/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0e1116;
  --surface: #161b22;
  --surface-2: #1c222c;
  --border: #242b36;
  --text: #e6edf3;
  --text-dim: #8b95a5;
  --text-mute: #5c6573;
  --accent: #22c997;       /* emerald */
  --accent-soft: rgba(34, 201, 151, 0.15);
  --accent-strong: #2bd9a6;
  --warn: #f0b429;
  --danger: #e5484d;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

html, body {
  height: 100%;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input  { font: inherit; }
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; }

/* ---------- Layout ---------- */
.app {
  height: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 24px 16px;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 16px;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(34, 201, 151, 0.55);
}
.brand h1 {
  font-size: 18px;
  letter-spacing: 0.02em;
  font-weight: 700;
}

.player {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 6px 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.player__label {
  color: var(--text-dim);
  font-size: 12px;
}
.player__name {
  color: var(--text);
  font-weight: 600;
  max-width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player__change {
  background: var(--accent);
  color: #052218;
  font-weight: 600;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  transition: background 0.15s ease;
}
.player__change:hover { background: var(--accent-strong); }

/* ---------- HUD ---------- */
.hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.stat__label {
  color: var(--text-dim);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.stat__value {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-weight: 700;
  font-size: 22px;
  font-variant-numeric: tabular-nums;
}
.stat--bump { animation: bump 0.3s ease; }
@keyframes bump { 0% { transform: scale(1); } 40% { transform: scale(1.06); } 100% { transform: scale(1); } }

/* ---------- Stage ---------- */
.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 20px;
  min-height: 0;
}

.canvas-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
canvas {
  width: auto;
  height: min(82vh, 100%);
  aspect-ratio: 640 / 720;
  display: block;
  border-radius: 8px;
  background: #050810;
  max-width: 100%;
}

/* ---------- Overlays ---------- */
.overlay {
  position: absolute;
  inset: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 14, 19, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 8px;
  animation: fadeIn 0.18s ease;
}
.overlay.hidden { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.overlay__card {
  text-align: center;
  padding: 24px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 360px;
}
.overlay__card h2 {
  font-size: 22px;
  margin-bottom: 6px;
}
.overlay__card p {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 16px;
}
.overlay__card--over { border-color: rgba(229, 72, 77, 0.35); }
.overlay__stats {
  display: flex;
  gap: 28px;
  justify-content: center;
  margin: 12px 0 18px;
}
.overlay__stats div { display: flex; flex-direction: column; align-items: center; }
.overlay__stats span {
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.overlay__stats strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}
.kbd {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  margin: 0 2px;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
}

/* ---------- Sidebar ---------- */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}
.leaderboard,
.controls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.leaderboard__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.leaderboard__head h3,
.controls h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  font-weight: 600;
}
.leaderboard__list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.leaderboard__list li {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface-2);
}
.leaderboard__list li.you { border: 1px solid var(--accent); background: var(--accent-soft); }
.leaderboard__empty {
  display: block !important;
  text-align: center !important;
  color: var(--text-mute);
  background: transparent !important;
  padding: 14px !important;
  font-style: italic;
}
.lb-rank {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  color: var(--text-mute);
  text-align: center;
}
.leaderboard__list li:nth-child(1) .lb-rank { color: var(--warn); }
.lb-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lb-score {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* Controls list */
.controls ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}
.controls li {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}
.controls li em {
  margin-left: auto;
  font-style: normal;
  font-size: 12px;
}
.key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 6px;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
}
.key--wide { min-width: 58px; }

/* ---------- Buttons / links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn--primary {
  background: var(--accent);
  color: #052218;
}
.btn--primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.link {
  color: var(--text-dim);
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}
.link:hover { color: var(--text); background: var(--surface-2); }

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal.hidden { display: none; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 14, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal__card {
  position: relative;
  width: min(380px, 92vw);
  padding: 28px 28px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}
.modal__card h2 { font-size: 20px; margin-bottom: 6px; }
.modal__card p { color: var(--text-dim); margin-bottom: 18px; font-size: 13px; }
.modal__card form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.modal__card input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  text-align: center;
  outline: none;
  transition: border-color 0.15s ease;
}
.modal__card input:focus { border-color: var(--accent); }
.modal__cancel { margin-top: 8px; }
.modal__cancel.hidden { display: none; }

/* ---------- Touch controls ---------- */
.touch-controls { display: none; }

.touch-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 22px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 0.06s ease, background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.touch-btn:active {
  transform: scale(0.94);
  background: var(--surface-2);
  border-color: var(--accent);
  color: var(--accent);
}
.touch-btn--pause {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 20px;
  background: var(--accent);
  color: #052218;
  border-color: transparent;
}
.touch-btn--pause:active {
  background: var(--accent-strong);
  color: #052218;
  border-color: transparent;
  transform: scale(0.94);
}

/* Invaders: three buttons in a row — Left, Fire, Right */
.touch-fire-row {
  display: grid;
  grid-template-columns: 64px 64px 64px;
  gap: 8px;
}
.touch-btn--move {
  width: 64px;
  height: 64px;
}
.touch-btn--fire {
  width: 64px;
  height: 64px;
  background: var(--accent);
  color: #052218;
  border-color: transparent;
  font-size: 26px;
}
.touch-btn--fire:active {
  background: var(--accent-strong);
  color: #052218;
  border-color: transparent;
}

/* ---------- Responsive (desktop only) ---------- */
@media (max-width: 900px) {
  html:not(.is-touch) .stage { grid-template-columns: 1fr; }
  html:not(.is-touch) .sidebar { flex-direction: row; }
  html:not(.is-touch) .sidebar > * { flex: 1; }
  html:not(.is-touch) canvas { height: min(70vh, 92vw); }
}
@media (max-width: 600px) {
  html:not(.is-touch) .app { padding: 14px; }
  html:not(.is-touch) .hud { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  html:not(.is-touch) .stat { padding: 10px 12px; }
  html:not(.is-touch) .stat__value { font-size: 18px; }
  html:not(.is-touch) .sidebar { flex-direction: column; }
}

/* =====================================================================
 * Touch device layout
 * ===================================================================== */
html.is-touch,
html.is-touch body {
  height: auto;
  min-height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}

html.is-touch .app {
  height: auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 12px 12px calc(12px + env(safe-area-inset-bottom));
  grid-template-rows: auto auto auto auto auto;
  gap: 12px;
}

html.is-touch .topbar { flex-wrap: wrap; gap: 8px; }
html.is-touch .brand h1 { font-size: 16px; }
html.is-touch .player { padding: 4px 4px 4px 10px; }
html.is-touch .player__name { max-width: 90px; font-size: 13px; }
html.is-touch .player__change { padding: 5px 10px; font-size: 11px; }

html.is-touch .hud { gap: 8px; }
html.is-touch .stat { padding: 8px 12px; }
html.is-touch .stat__label { font-size: 11px; }
html.is-touch .stat__value { font-size: 18px; }

html.is-touch .stage {
  grid-template-columns: 1fr;
  gap: 10px;
  min-height: 0;
}

html.is-touch .canvas-wrap {
  padding: 8px;
  border-radius: 10px;
}

html.is-touch canvas {
  height: auto;
  width: min(94vw, 56vh, 520px);
  width: min(94vw, 56dvh, 520px);
}

html.is-touch .touch-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 4px 0;
}

html.is-touch .controls { display: none; }

html.is-touch .sidebar { flex-direction: column; gap: 10px; }
html.is-touch .leaderboard { padding: 12px 14px; }
html.is-touch .leaderboard__list li { padding: 8px 10px; }

@media (max-width: 380px) {
  html.is-touch .touch-fire-row {
    grid-template-columns: 54px 54px 54px;
    gap: 6px;
  }
  html.is-touch .touch-btn--move,
  html.is-touch .touch-btn--fire { width: 54px; height: 54px; font-size: 20px; }
  html.is-touch .touch-btn--pause { width: 48px; height: 48px; font-size: 18px; }
  html.is-touch .touch-controls { gap: 8px; }
  html.is-touch canvas {
    width: min(94vw, 52vh, 520px);
    width: min(94vw, 52dvh, 520px);
  }
}

@media (max-height: 520px) and (orientation: landscape) {
  html.is-touch .app { padding: 8px; gap: 8px; }
  html.is-touch .stage {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
  html.is-touch .touch-controls {
    flex-direction: column-reverse;
    grid-column: 2;
    padding: 0;
  }
  html.is-touch canvas {
    height: 88vh;
    height: 88dvh;
    width: auto;
  }
  html.is-touch .sidebar { display: none; }
}

/* ---------- Signature (subtitle + footer) ---------- */
.brand-sub {
  color: var(--text-dim);
  font-size: 12px;
  margin-left: 4px;
  border-left: 1px solid var(--border);
  padding-left: 12px;
}
.footer {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-mute);
  font-size: 12px;
  text-align: center;
}
@media (max-width: 600px) {
  .brand-sub { display: none; }
}