/* ASTROIDS — HUD & overlays.
   Layers: canvases are fixed full-screen; HUD sits above with
   pointer-events disabled so clicks fall through to the page. */

:root {
  --bg: #05070d;
  --panel: rgba(10, 15, 26, 0.82);
  --panel-border: rgba(110, 160, 220, 0.22);
  --text: #cfe0f5;
  --dim: #7f92ab;
  --accent: #5ad7ff;
  --credits: #ffd166;
  --good: #8aff80;
  --bad: #ff6b6b;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 0;
  min-height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

canvas {
  position: fixed;
  inset: 0;
  display: block;
}
#bg-canvas { z-index: 0; }
#game-canvas { z-index: 1; }
#fx-canvas { z-index: 2; pointer-events: none; }

.hidden { display: none !important; }

kbd {
  display: inline-block;
  padding: 1px 5px;
  border: 1px solid var(--panel-border);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 10px;
  color: var(--accent);
}

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

#hud {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  font-size: 12px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 10px 12px;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
}

.hud-top {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.stats-panel { min-width: 178px; }

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  line-height: 1.55;
}
.stat-row .label, .panel .label { color: var(--dim); letter-spacing: 0.09em; font-size: 10px; }
.stat-row .value { font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-row .value.credits { color: var(--credits); }
.stat-row .value.big { font-size: 17px; color: var(--accent); }

.xp-wrap { margin-top: 7px; }
.xp-head {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--dim);
  margin-bottom: 3px;
}
#hud-level { color: var(--accent); font-weight: 700; }

.bar {
  height: 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  transition: width 0.18s ease-out;
}
.fill.xp { background: linear-gradient(90deg, #3aa4ff, var(--accent)); }
.fill.shield { background: linear-gradient(90deg, #2a7fd4, #66d9ff); }
.fill.hull { background: linear-gradient(90deg, #d4482a, #ff9e4a); }

.points {
  margin-top: 7px;
  padding: 4px 7px;
  border: 1px dashed rgba(255, 209, 102, 0.5);
  border-radius: 6px;
  color: var(--credits);
  font-size: 10.5px;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.55; } }

.fleet {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 7px;
  padding: 4px 8px;
  border: 1px solid rgba(138, 255, 128, 0.45);
  border-radius: 6px;
  background: rgba(138, 255, 128, 0.09);
  font-size: 10.5px;
  animation: pulse 2.4s ease-in-out infinite;
}
.fleet-text { color: var(--good); font-weight: 700; letter-spacing: 0.04em; }

/* Kill streak: gold multiplier + a bar draining over cfg.combo.window. */
.combo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 7px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 209, 102, 0.55);
  border-radius: 6px;
  background: rgba(255, 209, 102, 0.1);
}
.combo-mult {
  color: var(--credits);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.04em;
  min-width: 34px;
}
.combo-bar { flex: 1; height: 6px; }
.combo-fill { background: linear-gradient(90deg, #ff9e4a, var(--credits)); }

.vitals-panel { min-width: 216px; padding: 9px 12px; }
.vital { display: flex; align-items: center; gap: 8px; margin: 5px 0; }
.vital-label { width: 46px; font-size: 9.5px; color: var(--dim); letter-spacing: 0.09em; }
.vital .bar { flex: 1; height: 9px; }
.vital-num { width: 34px; text-align: right; font-size: 11px; font-variant-numeric: tabular-nums; }

.wave-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 74px;
}
.wave-panel .sub { font-size: 9.5px; color: var(--credits); }

.hud-right {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.board-panel { min-width: 190px; }
.panel-title {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--dim);
  margin-bottom: 6px;
}
#hud-board { margin: 0; padding: 0; list-style: none; counter-reset: rank; }
#hud-board li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  line-height: 1.6;
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
}
#hud-board li::before {
  counter-increment: rank;
  content: counter(rank) ".";
  color: var(--dim);
  width: 14px;
}
#hud-board li .who { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#hud-board li.me .who { color: var(--accent); font-weight: 700; }
#hud-board li.dead .who { opacity: 0.45; text-decoration: line-through; }
#hud-board li .pts { color: var(--credits); }

.hint-panel { font-size: 10.5px; color: var(--dim); line-height: 1.85; text-align: right; }

.hud-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

#toast-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-height: 22px;
}
.toast {
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(12, 18, 30, 0.92);
  border: 1px solid var(--panel-border);
  font-size: 12px;
  animation: toast-in 0.22s ease-out;
  box-shadow: var(--shadow);
}
.toast.warn { border-color: rgba(255, 107, 107, 0.5); color: var(--bad); }
.toast.good { border-color: rgba(138, 255, 128, 0.45); color: var(--good); }
.toast.gold { border-color: rgba(255, 209, 102, 0.5); color: var(--credits); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

#wave-banner {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-shadow: 0 0 26px rgba(90, 215, 255, 0.55);
  animation: banner 2.4s ease-out forwards;
}
@keyframes banner {
  0% { opacity: 0; transform: scale(0.82); }
  14% { opacity: 1; transform: scale(1); }
  76% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.05); }
}

#respawn-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle, rgba(120, 10, 10, 0.2), rgba(0, 0, 0, 0.62));
}
.respawn-box { text-align: center; }
.respawn-title { font-size: 22px; letter-spacing: 0.3em; color: var(--bad); }
.respawn-count { font-size: 84px; font-weight: 800; color: #fff; line-height: 1.1; }
.respawn-sub { color: var(--dim); letter-spacing: 0.2em; font-size: 12px; }

.net-status {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--dim);
  min-height: 13px;
}
.net-status.off { color: var(--bad); }

/* ---- Danger states (B4) ---------------------------------------------- */

/* Red inset vignette while hull is critical — toggled as #hud.critical from
   ui.refresh. Invisible until then, and it pulses rather than sits there so
   the screen reads as "urgent" instead of "tinted". */
#hud::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 130px 18px rgba(255, 70, 70, 0.5);
  opacity: 0;
  transition: opacity 0.35s ease;
}
#hud.critical::after {
  opacity: 1;
  animation: critical-pulse 1.6s ease-in-out infinite;
}
@keyframes critical-pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

/* One-shot shockwave ring when the shield collapses (ui._shieldFlash).
   Only exists while the class is on, so no idle pseudo-element to manage. */
#hud.shield-break::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    circle at 50% 50%,
    transparent 48%,
    rgba(255, 70, 70, 0.55) 63%,
    transparent 75%
  );
  animation: shield-break 0.55s ease-out forwards;
}
@keyframes shield-break {
  from { transform: scale(0.45); opacity: 1; }
  to { transform: scale(1.7); opacity: 0; }
}

/* ===================== Overlays (shop / skills) ===================== */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: rgba(3, 5, 10, 0.72);
  backdrop-filter: blur(3px);
  animation: fade-in 0.16s ease-out;
}
@keyframes fade-in { from { opacity: 0; } }

.overlay-card {
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100vh - 60px);
  overflow: auto;
  background: #0a0f1a;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 16px 18px 12px;
}
.overlay-card.wide { width: min(940px, calc(100vw - 32px)); }

.overlay-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.overlay-head h2 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.24em;
  color: var(--accent);
  flex: 1;
}
.wallet { font-size: 13px; color: var(--credits); font-variant-numeric: tabular-nums; }
.wallet .label { color: var(--dim); font-size: 10px; letter-spacing: 0.1em; margin-right: 6px; }
.close {
  pointer-events: auto;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--panel-border);
  color: var(--text);
  width: 30px;
  height: 30px;
  border-radius: 8px;
  font-size: 13px;
}
.close:hover { background: rgba(255, 107, 107, 0.22); }

.overlay-foot { margin-top: 12px; font-size: 10.5px; color: var(--dim); text-align: center; }

/* shop */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 10px;
}
.shop-group { grid-column: 1 / -1; font-size: 10px; letter-spacing: 0.16em; color: var(--dim); margin-top: 6px; }
.card {
  pointer-events: auto;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 10px 11px;
  background: rgba(255, 255, 255, 0.025);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card.owned { border-color: rgba(138, 255, 128, 0.35); }
.card.maxed { opacity: 0.6; }
.card h3 { margin: 0; font-size: 12.5px; color: var(--text); }
.card .desc { font-size: 10.5px; color: var(--dim); line-height: 1.45; }
.card .next { font-size: 11px; color: var(--good); min-height: 15px; }
.pips { display: flex; gap: 3px; flex-wrap: wrap; }
.pip { width: 9px; height: 9px; border-radius: 2px; background: rgba(255, 255, 255, 0.12); }
.pip.on { background: var(--accent); box-shadow: 0 0 6px rgba(90, 215, 255, 0.7); }

.buy-btn {
  pointer-events: auto;
  cursor: pointer;
  margin-top: 2px;
  padding: 7px 9px;
  border-radius: 8px;
  border: 1px solid rgba(255, 209, 102, 0.4);
  background: rgba(255, 209, 102, 0.1);
  color: var(--credits);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
}
.buy-btn:hover:not(:disabled) { background: rgba(255, 209, 102, 0.24); }
.buy-btn:disabled {
  cursor: not-allowed;
  opacity: 0.4;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--dim);
}

/* skill tree */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.branch { display: flex; flex-direction: column; gap: 9px; }
.branch-name {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-align: center;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--panel-border);
}
.branch .spent { text-align: center; font-size: 9.5px; color: var(--dim); }
.node { order: 0; }
.node.ult { margin-top: 4px; }
.node .card { position: relative; }
.node .requires {
  font-size: 9.5px;
  color: var(--credits);
  opacity: 0.85;
}
.node.locked { opacity: 0.44; }
.node.takeable .card { border-color: rgba(255, 209, 102, 0.55); box-shadow: 0 0 0 1px rgba(255, 209, 102, 0.18); }

@media (max-width: 780px) {
  .skill-grid { grid-template-columns: 1fr; }
  .hud-right .hint-panel { display: none; }
  .hud-top { flex-wrap: wrap; }
}

/* ===================== Join screen ===================== */

#join-screen {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse at 50% 32%, rgba(30, 70, 130, 0.28), transparent 62%),
    var(--bg);
}
.join-card {
  width: min(430px, calc(100vw - 36px));
  text-align: center;
  padding: 30px 26px;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  background: rgba(9, 13, 23, 0.9);
  box-shadow: var(--shadow);
}
.logo {
  margin: 0;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: 0.3em;
  color: #fff;
  text-shadow: 0 0 34px rgba(90, 215, 255, 0.6);
}
.tagline { margin: 8px 0 22px; font-size: 10.5px; color: var(--dim); letter-spacing: 0.06em; }

#join-form { display: flex; flex-direction: column; gap: 10px; }
#join-name, #join-room {
  padding: 11px 13px;
  border-radius: 9px;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-family: var(--mono);
  font-size: 14px;
  text-align: center;
  letter-spacing: 0.12em;
  outline: none;
}
#join-name:focus, #join-room:focus { border-color: var(--accent); }
#join-room { font-size: 12px; color: var(--dim); }

#join-btn {
  margin-top: 4px;
  padding: 12px;
  border-radius: 9px;
  border: 1px solid rgba(90, 215, 255, 0.55);
  background: linear-gradient(180deg, rgba(90, 215, 255, 0.22), rgba(90, 215, 255, 0.1));
  color: var(--accent);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.24em;
  cursor: pointer;
}
#join-btn:hover:not(:disabled) { background: rgba(90, 215, 255, 0.32); }
#join-btn:disabled { opacity: 0.45; cursor: wait; }

.join-status { margin-top: 12px; font-size: 11px; color: var(--dim); min-height: 15px; }
.join-status.err { color: var(--bad); }
.join-status.ok { color: var(--good); }

.join-help { margin-top: 20px; font-size: 10.5px; color: var(--dim); line-height: 2.1; }

@media (max-width: 560px) {
  .logo { font-size: 32px; }
  .hud-right .board-panel { display: none; }
}