips-title { font-size: 11px; letter-spacing: 5px; color: var(--accent); margin-bottom: 6px; }
.tips-row { font-size: 12px; line-height: 1.9; color: #d5dee5; letter-spacing: 1px; }
.tips-row b { color: var(--accent); font-family: "Consolas", monospace; }
.tips-row.dim { color: var(--muted); font-size: 11px; }

/* 第三轮：FPS 调试面板（按 O 切换） */
.fps-panel {
  position: fixed;
  left: 50%;
  top: 8px;
  transform: translateX(-50%);
  z-index: 40;
  padding: 4px 14px;
  font: 12px/1.4 "Consolas", monospace;
  letter-spacing: 1px;
  color: #9fe8ff;
  background: rgba(0, 0, 0, 0.62);
  border: 1px solid rgba(120, 200, 255, 0.35);
  pointer-events: none;
}

/* 击杀播报 */
#killfeed {
  position: absolute;
  top: 110px;
  right: 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}
.kill-line {
  padding: 5px 12px;
  font-size: 12px;
  letter-spacing: 1px;
  color: #fff;
  background: rgba(10, 14, 18, 0.8);
  border-right: 3px solid var(--accent);
  animation: killIn 0.28s ease-out;
}
.kill-line b { color: var(--accent); }
.kill-line.fade { opacity: 0; transition: opacity 0.4s; }
@keyframes killIn { from { transform: translateX(24px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* 换弹进度条 */
#reload-bar {
  position: absolute;
  left: 50%;
  top: calc(50% + 42px);
  width: 190px;
  height: 5px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}
#reload-bar i { display: block; height: 100%; width: 0%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* 受击伤害数字 */
.damage-num {
  position: absolute;
  left: 50%;
  top: calc(50% + 84px);
  transform: translateX(-50%);
  font-family: "Consolas", "Courier New", monospace;
  font-size: 20px;
  font-weight: 700;
  color: #ff4a33;
  text-shadow: 0 0 12px rgba(255, 40, 20, 0.8);
  animation: dmgFloat 0.85s ease-out forwards;
  pointer-events: none;
}
@keyframes dmgFloat {
  0% { opacity: 0.2; transform: translate(-50%, 6px) scale(0.8); }
  20% { opacity: 1; transform: translate(-50%, 0) scale(1.1); }
  100% { opacity: 0; transform: translate(-50%, -34px) scale(1); }
}

/* =========================== 遮罩层 =========================== */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(30, 38, 46, 0.55), rgba(3, 5, 8, 0.96) 72%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 3px);
  backdrop-filter: blur(3px);
}
.panel {
  position: relative;
  width: min(860px, 92vw);
  padding: 44px 52px 38px;
  background: linear-gradient(160deg, rgba(20, 25, 30, 0.96), rgba(9, 12, 15, 0.98));
  border: 1px solid rgba(255, 176, 32, 0.28);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.7), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}
.panel::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 90px; height: 3px;
  background: var(--accent);
}
.small-panel { width: min(520px, 92vw); text-align: center; padding: 40px 46px; }

.game-title {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: 14px;
  color: #fff;
  text-shadow: 0 0 34px rgba(255, 176, 32, 0.32);
}
.game-sub {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 7px;
  color: var(--accent);
  text-transform: uppercase;
}

.menu-cols {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 34px;
  margin: 32px 0 28px;
}
.menu-block h3 {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--muted);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 14px;
}
.key-list { list-style: none; display: grid; gap: 9px; }
.key-list li { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.key-list b {
  min-width: 108px;
  padding: 4px 8px;
  font-family: "Consolas", monospace;
  font-size: 12px;
  text-align: center;
  color: var(--accent);
  border: 1px solid rgba(255, 176, 32, 0.35);
  background: rgba(255, 176, 32, 0.06);
}
.key-list span { color: #c8d2da; }
.brief { font-size: 13px; line-height: 1.9; color: #c8d2da; }
.brief b { color: var(--accent); }
.tip { margin-top: 14px; font-size: 12px; line-height: 1.7; color: var(--muted); }

.btn {
  pointer-events: auto;
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 15px 22px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 6px;
  color: #0b0f12;
  background: linear-gradient(90deg, #ffc44d, var(--accent));
  border: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: filter 0.15s, transform 0.15s;
}
.btn:hover { filter: brightness(1.12); transform: translateY(-1px); }
.btn:active { transform: translateY(1px); filter: brightness(0.95); }
.menu-foot { margin-top: 16px; text-align: center; font-size: 11px; color: var(--muted); letter-spacing: 1px; }

/* 加载面板 */
.loading-panel { text-align: center; }
.loading-panel .game-title { font-size: clamp(32px, 5vw, 52px); }
.loading-bar {
  width: min(420px, 70vw);
  height: 6px;
  margin: 34px auto 12px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.loading-bar i {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #8a5b00, var(--accent));
  box-shadow: 0 0 12px rgba(255, 176, 32, 0.7);
  transition: width 0.25s;
}
.loading-text { font-size: 13px; letter-spacing: 2px; color: var(--text); }
.loading-hint { margin-top: 8px; font-size: 11px; color: var(--muted); }

/* 暂停 / 死亡 */
.small-panel h2 { font-size: 26px; letter-spacing: 8px; margin-bottom: 10px; }
.death-panel h2 { color: var(--accent-2); text-shadow: 0 0 24px rgba(255, 90, 45, 0.5); }
.muted { font-size: 13px; color: var(--muted); letter-spacing: 1px; margin-bottom: 22px; }
.muted b { color: var(--accent); }

/* 暂停面板内的按键列表 */
.pause-keys {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: left;
}
.pause-keys h3 {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--muted);
  margin-bottom: 10px;
}
.pause-keys .key-list li { font-size: 12px; gap: 10px; }
.pause-keys .key-list b { min-width: 88px; font-size: 11px; padding: 3px 6px; }

/* 小屏适配 */
@media (max-width: 720px) {
  .vitals { width: 210px; top: 16px; left: 16px; padding: 10px 12px; }
  .stat-num { font-size: 24px; }
  .score { top: 16px; right: 16px; }
  .score-item { min-width: 74px; padding: 6px 10px; }
  .ammo { right: 16px; bottom: 18px; min-width: 170px; padding: 10px 14px; }
  .ammo-line { font-size: 34px; }
  .menu-cols { grid-template-columns: 1fr; gap: 22px; }
  .panel { padding: 30px 24px; }
  .game-title { letter-spacing: 8px; }
}