:root {
  --bg: #16181f;
  --panel: rgba(24, 26, 34, 0.78);
  --panel-solid: #1f222c;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f4efe6;
  --muted: #a7a39a;
  --accent: #ffb43d;
  --accent-ink: #2a1a00;
  --good: #52e08a;
  --bad: #ff5d6c;
  --radius: 18px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 30%, #2c303c 0%, var(--bg) 70%);
  color: var(--text);
  font-family: 'Rubik', system-ui, sans-serif;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
canvas#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: crosshair; }
body[data-screen='home'] canvas#game, body[data-screen='lobby'] canvas#game { filter: saturate(0.85) brightness(0.7) blur(1.5px); transition: filter 0.6s; }
canvas#game { transition: filter 0.6s; }

[hidden] { display: none !important; }

/* ---------- screens ---------- */
.screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 10;
  overflow-y: auto;
}
.card {
  width: min(460px, 100%);
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 28px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: pop 0.35s cubic-bezier(0.2, 1.4, 0.4, 1);
}
@keyframes pop { from { transform: scale(0.94) translateY(8px); opacity: 0; } }

.logo {
  margin: 0;
  font-size: clamp(56px, 14vw, 84px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  text-align: center;
  background: linear-gradient(180deg, #fff6e0 0%, #ffb43d 60%, #e07b10 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 6px 0 #6b3a06) drop-shadow(0 14px 24px rgba(0, 0, 0, 0.45));
}
.logo span { color: transparent; }
.tagline { margin: 0 0 6px; text-align: center; color: var(--muted); line-height: 1.4; }
.kicker { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); margin: 0; font-size: 14px; line-height: 1.45; }
.center { text-align: center; }
h2 { margin: 0; font-weight: 800; }

/* ---------- controls ---------- */
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.12s, background 0.2s, box-shadow 0.2s;
}
.btn:hover:not(:disabled) { background: rgba(255, 255, 255, 0.12); }
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(180deg, #ffc560, #ff9f1c);
  color: var(--accent-ink);
  border-color: transparent;
  box-shadow: 0 4px 0 #b4660a, 0 10px 24px rgba(255, 160, 30, 0.25);
}
.btn.primary:hover:not(:disabled) { background: linear-gradient(180deg, #ffd27f, #ffab35); }
.btn.primary:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 #b4660a; }
.btn.big { font-size: 18px; padding: 16px; font-weight: 800; }
.btn.ghost { background: transparent; color: var(--muted); }

.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 600; }
input {
  font: inherit;
  color: var(--text);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
  font-size: 16px;
  -webkit-user-select: text;
  user-select: text;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255, 180, 61, 0.2); }

.profile { display: flex; flex-direction: column; gap: 10px; }
.swatches { display: flex; gap: 10px; justify-content: space-between; }
.swatch {
  flex: 1;
  aspect-ratio: 1;
  max-width: 46px;
  border-radius: 50%;
  border: 3px solid transparent;
  background: var(--c);
  cursor: pointer;
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.25);
  transition: transform 0.15s;
}
.swatch:hover { transform: scale(1.08); }
.swatch.on { border-color: #fff; transform: scale(1.12); }

.join { display: flex; gap: 8px; }
.join input { flex: 1; text-transform: uppercase; letter-spacing: 0.25em; font-weight: 800; text-align: center; min-width: 0; }

.help { color: var(--muted); font-size: 14px; }
.help summary { cursor: pointer; font-weight: 600; }
.help ul { padding-left: 18px; margin: 8px 0 0; line-height: 1.7; }
kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 1px 6px;
  font-family: inherit;
  font-size: 12px;
  color: var(--text);
}

/* ---------- lobby ---------- */
.lobby-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.code { font-size: 40px; font-weight: 900; letter-spacing: 0.12em; color: var(--accent); line-height: 1.1; }
#lobby-players { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
#lobby-players li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  font-weight: 600;
}
#lobby-players li i { width: 16px; height: 16px; border-radius: 50%; background: var(--c, transparent); box-shadow: 0 0 12px var(--c, transparent); flex: none; }
#lobby-players li.empty { color: var(--muted); border-style: dashed; background: none; font-weight: 400; }
#lobby-players li.empty i { border: 2px dashed var(--line); }
#lobby-players li.off { opacity: 0.5; }
#lobby-players li em { color: var(--muted); font-style: normal; font-weight: 400; }
#lobby-players .host { margin-left: auto; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }

.segmented { display: grid; grid-template-columns: 1fr 1fr; background: rgba(0, 0, 0, 0.3); border-radius: 14px; padding: 4px; gap: 4px; }
.segmented button {
  font: inherit;
  font-weight: 600;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
}
.segmented button.on { background: rgba(255, 255, 255, 0.12); color: var(--text); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3); }
.segmented button:disabled { cursor: default; }

/* ---------- HUD ---------- */
#hud {
  position: fixed;
  inset: 0 0 auto 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  padding: max(12px, env(safe-area-inset-top)) 16px 0;
  pointer-events: none;
  z-index: 5;
  gap: 8px;
}
#hud > * > * { pointer-events: auto; }
.hud-left { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
#hud-mission, #hud-lives, #hud-enemies, .sb-row {
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 600;
}
#hud-mission { display: flex; flex-direction: column; line-height: 1.15; }
#hud-mission b { font-weight: 900; font-size: 18px; }
#hud-mission span { font-size: 12px; color: var(--muted); }
#hud-lives:empty, #hud-enemies:empty { display: none; }
#hud-lives { display: flex; align-items: center; gap: 6px; font-size: 18px; font-weight: 800; }
.tank-ico { width: 22px; height: 14px; border-radius: 4px; background: #3d7bff; position: relative; display: inline-block; }
.tank-ico::after { content: ''; position: absolute; left: 6px; top: -5px; width: 10px; height: 8px; border-radius: 5px 5px 2px 2px; background: #6fa0ff; }
.hud-center { display: flex; flex-direction: column; align-items: center; gap: 6px; }
#hud-enemies { font-size: 15px; }
#scoreboard { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.sb-row { display: flex; align-items: center; gap: 8px; padding: 6px 10px; }
.sb-row i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); }
.sb-row b { font-weight: 900; }
.hud-right { display: flex; justify-content: flex-end; gap: 8px; align-items: center; }
#hud-ping { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}
.icon-btn.off { color: var(--muted); }

/* name tags */
#names { position: fixed; inset: 0; pointer-events: none; z-index: 4; }
.tag {
  position: absolute;
  left: 0; top: 0;
  font-size: 12px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(20, 20, 26, 0.65);
  border: 2px solid var(--c);
  color: #fff;
  white-space: nowrap;
  will-change: transform;
}

/* bonus: HUD chips and floating labels */
#hud-buffs { display: flex; gap: 6px; flex-wrap: wrap; }
#hud-buffs:empty { display: none; }
.buff {
  font-size: 13px;
  font-weight: 800;
  padding: 6px 10px;
  border-radius: 999px;
  color: #1b1d24;
  background: var(--c);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.35), 0 0 14px color-mix(in srgb, var(--c) 60%, transparent);
  animation: buff-in 0.35s cubic-bezier(0.3, 1.6, 0.5, 1);
}
@keyframes buff-in { from { transform: scale(0.4); opacity: 0; } }
#floaters { position: fixed; inset: 0; pointer-events: none; z-index: 4; overflow: hidden; }
.floater {
  position: absolute;
  transform: translate(-50%, -100%);
  font-weight: 900;
  font-size: 20px;
  color: #fff;
  white-space: nowrap;
  -webkit-text-stroke: 1px rgba(0, 0, 0, 0.35);
  text-shadow: 0 2px 0 var(--c), 0 3px 10px rgba(0, 0, 0, 0.6);
  animation: float-up 1.4s ease-out forwards;
}
@keyframes float-up {
  0% { transform: translate(-50%, -60%) scale(0.5); opacity: 0; }
  15% { transform: translate(-50%, -100%) scale(1.15); opacity: 1; }
  70% { opacity: 1; }
  100% { transform: translate(-50%, -260%) scale(1); opacity: 0; }
}

/* boss health bar */
#boss-bar {
  position: fixed;
  left: 50%;
  top: max(70px, calc(env(safe-area-inset-top) + 62px));
  transform: translateX(-50%);
  width: min(440px, calc(100vw - 32px));
  z-index: 5;
  pointer-events: none;
  padding: 8px 14px 10px;
  border-radius: 16px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  animation: banner-drop 0.5s cubic-bezier(0.2, 1.5, 0.4, 1);
}
body.demo #boss-bar { top: 18px; }
@keyframes banner-drop { from { transform: translate(-50%, -30px); opacity: 0; } }
.boss-top { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; margin-bottom: 6px; }
.boss-top b { font-weight: 900; letter-spacing: 0.2em; text-transform: uppercase; color: #f2c14e; }
.boss-top b::before { content: '♛ '; }
.boss-top span { font-weight: 800; color: var(--muted); font-variant-numeric: tabular-nums; }
.boss-track { height: 12px; border-radius: 999px; background: rgba(0, 0, 0, 0.45); overflow: hidden; box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.6); }
#boss-fill {
  height: 100%;
  width: 100%;
  border-radius: 999px;
  background: linear-gradient(180deg, #ff7a6e, #b8323a);
  box-shadow: 0 0 12px rgba(255, 90, 70, 0.6);
  transition: width 0.35s cubic-bezier(0.3, 1.4, 0.5, 1);
}
#boss-bar.rage { border-color: rgba(255, 70, 50, 0.6); animation: boss-rage 0.6s ease-in-out infinite alternate; }
#boss-bar.rage #boss-fill { background: linear-gradient(180deg, #ffb070, #ff3b2f); }
@keyframes boss-rage { to { box-shadow: 0 0 26px rgba(255, 60, 40, 0.55); } }
#banner.boss .b-kicker { color: #ff5d4c; }
#banner.boss .b-title { color: #f2c14e; }

/* banner */
#banner {
  position: fixed;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 6;
  pointer-events: none;
  padding: 26px 46px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(30, 32, 42, 0.85), rgba(20, 22, 30, 0.85));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  animation: banner 0.5s cubic-bezier(0.2, 1.5, 0.4, 1);
  max-width: calc(100vw - 32px);
}
@keyframes banner { from { transform: translate(-50%, -50%) scale(0.6); opacity: 0; } }
.b-kicker { font-size: 14px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent); font-weight: 800; }
.b-title { font-size: clamp(32px, 7vw, 56px); font-weight: 900; letter-spacing: -0.02em; line-height: 1.05; margin: 4px 0; }
.b-sub { color: var(--muted); font-weight: 600; }
#banner.good .b-kicker { color: var(--good); }
#banner.bad .b-kicker { color: var(--bad); }
.b-tanks { display: flex; gap: 8px; justify-content: center; margin-top: 12px; flex-wrap: wrap; }
.b-tanks span {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; padding: 4px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.06); color: var(--text);
}
.b-tanks span::before { content: ''; width: 10px; height: 10px; border-radius: 50%; background: var(--c); }

/* results */
.results { width: min(720px, 100%); }
.results table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.results th, .results td { padding: 8px 6px; text-align: center; border-bottom: 1px solid var(--line); }
.results td:first-child, .results th:first-child { text-align: left; white-space: nowrap; }
.results th { color: var(--muted); font-weight: 600; font-size: 13px; }
#results-body { overflow-x: auto; }
.dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: var(--c); margin-right: 8px; vertical-align: -1px; }
th .dot { margin: 0; }

.menu { width: min(340px, 100%); }
#menu { background: rgba(10, 10, 14, 0.4); }

/* toast */
#toast {
  position: fixed;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  transform: translate(-50%, 20px);
  opacity: 0;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  padding: 12px 18px;
  border-radius: 14px;
  font-weight: 600;
  transition: 0.25s;
  z-index: 50;
  pointer-events: none;
  max-width: calc(100vw - 32px);
  text-align: center;
}
#toast.on { opacity: 1; transform: translate(-50%, 0); }

/* touch */
#mine-btn { display: none; }
body.touch[data-screen='game'] #mine-btn {
  display: block;
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  width: 74px; height: 74px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: rgba(244, 197, 66, 0.8);
  color: #2a1a00;
  font: 800 13px Rubik, sans-serif;
  z-index: 7;
}
.stick {
  display: none;
  position: fixed;
  width: 110px; height: 110px;
  margin: -55px 0 0 -55px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
  z-index: 7;
  pointer-events: none;
}
.stick .knob {
  position: absolute; left: 50%; top: 50%;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
}

@media (max-width: 640px) {
  .card { padding: 20px; border-radius: 22px; }
  #hud { grid-template-columns: 1fr auto; }
  .hud-center { grid-column: 1 / -1; grid-row: 2; }
  #hud-mission span { display: none; }
  .code { font-size: 32px; }
  #banner { padding: 18px 22px; }
}

/* iteration stamp + journal */
.hero { position: relative; }
.stamp {
  position: absolute;
  top: 18px;
  right: -14px;
  transform: rotate(9deg);
  border: 3px solid #e2453c;
  color: #ff6a5e;
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 8px;
  background: rgba(40, 10, 10, 0.55);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}
.stamp.small { position: static; transform: rotate(-4deg); font-size: 11px; padding: 2px 7px; border-width: 2px; flex: none; }
.journal { width: min(560px, 100%); max-height: calc(100dvh - 32px); }
#journal-list { overflow-y: auto; display: flex; flex-direction: column; gap: 12px; min-height: 0; flex: 1; padding-right: 4px; }
#journal-list article { background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
#journal-list header { display: flex; align-items: center; gap: 10px; }
#journal-list header time { margin-left: auto; color: var(--muted); font-size: 12px; }
#journal-list ul { margin: 10px 0 0; padding-left: 18px; color: #ddd7cc; line-height: 1.5; font-size: 14px; }

/* demo mode (videos) */
body.demo #toast, body.demo #names, body.demo #mine-btn { display: none !important; }
body.demo canvas#game { cursor: none; }
#demo-caption {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  z-index: 8;
  text-align: center;
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 22px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: calc(100vw - 32px);
}
#demo-caption b { font-size: 24px; font-weight: 900; }
#demo-caption span { color: var(--muted); font-weight: 600; }

/* feedback */
#btn-feedback {
  position: fixed;
  left: max(16px, env(safe-area-inset-left));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 20;
  font: 700 14px Rubik, sans-serif;
  color: var(--text);
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  cursor: pointer;
}
#btn-feedback:hover { background: rgba(255, 255, 255, 0.12); }
body.demo #btn-feedback { display: none; }
body.touch[data-screen='game'] #btn-feedback { bottom: auto; top: 64px; }
#feedback { z-index: 30; background: rgba(10, 10, 14, 0.45); }
.feedback { width: min(720px, 100%); max-height: calc(100dvh - 32px); overflow-y: auto; }
.feedback > * { flex-shrink: 0; }
#fb-text { min-height: 96px; }
.segmented.four { grid-template-columns: repeat(4, 1fr); }
.fb-shot { display: flex; flex-direction: column; gap: 6px; }
#fb-canvas { max-width: 100%; max-height: 40vh; width: auto; height: auto; align-self: center; border-radius: 12px; border: 1px solid var(--line); cursor: crosshair; touch-action: none; background: #111; }
.fb-tools { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.fb-tools .muted { font-size: 13px; }
.btn.small { padding: 6px 10px; font-size: 13px; }
.check { display: flex; gap: 8px; align-items: center; font-size: 14px; color: var(--muted); }
textarea {
  font: inherit;
  color: var(--text);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  resize: vertical;
  outline: none;
  font-size: 16px;
  -webkit-user-select: text;
  user-select: text;
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255, 180, 61, 0.2); }
.file { display: flex; gap: 8px; align-items: center; cursor: pointer; padding: 10px 14px; border: 1px dashed var(--line); border-radius: 12px; color: var(--muted); font-weight: 600; }
.file input { display: none; }
#fb-context { max-height: 220px; overflow: auto; font-size: 11px; background: rgba(0, 0, 0, 0.3); padding: 10px; border-radius: 10px; -webkit-user-select: text; user-select: text; }
.fb-actions { display: flex; justify-content: flex-end; gap: 8px; }