:root {
  --bg: #05070c;
  --panel: #0c1220;
  --border: #1e2a44;
  --text: #d6e4ff;
  --dim: #6b7c99;
  --accent: #33ff99;
  --accent-2: #4da3ff;
  --warn: #ff8a3d;
  --danger: #ff4d6d;
  --font: "SF Mono", "Fira Code", "Cascadia Code", ui-monospace, monospace;
  --display: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html, body {
  height: 100%;
  width: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--display);
}

body {
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(51, 255, 153, 0.06), transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(77, 163, 255, 0.06), transparent 50%),
    linear-gradient(180deg, #05070c 0%, #080c16 100%);
  min-height: 100vh;
  min-height: 100dvh;
}

#app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* Immersive play mode: canvas owns the whole window */
body.in-game {
  overflow: hidden;
  background: #000;
  background-image: none;
}

body.in-game #app {
  min-height: 100%;
  height: 100vh;
  height: 100dvh;
}

body.in-game .top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  background: linear-gradient(180deg, rgba(5, 7, 12, 0.85), rgba(5, 7, 12, 0));
  border-bottom: none;
  pointer-events: none;
}

body.in-game .top-bar .logo,
body.in-game .top-bar .hud-stats,
body.in-game .top-bar button {
  pointer-events: auto;
}

body.in-game .footer {
  display: none;
}

body.in-game main {
  position: fixed;
  inset: 0;
  padding: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.top-bar, .footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font);
  font-size: 0.85rem;
}

.footer {
  border-bottom: none;
  border-top: 1px solid var(--border);
  margin-top: auto;
  color: var(--dim);
}

.logo {
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--accent);
}

.logo .dim { color: var(--dim); letter-spacing: 0.1em; }

.hud-stats {
  display: flex;
  gap: 1rem;
  align-items: center;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.screen { width: 100%; max-width: 720px; }
.screen.game-screen {
  max-width: none;
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.hidden { display: none !important; }

.panel {
  background: linear-gradient(160deg, rgba(12, 18, 32, 0.95), rgba(8, 12, 22, 0.98));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.panel.wide { max-width: 560px; margin: 0 auto; }

h1 {
  font-family: var(--font);
  letter-spacing: 0.12em;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.tagline {
  color: var(--dim);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--dim);
}

.field input {
  background: #070b14;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(51, 255, 153, 0.12);
}

.field input.code {
  letter-spacing: 0.4em;
  text-transform: uppercase;
  text-align: center;
  font-size: 1.4rem;
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.5rem 0 1rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #121a2c;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  padding: 0.7rem 1.2rem;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.1s, background 0.15s, border-color 0.15s;
}

.btn:hover:not(:disabled) {
  border-color: var(--accent-2);
  background: #172238;
}

.btn:active:not(:disabled) { transform: translateY(1px); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn.primary {
  background: linear-gradient(180deg, #1d4d38, #143528);
  border-color: #2a8f62;
  color: #b8ffdb;
}

.btn.primary:hover:not(:disabled) {
  background: linear-gradient(180deg, #246347, #174232);
  border-color: var(--accent);
}

.btn.ghost {
  background: transparent;
}

.btn.small {
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
}

.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--dim);
  font-size: 0.8rem;
  margin: 1.25rem 0;
}

.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.error {
  color: var(--danger);
  min-height: 1.25rem;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* High scores */
.highscores {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.hs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.highscores h3,
.gameover-hs h3 {
  font-family: var(--font);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text);
  margin: 0;
}

.hs-tabs {
  display: flex;
  gap: 0.35rem;
}

.hs-tab {
  appearance: none;
  border: 1px solid var(--border);
  background: #0a101c;
  color: var(--dim);
  font-family: var(--font);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.hs-tab:hover {
  border-color: var(--accent-2);
  color: var(--text);
}

.hs-tab.active {
  color: #b8ffdb;
  border-color: #2a8f62;
  background: rgba(51, 255, 153, 0.1);
}

.hs-list {
  list-style: none;
  display: grid;
  gap: 0.35rem;
  max-height: 220px;
  overflow-y: auto;
  margin: 0;
  padding: 0;
}

.hs-list.compact {
  max-height: 140px;
}

.hs-list li {
  display: grid;
  grid-template-columns: 1.6rem 1fr auto;
  gap: 0.5rem;
  align-items: baseline;
  font-family: var(--font);
  font-size: 0.8rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  background: #0a101c;
  border: 1px solid transparent;
}

.hs-list li.you {
  border-color: rgba(51, 255, 153, 0.35);
  background: rgba(51, 255, 153, 0.06);
}

.hs-rank {
  color: var(--dim);
  font-size: 0.75rem;
}

.hs-name {
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.hs-name .meta {
  color: var(--dim);
  font-size: 0.7rem;
  margin-left: 0.35rem;
}

.hs-score {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.hs-empty {
  font-size: 0.85rem;
  margin: 0.25rem 0 0;
}

.gameover-hs {
  width: min(520px, 92vw);
  margin: 0.25rem 0 0.5rem;
  text-align: left;
}

.gameover-hs h3 {
  text-align: center;
  margin-bottom: 0.65rem;
  letter-spacing: 0.2em;
}

.gameover-hs-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.hs-col-label {
  font-family: var(--font);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 0.35rem;
}

@media (max-width: 520px) {
  .gameover-hs-cols {
    grid-template-columns: 1fr;
  }
}

.controls-help {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 0.85rem;
}

.controls-help h3 {
  font-family: var(--font);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  margin-bottom: 0.6rem;
  color: var(--text);
}

.controls-help ul {
  list-style: none;
  display: grid;
  gap: 0.35rem;
}

kbd {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.75rem;
  border: 1px solid var(--border);
  background: #0a101c;
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  margin-right: 0.15rem;
  color: var(--text);
}

.invite-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #070b14;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin: 1rem 0 1.5rem;
}

.invite-code {
  font-family: var(--font);
  font-size: 1.75rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  flex: 1;
}

.player-list {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.player-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: #0a101c;
  border: 1px solid var(--border);
  font-family: var(--font);
}

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-shadow: 0 0 10px currentColor;
}

.badge {
  margin-left: auto;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--warn);
  border: 1px solid rgba(255, 138, 61, 0.35);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.color-picker {
  margin: 0 0 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: #0a101c;
  border: 1px solid var(--border);
}

.color-picker-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.color-picker-label small {
  font-size: 0.75rem;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.color-swatch-btn {
  appearance: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: transform 0.12s, box-shadow 0.12s, border-color 0.12s, opacity 0.12s;
  box-shadow: 0 0 12px color-mix(in srgb, var(--swatch) 45%, transparent);
  background: var(--swatch);
}

.color-swatch-btn:hover:not(:disabled) {
  transform: scale(1.08);
  border-color: rgba(255, 255, 255, 0.45);
}

.color-swatch-btn.selected {
  border-color: #fff;
  box-shadow:
    0 0 0 2px var(--bg),
    0 0 0 4px var(--swatch),
    0 0 16px color-mix(in srgb, var(--swatch) 55%, transparent);
}

.color-swatch-btn:disabled {
  opacity: 0.28;
  cursor: not-allowed;
  box-shadow: none;
  filter: grayscale(0.35);
}

.color-swatch-btn.taken:not(.selected)::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 70%;
  height: 2px;
  background: rgba(5, 7, 12, 0.85);
  transform: rotate(-35deg);
  border-radius: 2px;
}

.options {
  margin-bottom: 1.25rem;
  padding: 1rem;
  border-radius: 12px;
  background: #0a101c;
  border: 1px solid var(--border);
}

.toggle {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  cursor: pointer;
  user-select: none;
}

.toggle input { display: none; }

.toggle-ui {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: #1a2438;
  border: 1px solid var(--border);
  position: relative;
  flex-shrink: 0;
  transition: background 0.15s;
  margin-top: 2px;
}

.toggle-ui::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--dim);
  transition: transform 0.15s, background 0.15s;
}

.toggle input:checked + .toggle-ui {
  background: rgba(255, 77, 109, 0.25);
  border-color: var(--danger);
}

.toggle input:checked + .toggle-ui::after {
  transform: translateX(20px);
  background: var(--danger);
}

.toggle input:disabled + .toggle-ui {
  opacity: 0.5;
}

.toggle-label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.95rem;
}

.toggle-label small {
  color: var(--dim);
  font-size: 0.8rem;
}

.center { text-align: center; }
.dim { color: var(--dim); }

.pill {
  font-family: var(--font);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  text-transform: uppercase;
}

.pill.on {
  color: var(--danger);
  border-color: rgba(255, 77, 109, 0.5);
}

.pill.ok {
  color: var(--accent);
  border-color: rgba(51, 255, 153, 0.4);
}

.mute-btn {
  appearance: none;
  cursor: pointer;
  background: transparent;
  font: inherit;
  color: inherit;
  pointer-events: auto;
}

.mute-btn:hover {
  border-color: var(--accent-2);
  color: var(--text);
}

.mute-btn.off {
  color: var(--dim);
  border-color: var(--border);
}

.foot-link {
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px dotted var(--border);
}

.foot-link:hover {
  color: var(--accent);
}

/* Stage letterboxes the 16:9 world inside the viewport */
.game-stage {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

/* Game canvas — sized by JS to fill viewport while keeping 1280×720 aspect */
#game {
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
  border: none;
  border-radius: 0;
  box-shadow: none;
  image-rendering: auto;
  /* crisp upscale on large monitors */
  image-rendering: -webkit-optimize-contrast;
}

.scoreboard {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  pointer-events: none;
  font-family: var(--font);
  font-size: 0.8rem;
  z-index: 5;
}

body.in-game .scoreboard {
  top: 52px; /* clear the floating HUD bar */
}

.score-card {
  background: rgba(5, 7, 12, 0.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
  backdrop-filter: blur(4px);
}

.score-card .name { font-weight: 700; }
.score-card .meta { color: var(--dim); font-size: 0.75rem; }

/* Status flash — top of playfield, not center (center blocks ships/asteroids) */
.banner {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  font-family: var(--font);
  font-size: clamp(0.95rem, 2.2vw, 1.35rem);
  letter-spacing: 0.18em;
  color: var(--accent);
  text-shadow: 0 0 16px rgba(51, 255, 153, 0.45);
  pointer-events: none;
  white-space: nowrap;
  animation: pulse 1.2s ease-in-out infinite;
  z-index: 5;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(5, 7, 12, 0.72);
  border: 1px solid rgba(51, 255, 153, 0.25);
  backdrop-filter: blur(4px);
}

body.in-game .banner {
  top: 56px; /* clear floating top bar */
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.overlay-panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: rgba(5, 7, 12, 0.78);
  border-radius: 0;
  backdrop-filter: blur(3px);
  z-index: 6;
}

.overlay-panel h2 {
  font-family: var(--font);
  letter-spacing: 0.2em;
  color: var(--danger);
}

/* Spectating / rejoin — lighter so the fight stays visible underneath */
.rejoin-panel {
  background: rgba(5, 7, 12, 0.55);
  backdrop-filter: blur(2px);
  gap: 0.75rem;
  padding: 1.5rem;
}

.rejoin-panel h2 {
  color: var(--warn);
  font-size: clamp(1.1rem, 3vw, 1.6rem);
}

.rejoin-panel p {
  font-family: var(--font);
  font-size: 0.9rem;
  max-width: 28rem;
  text-align: center;
  line-height: 1.45;
}

.rejoin-note {
  margin-bottom: 0.25rem;
}

@media (max-width: 640px) {
  .panel { padding: 1.25rem; }
  .invite-code { font-size: 1.3rem; letter-spacing: 0.25em; }
}