:root {
  --bg: #050b14;
  --panel: rgba(9, 20, 35, 0.9);
  --line: #1d3a55;
  --text: #e6eef7;
  --muted: #8fa3b8;
  --teal: #2dd4bf;
  --amber: #f5b041;
  --coral: #ef5d50;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }

/* HUD */
#hud {
  position: fixed; inset: 0 0 auto 0;
  padding: 14px 20px;
  pointer-events: none;
  display: flex; flex-direction: column; gap: 10px;
  background: linear-gradient(rgba(5, 11, 20, 0.75), transparent);
}
.hud-row { display: flex; justify-content: space-between; align-items: center; }
.stat { display: flex; flex-direction: column; flex: 1; }
.stat.center { align-items: center; }
.stat.right { align-items: flex-end; }
.label { font-size: clamp(11px, 0.7vw, 15px); letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }
.value { font-size: clamp(26px, 1.8vw, 40px); font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.value.amber { color: var(--amber); }

#lives { display: flex; gap: 8px; min-height: 18px; }
#lives i {
  width: 16px; height: 18px; background: var(--teal);
  clip-path: polygon(50% 0, 100% 100%, 50% 75%, 0 100%);
}
.shield { display: flex; align-items: center; gap: 10px; }
.meter { width: 120px; height: 8px; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; background: rgba(9, 20, 35, 0.7); }
#shield-fill { height: 100%; width: 100%; background: var(--teal); transition: background 0.2s; }
#shield-fill.charging { background: var(--muted); }

/* Wave banner */
#banner {
  position: fixed; left: 0; right: 0; top: 38%;
  text-align: center; pointer-events: none;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.4s, transform 0.4s;
}
#banner.show { opacity: 1; transform: none; }
#banner-title { font-size: clamp(30px, 6vw, 56px); font-weight: 700; letter-spacing: 0.12em; text-shadow: 0 0 24px rgba(45, 212, 191, 0.55); }
#banner-sub { font-size: clamp(13px, 2vw, 18px); letter-spacing: 0.3em; text-transform: uppercase; color: var(--amber); margin-top: 6px; }

/* Modal */
.backdrop {
  position: fixed; inset: 0; display: none;
  align-items: center; justify-content: center;
  padding: 16px;
  background: rgba(3, 8, 15, 0.62);
  backdrop-filter: blur(5px);
}
.backdrop.open { display: flex; }
.modal {
  width: min(460px, 100%);
  padding: 30px 30px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: 12px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6);
  text-align: center;
  animation: pop 0.25s ease-out;
}
@keyframes pop { from { opacity: 0; transform: translateY(12px) scale(0.97); } }
.kicker { font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase; color: var(--amber); min-height: 16px; }
.modal h1 { margin: 6px 0 16px; font-size: clamp(32px, 8vw, 46px); letter-spacing: 0.14em; line-height: 1.05; }
#m-body { color: var(--muted); font-size: 15px; line-height: 1.55; margin-bottom: 22px; }
#m-body strong { color: var(--text); }
#m-body .big { display: block; font-size: 38px; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; }
#m-body .new { color: var(--amber); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; }
.keys { display: grid; grid-template-columns: auto 1fr; gap: 8px 14px; text-align: left; margin: 14px auto 0; width: fit-content; }
.keys kbd {
  font: inherit; font-size: 13px; color: var(--text);
  padding: 2px 9px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px;
  background: rgba(29, 58, 85, 0.35); white-space: nowrap; justify-self: end;
}
#m-btn {
  font: inherit; font-weight: 700; font-size: 16px; letter-spacing: 0.16em; text-transform: uppercase;
  color: #04121a; background: var(--teal);
  border: 0; border-radius: 8px; padding: 13px 34px; cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
  box-shadow: 0 6px 22px rgba(45, 212, 191, 0.3);
}
#m-btn:hover, #m-btn:focus-visible { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(45, 212, 191, 0.45); outline: none; }

#m-classic {
  display: block; width: fit-content; margin: 12px auto 0; padding: 10px 22px;
  font-weight: 600; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--amber); text-decoration: none;
  border: 1px solid var(--amber); border-radius: 8px;
  transition: background 0.12s, color 0.12s;
}
#m-classic[hidden] { display: none; }
#m-classic:hover, #m-classic:focus-visible { background: var(--amber); color: #04121a; outline: none; }
#m-links { display: flex; justify-content: center; gap: 22px; margin-top: 16px; }
#m-links[hidden] { display: none; }
#m-links button {
  padding: 4px 2px;
  font: inherit; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); background: none; border: 0; border-bottom: 1px solid var(--line); cursor: pointer;
}
#m-links button:hover, #m-links button:focus-visible { color: var(--teal); border-color: var(--teal); outline: none; }
.scores { width: 100%; margin-top: 14px; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.scores th { font-size: 11px; font-weight: 400; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); padding: 0 8px 6px; border-bottom: 1px solid var(--line); }
.scores td { padding: 5px 8px; color: var(--text); border-bottom: 1px solid rgba(29, 58, 85, 0.45); }
.scores th:first-child, .scores td:first-child { text-align: left; color: var(--muted); width: 2.2em; }
.scores th:nth-child(2), .scores td:nth-child(2) { text-align: left; letter-spacing: 0.2em; }
.scores th:nth-child(n+3), .scores td:nth-child(n+3) { text-align: right; }
.scores tr.mark td { color: var(--amber); font-weight: 700; background: rgba(245, 176, 65, 0.1); }
.empty { margin: 14px 0 0; }
.entry { display: block; margin-top: 16px; font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; }
.entry input {
  display: block; width: 5.2em; margin: 8px auto 0; padding: 6px 0 6px 0.4em;
  font: inherit; font-size: 30px; font-weight: 700; letter-spacing: 0.4em; text-align: center; text-transform: uppercase;
  color: var(--amber); background: rgba(29, 58, 85, 0.35); caret-color: var(--teal);
  border: 1px solid var(--line); border-bottom: 2px solid var(--teal); border-radius: 6px;
  -webkit-user-select: text; user-select: text;
}
.entry input:focus { outline: none; border-color: var(--teal); }
.about { text-align: left; font-size: 14px; max-height: 52vh; overflow-y: auto; padding-right: 6px; }
.about h2 { margin: 16px 0 4px; font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--amber); }
.about h2:first-child { margin-top: 0; }
.about p { margin: 0 0 8px; }
.about a { color: var(--teal); }

/* Touch controls */
#touch {
  position: fixed; inset: auto 0 0 0;
  display: none; justify-content: space-between; align-items: flex-end;
  padding: 0 16px max(18px, env(safe-area-inset-bottom));
  pointer-events: none;
}
.pad { display: flex; gap: 12px; align-items: flex-end; pointer-events: auto; }
#touch button {
  width: 68px; height: 68px; border-radius: 50%;
  font: inherit; font-weight: 700; font-size: 20px; color: var(--text);
  background: rgba(9, 20, 35, 0.6); border: 1px solid var(--line);
  touch-action: none; -webkit-tap-highlight-color: transparent;
}
#touch button.small { width: 60px; height: 60px; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--teal); }
#touch button.fire { width: 80px; height: 80px; font-size: 14px; letter-spacing: 0.1em; text-transform: uppercase; color: #04121a; background: rgba(245, 176, 65, 0.85); border-color: var(--amber); }
#touch button:active { filter: brightness(1.4); }
@media (pointer: coarse) { #touch { display: flex; } }
@media (max-width: 520px) { .value { font-size: 20px; } .meter { width: 84px; } #hud { padding: 10px 12px; } }