:root {
  color-scheme: dark;
  --bg: #071018;
  --panel: rgba(9, 20, 29, 0.83);
  --line: rgba(163, 224, 222, 0.16);
  --muted: #88a3ad;
  --text: #effcf5;
  --mint: #61f6d4;
  --pink: #ff5f82;
  --yellow: #ffd166;
}

* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; background: var(--bg); color: var(--text); }
body { font-family: 'Space Mono', 'Microsoft YaHei', 'PingFang SC', sans-serif; }
button, input { font: inherit; }
button { cursor: pointer; }

.game-shell { position: relative; width: 100%; height: 100%; isolation: isolate; }
#game-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; background: #071018; }
.vignette { position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 180px rgba(0,0,0,.65); z-index: 1; }

.hud-top { position: absolute; top: 28px; left: 34px; right: 34px; display: flex; align-items: center; justify-content: space-between; z-index: 3; pointer-events: none; }
.brand-compact, .brand-lockup { display: flex; align-items: baseline; gap: 9px; letter-spacing: .16em; font-size: 17px; font-weight: 700; }
.brand-compact b, .brand-lockup b { color: var(--mint); font-weight: 700; }
.brand-mark { color: var(--pink); letter-spacing: -.14em; margin-right: -4px; }
.connection-pill { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: rgba(6, 15, 22, .7); padding: 8px 12px; font-size: 10px; letter-spacing: .12em; color: var(--muted); }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 13px var(--mint); display: inline-block; }
.status-dot.offline { background: var(--pink); box-shadow: 0 0 13px var(--pink); }

.panel { background: var(--panel); border: 1px solid var(--line); backdrop-filter: blur(12px); }
.leaderboard { position: absolute; top: 86px; right: 34px; width: 256px; z-index: 3; }
.panel-heading { display: flex; justify-content: space-between; align-items: center; padding: 13px 15px 11px; border-bottom: 1px solid var(--line); font-size: 10px; letter-spacing: .15em; color: var(--muted); }
.live-count { color: var(--mint); font-size: 9px; }
.leaderboard-list { padding: 8px 0 10px; }
.leader-row { display: grid; grid-template-columns: 25px 13px 1fr auto; align-items: center; gap: 8px; padding: 8px 14px; font-size: 11px; }
.leader-row.local { background: rgba(97, 246, 212, .08); }
.leader-rank { color: #63808b; font-size: 10px; }
.leader-dot { width: 8px; height: 8px; border-radius: 50%; box-shadow: 0 0 9px currentColor; }
.leader-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.leader-length { color: var(--mint); font-size: 10px; }

.minimap { position: absolute; left: 34px; bottom: 44px; width: 248px; z-index: 3; }
.minimap canvas { width: 100%; height: auto; display: block; padding: 13px; }
.minimap .panel-heading { padding-bottom: 10px; }

.bottom-hud { position: absolute; left: 34px; bottom: 266px; display: flex; gap: 8px; z-index: 3; }
.stat-block { min-width: 105px; padding: 11px 14px; display: grid; gap: 4px; }
.stat-label { color: var(--muted); font-size: 9px; letter-spacing: .14em; }
.stat-block strong { color: var(--text); font-size: 21px; letter-spacing: .04em; }
.boost-indicator { min-width: 180px; align-self: stretch; display: flex; align-items: center; gap: 9px; padding: 0 13px; border: 1px solid var(--line); background: rgba(9, 20, 29, .56); color: var(--muted); font-size: 10px; letter-spacing: .1em; }
.boost-key, .help-key { color: var(--yellow); border: 1px solid rgba(255, 209, 102, .45); padding: 4px 6px; font-size: 9px; }
.boost-meter { width: 42px; height: 4px; background: rgba(255,255,255,.12); overflow: hidden; }
.boost-meter i { display: block; width: 100%; height: 100%; background: var(--yellow); transform-origin: left; transform: scaleX(.78); transition: transform .1s linear; }
.boost-indicator.active { color: var(--yellow); border-color: rgba(255, 209, 102, .4); }
.corner-help { position: absolute; right: 34px; bottom: 38px; z-index: 3; color: #718993; font-size: 9px; letter-spacing: .1em; }
.help-separator { color: var(--pink); margin: 0 8px; }

.join-screen, .death-screen { position: absolute; inset: 0; display: grid; place-items: center; z-index: 8; background: rgba(4, 10, 15, .72); backdrop-filter: blur(6px); }
.join-card, .death-card { width: min(500px, calc(100vw - 40px)); padding: 42px; border: 1px solid rgba(97, 246, 212, .22); background: rgba(7, 16, 24, .92); box-shadow: 0 24px 90px rgba(0,0,0,.38); }
.brand-lockup { font-size: 19px; margin-bottom: 48px; }
.eyebrow { margin: 0 0 14px; color: var(--pink); font-size: 10px; letter-spacing: .22em; }
h1, h2 { margin: 0; font-family: 'Microsoft YaHei', 'PingFang SC', 'Barlow Condensed', sans-serif; font-weight: 700; letter-spacing: 0; line-height: 1.05; }
h1 { font-size: clamp(52px, 8vw, 86px); max-width: 400px; }
h2 { font-size: clamp(48px, 8vw, 72px); }
.join-copy, .death-card p { margin: 20px 0 38px; color: var(--muted); font-size: 12px; }
#join-form label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 10px; letter-spacing: .14em; }
.name-row { display: flex; gap: 8px; }
.name-row input { min-width: 0; flex: 1; border: 1px solid var(--line); background: rgba(255,255,255,.035); color: var(--text); padding: 13px 14px; outline: none; }
.name-row input:focus { border-color: var(--mint); box-shadow: 0 0 0 2px rgba(97, 246, 212, .1); }
.primary-button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid var(--mint); background: var(--mint); color: #071018; padding: 0 18px; min-height: 47px; font-size: 11px; letter-spacing: .14em; font-weight: 700; }
.primary-button:hover { background: #a4ffec; }
.button-arrow { font-size: 16px; }
.join-meta { display: flex; align-items: center; gap: 8px; margin-top: 25px; color: #71909a; font-size: 9px; letter-spacing: .1em; }
.meta-divider { width: 1px; height: 12px; background: var(--line); margin: 0 5px; }
.death-card { text-align: center; }
.death-card .eyebrow { color: var(--pink); }
.death-card .primary-button { margin-top: 4px; }
.hidden { display: none !important; }

@media (max-width: 700px) {
  .hud-top { top: 18px; left: 17px; right: 17px; }
  .brand-compact { font-size: 13px; }
  .leaderboard { top: 63px; right: 17px; width: 205px; }
  .leader-row { padding: 7px 10px; grid-template-columns: 21px 10px 1fr auto; font-size: 10px; }
  .minimap { left: 17px; bottom: 18px; width: 172px; }
  .minimap canvas { padding: 9px; }
  .bottom-hud { left: 17px; bottom: 205px; gap: 5px; }
  .stat-block { min-width: 78px; padding: 9px 10px; }
  .stat-block strong { font-size: 17px; }
  .boost-indicator { min-width: 118px; padding: 0 9px; gap: 6px; font-size: 8px; }
  .boost-meter { width: 27px; }
  .corner-help { right: 17px; bottom: 18px; font-size: 8px; max-width: 145px; text-align: right; line-height: 1.6; }
  .join-card, .death-card { padding: 28px 22px; }
  .brand-lockup { margin-bottom: 36px; }
  .name-row { flex-direction: column; }
  .primary-button { width: 100%; }
}