:root {
  --bg: #07090f;
  --accent: #ff4d2e;
  --accent2: #ffb03a;
  --cyan: #35e0ff;
  --panel: rgba(18, 22, 34, 0.86);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text: #eef2f8;
  --muted: #9aa6b8;
}

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

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

#bg-particles { position: fixed; inset: 0; z-index: 0; }

.screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  z-index: 1; opacity: 0; visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.screen.active { opacity: 1; visibility: visible; }
.hidden { display: none !important; }

/* ===== 开始界面 ===== */
#screen-start { background: radial-gradient(1200px 700px at 50% 30%, rgba(255,77,46,0.16), transparent 60%), radial-gradient(900px 600px at 80% 80%, rgba(53,224,255,0.10), transparent 60%), linear-gradient(180deg, #0a0d16 0%, #07090f 100%); }
.start-inner { text-align: center; z-index: 2; animation: fadeUp 0.8s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

.logo-badge {
  display: inline-block; padding: 6px 16px; margin-bottom: 18px;
  border: 1px solid var(--accent2); border-radius: 20px;
  color: var(--accent2); letter-spacing: 4px; font-size: 12px; font-weight: 700;
}
.title {
  font-size: 88px; font-weight: 900; letter-spacing: 8px; line-height: 1;
  background: linear-gradient(180deg, #fff 20%, #ff8a5a 70%, #ff4d2e 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 60px rgba(255,77,46,0.35);
  filter: drop-shadow(0 6px 24px rgba(255,77,46,0.25));
}
.subtitle { margin-top: 16px; color: var(--muted); letter-spacing: 4px; font-size: 15px; }

.start-buttons { display: flex; gap: 24px; justify-content: center; margin-top: 48px; flex-wrap: wrap; }
.btn {
  cursor: pointer; border: none; border-radius: 14px; padding: 14px 30px;
  font-size: 18px; font-weight: 700; letter-spacing: 1px; color: #fff;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  position: relative; overflow: hidden;
}
.btn small { display: block; font-size: 12px; font-weight: 500; opacity: 0.8; margin-top: 4px; letter-spacing: 1px; }
.btn .btn-ico { margin-right: 6px; }
.btn:active { transform: scale(0.96); }
.btn-primary { background: linear-gradient(135deg, #ff4d2e, #e23b1f); box-shadow: 0 8px 30px rgba(255,77,46,0.4); min-width: 190px; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(255,77,46,0.55); }
.btn-secondary { background: linear-gradient(135deg, #35a6ff, #1f6fe2); box-shadow: 0 8px 30px rgba(53,166,255,0.35); min-width: 190px; }
.btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(53,166,255,0.5); }
.btn-ghost { background: rgba(255,255,255,0.06); border: 1px solid var(--panel-border); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn-danger { background: linear-gradient(135deg, #b81f1f, #8a1414); }

.controls-hint { margin-top: 46px; display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.controls-hint span {
  padding: 6px 14px; border: 1px solid var(--panel-border); border-radius: 8px;
  background: rgba(255,255,255,0.04); color: var(--muted); font-size: 13px;
}

/* ===== 面板 ===== */
.panel {
  width: min(860px, 92vw); max-height: 92vh; overflow-y: auto;
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 20px;
  padding: 34px 38px; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  backdrop-filter: blur(12px); animation: fadeUp 0.4s ease;
}
.panel-title { font-size: 30px; font-weight: 800; letter-spacing: 2px; }
.panel-sub { color: var(--muted); margin: 8px 0 22px; }
.panel-actions { display: flex; gap: 14px; margin-top: 26px; justify-content: flex-end; }

/* ===== 装备 ===== */
.equip-section { margin-bottom: 22px; }
.equip-label { font-size: 15px; color: var(--cyan); font-weight: 700; letter-spacing: 2px; margin-bottom: 12px; }
.weapon-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.weapon-card {
  position: relative; border: 2px solid var(--panel-border); border-radius: 14px;
  padding: 16px; cursor: pointer; background: rgba(255,255,255,0.03);
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.weapon-card:hover { border-color: rgba(53,224,255,0.5); transform: translateY(-3px); }
.weapon-card.selected { border-color: var(--accent2); background: rgba(255,176,58,0.12); box-shadow: 0 0 24px rgba(255,176,58,0.25); }
.weapon-card.selected::after {
  content: "✓"; position: absolute; top: 10px; right: 12px;
  color: var(--accent2); font-weight: 900; font-size: 20px;
}
.weapon-ico { font-size: 34px; text-align: center; margin-bottom: 8px; }
.weapon-name { font-weight: 700; font-size: 15px; text-align: center; }
.weapon-stats { margin-top: 10px; font-size: 12px; color: var(--muted); }
.weapon-stat { display: flex; justify-content: space-between; padding: 3px 0; border-bottom: 1px dashed rgba(255,255,255,0.06); }
.stat-bar { height: 5px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; margin-top: 3px; }
.stat-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--accent2)); }

/* ===== 大厅 ===== */
#screen-lobby { flex-direction: column; padding: 30px 5vw; justify-content: flex-start; }
.lobby-head { width: 100%; display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 8px; }
.lobby-tools { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.name-row { display: flex; align-items: center; gap: 8px; }
.name-row label { color: var(--muted); font-size: 14px; }
.name-row input {
  padding: 10px 12px; border-radius: 10px; border: 1px solid var(--panel-border);
  background: rgba(255,255,255,0.06); color: var(--text); font-size: 15px; width: 150px; outline: none;
}
.name-row input:focus { border-color: var(--cyan); }
.lobby-status { width: 100%; color: var(--muted); font-size: 14px; margin: 6px 0 16px; }
.room-list { width: 100%; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; overflow-y: auto; }
.room-card {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 16px; padding: 18px;
  transition: transform 0.15s, border-color 0.15s;
}
.room-card:hover { border-color: rgba(255,176,58,0.5); transform: translateY(-3px); }
.room-card.playing { opacity: 0.55; }
.room-name { font-size: 18px; font-weight: 700; }
.room-info { color: var(--muted); font-size: 13px; margin: 8px 0 12px; }
.room-info b { color: var(--text); font-weight: 600; }
.room-card .btn { width: 100%; padding: 10px; font-size: 15px; }
.room-empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 60px 0; font-size: 16px; }

/* ===== 房间 ===== */
.room-panel { min-width: 520px; }
.room-meta { color: var(--muted); margin: 10px 0 18px; font-size: 14px; }
.room-meta b { color: var(--text); }
.room-players { display: flex; flex-direction: column; gap: 10px; }
.room-player {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  background: rgba(255,255,255,0.04); border-radius: 12px; border: 1px solid var(--panel-border);
}
.room-player .avatar { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--accent2), var(--accent)); display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; }
.room-player .pname { flex: 1; font-weight: 600; }
.room-player .badge { font-size: 12px; padding: 3px 10px; border-radius: 10px; }
.badge-host { background: rgba(255,176,58,0.2); color: var(--accent2); }
.badge-ready { background: rgba(80,220,120,0.2); color: #50dc78; }
.badge-wait { background: rgba(255,255,255,0.08); color: var(--muted); }
.badge-you { background: rgba(53,224,255,0.18); color: var(--cyan); }

/* ===== 游戏 HUD ===== */
#game-container { position: absolute; inset: 0; }
#game-container canvas { display: block; }

#hud { position: absolute; inset: 0; pointer-events: none; z-index: 5; }
#hud-top { position: absolute; top: 0; left: 0; right: 0; display: flex; align-items: flex-start; justify-content: space-between; padding: 16px 20px; }
#hud-timer { font-size: 22px; font-weight: 800; letter-spacing: 2px; text-shadow: 0 2px 8px rgba(0,0,0,0.6); }
#hud-killfeed { display: flex; flex-direction: column; gap: 4px; align-items: flex-end; max-width: 40vw; }
.kf-item { background: rgba(0,0,0,0.45); padding: 5px 12px; border-radius: 6px; font-size: 13px; animation: kfIn 0.2s ease; }
.kf-item .killer { color: #ffb03a; font-weight: 700; }
.kf-item .victim { color: #ff8a8a; font-weight: 700; }
@keyframes kfIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }

#hud-crosshair { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 40px; height: 40px; }
.ch-dot { position: absolute; top: 50%; left: 50%; width: 4px; height: 4px; border-radius: 50%; background: #fff; transform: translate(-50%, -50%); box-shadow: 0 0 4px rgba(0,0,0,0.8); }
.ch-line { position: absolute; background: #fff; box-shadow: 0 0 4px rgba(0,0,0,0.8); }
.ch-top { top: 0; left: 50%; width: 2px; height: 9px; transform: translateX(-50%); }
.ch-bottom { bottom: 0; left: 50%; width: 2px; height: 9px; transform: translateX(-50%); }
.ch-left { left: 0; top: 50%; width: 9px; height: 2px; transform: translateY(-50%); }
.ch-right { right: 0; top: 50%; width: 9px; height: 2px; transform: translateY(-50%); }

#hud-hitmarker { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 22px; height: 22px; }
#hud-hitmarker::before, #hud-hitmarker::after, #hud-hitmarker i::before, #hud-hitmarker i::after { content: ""; position: absolute; background: #fff; }
#hud-hitmarker::before { top: 0; left: 9px; width: 3px; height: 8px; transform: rotate(0deg); }
#hud-hitmarker::after { bottom: 0; left: 9px; width: 3px; height: 8px; }
#hud-hitmarker i::before { left: 0; top: 9px; width: 8px; height: 3px; }
#hud-hitmarker i::after { right: 0; top: 9px; width: 8px; height: 3px; }

#scope-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 200vmax; height: 200vmax; border-radius: 50%; box-shadow: 0 0 0 100vmax rgba(0,0,0,0.92); pointer-events: none; }
#scope-overlay::before, #scope-overlay::after { content: ""; position: absolute; background: rgba(0,0,0,0.8); }
#scope-overlay::before { left: 50%; top: 0; bottom: 0; width: 2px; transform: translateX(-50%); }
#scope-overlay::after { top: 50%; left: 0; right: 0; height: 2px; transform: translateY(-50%); }

#hud-bottom { position: absolute; left: 0; right: 0; bottom: 0; display: flex; align-items: flex-end; justify-content: space-between; padding: 20px 24px; }
#hud-health-wrap { display: flex; align-items: center; gap: 10px; }
.hud-health-label { font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.hud-health-bar { width: 180px; height: 16px; border-radius: 8px; background: rgba(0,0,0,0.5); overflow: hidden; border: 1px solid rgba(255,255,255,0.2); }
#hud-health-fill { height: 100%; width: 100%; background: linear-gradient(90deg, #2ecc71, #7be07b); transition: width 0.2s ease, background 0.2s; }
#hud-health-num { font-size: 20px; font-weight: 800; min-width: 40px; }
#hud-weapon { text-align: right; }
#hud-weapon-name { font-size: 13px; color: var(--muted); letter-spacing: 1px; margin-bottom: 2px; }
#hud-ammo { font-size: 34px; font-weight: 800; line-height: 1; }
#hud-ammo .slash { color: var(--muted); font-weight: 400; font-size: 22px; margin: 0 2px; }
#hud-score { display: flex; gap: 18px; align-items: flex-end; }
.hud-score-row { font-size: 13px; color: var(--muted); }
.hud-score-row b { font-size: 20px; color: var(--text); margin-left: 2px; }

#hud-damage { position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 140px 40px rgba(255,0,0,0.55); opacity: 0; transition: opacity 0.12s; }
#hud-message { position: absolute; top: 24%; left: 50%; transform: translateX(-50%); font-size: 20px; font-weight: 700; color: var(--cyan); text-shadow: 0 2px 10px rgba(0,0,0,0.6); opacity: 0; transition: opacity 0.3s; }

#hud-scoreboard { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: min(520px, 92vw); background: rgba(10,13,22,0.92); border: 1px solid var(--panel-border); border-radius: 16px; padding: 20px; pointer-events: none; }
#hud-scoreboard h3 { text-align: center; margin-bottom: 14px; letter-spacing: 2px; }
.sb-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sb-table th, .sb-table td { padding: 8px 10px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.06); }
.sb-table th { color: var(--muted); font-weight: 600; }
.sb-table .me { color: var(--cyan); font-weight: 700; }

/* ===== 覆盖层 ===== */
.overlay { position: absolute; inset: 0; z-index: 20; background: rgba(4,6,12,0.72); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.overlay-box { background: var(--panel); border: 1px solid var(--panel-border); border-radius: 18px; padding: 34px 44px; text-align: center; animation: fadeUp 0.25s ease; }
.overlay-box h2 { font-size: 28px; letter-spacing: 2px; margin-bottom: 10px; }
.overlay-box p { color: var(--muted); margin-bottom: 20px; }
.death-box h2 { color: #ff5a5a; }
#death-countdown { font-size: 48px; font-weight: 900; color: var(--accent2); margin: 10px 0; }
.end-box { min-width: 380px; }
#end-scores { margin: 16px 0; max-height: 300px; overflow-y: auto; }
.end-row { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; margin-bottom: 6px; background: rgba(255,255,255,0.04); font-size: 15px; }
.end-row .rank { width: 28px; height: 28px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-weight: 800; }
.end-row .ename { flex: 1; text-align: left; font-weight: 600; }
.end-row.winner .rank { background: var(--accent2); color: #000; }
.end-row.winner { border: 1px solid rgba(255,176,58,0.5); }

/* ===== 弹窗 ===== */
.modal { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.modal-box { background: #121724; border: 1px solid var(--panel-border); border-radius: 18px; padding: 26px 30px; width: min(420px, 92vw); animation: fadeUp 0.25s ease; }
.modal-box h3 { margin-bottom: 18px; letter-spacing: 1px; }
.modal-body { display: flex; flex-direction: column; gap: 14px; }
.modal-field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.modal-field input, .modal-field select { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--panel-border); background: rgba(255,255,255,0.06); color: var(--text); font-size: 15px; outline: none; }
.modal-field select option { background: #121724; }
.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 22px; }

/* ===== Toast ===== */
.toast { position: fixed; top: 24px; left: 50%; transform: translateX(-50%); z-index: 100; background: #1b2233; border: 1px solid rgba(255,255,255,0.15); padding: 12px 22px; border-radius: 12px; font-size: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); animation: fadeUp 0.25s ease; }
.toast.error { border-color: rgba(255,90,90,0.5); color: #ff9a9a; }
.toast.success { border-color: rgba(80,220,120,0.5); color: #8ef0a8; }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }

@media (max-width: 640px) {
  .title { font-size: 52px; letter-spacing: 4px; }
  .start-buttons { flex-direction: column; align-items: center; }
  .panel { padding: 24px 20px; }
  .room-panel { min-width: 0; width: 92vw; }
  #hud-bottom { padding: 14px 12px; }
  .hud-health-bar { width: 110px; }
}

/* ===== 对局设置 ===== */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.setting-field { display: flex; flex-direction: column; gap: 6px; }
.setting-field label { font-size: 13px; color: var(--muted); }
.setting-field select, .setting-field input[type="range"] { width: 100%; }
.setting-field select { padding: 9px 10px; border-radius: 10px; border: 1px solid var(--panel-border); background: rgba(255,255,255,0.06); color: var(--text); font-size: 14px; outline: none; }
.setting-field select option { background: #121724; }
.setting-field input[type="range"] { accent-color: var(--accent2); cursor: pointer; }
.setting-val { font-size: 14px; color: var(--cyan); font-weight: 700; text-align: center; }

/* ===== 房间队伍 / 设置 ===== */
.room-team { display: flex; gap: 12px; margin: 16px 0; }
.team-btn { flex: 1; padding: 12px; font-size: 15px; border: 2px solid var(--panel-border); background: rgba(255,255,255,0.04); color: var(--text); }
.team-btn.team-red.selected { border-color: #ff5a5a; background: rgba(255,80,80,0.16); color: #ff9a9a; }
.team-btn.team-blue.selected { border-color: #4d9bff; background: rgba(77,155,255,0.16); color: #9cc3ff; }
.room-settings { background: rgba(255,255,255,0.04); border: 1px solid var(--panel-border); border-radius: 12px; padding: 12px 16px; margin-bottom: 16px; font-size: 14px; color: var(--muted); line-height: 1.9; }
.room-settings b { color: var(--text); font-weight: 600; }
.badge-red { background: rgba(255,80,80,0.2); color: #ff8a8a; }
.badge-blue { background: rgba(77,155,255,0.2); color: #8ab4ff; }

/* ===== HUD 队伍比分 / 手雷 ===== */
#hud-team { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 800; background: rgba(0,0,0,0.4); padding: 6px 16px; border-radius: 10px; }
.ts-red { color: #ff6b6b; }
.ts-blue { color: #6ba6ff; }
.ts-vs { color: var(--muted); font-weight: 600; font-size: 14px; }
#hud-team b { font-size: 22px; }
#hud-grenade { margin-top: 6px; font-size: 15px; color: var(--muted); }
#hud-grenade-num { color: var(--text); font-weight: 700; }
#hud-grenade .gk { font-size: 11px; color: var(--muted); }

/* ===== 受击方向 / 闪光 / 爆头 ===== */
#hud-dir { position: absolute; top: 50%; left: 50%; width: 112px; height: 112px; margin: -56px 0 0 -56px; pointer-events: none; border-radius: 50%; border: 2px solid rgba(255,60,60,0.35); box-shadow: 0 0 14px rgba(255,0,0,0.35), inset 0 0 10px rgba(255,0,0,0.15); }
#hud-dir-arrow { position: absolute; top: -7px; left: 50%; margin-left: -14px; font-size: 28px; line-height: 1; color: #ff4444; text-shadow: 0 0 14px rgba(255,0,0,0.95); }
#hud-flash { position: absolute; inset: 0; background: #ffffff; opacity: 0; pointer-events: none; }
#hud-hitmarker.headshot::before, #hud-hitmarker.headshot::after, #hud-hitmarker.headshot i::before, #hud-hitmarker.headshot i::after { background: #ff3b3b; }
.btn-settings { padding: 10px 24px; font-size: 15px; min-width: 0; margin-top: 26px; }
.modal-field input[type="range"] { padding: 0; accent-color: var(--accent2); cursor: pointer; }