/* ============================================================
   NEON CLASH — retro-arcade neon stylesheet
   ============================================================ */
:root {
  --bg: #05060f;
  --bg2: #0a0d1f;
  --p1: #00e5ff;
  --p2: #ff8a1f;
  --hot: #ff2e6d;
  --text: #cfe9ff;
  --dim: #5f7ba6;
  --panel: rgba(8, 11, 28, 0.88);
  --line: rgba(0, 229, 255, 0.25);
  --mono: "Courier New", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

/* ---------------- Stage & canvas ---------------- */
#stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1200px 700px at 50% -10%, #0c1230 0%, transparent 60%),
    radial-gradient(900px 600px at 85% 110%, #170a26 0%, transparent 55%),
    var(--bg);
}

#stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 34px, rgba(0, 229, 255, 0.025) 34px 35px),
    repeating-linear-gradient(90deg, transparent 0 34px, rgba(0, 229, 255, 0.025) 34px 35px);
  pointer-events: none;
}

#game-wrap {
  position: relative;
  width: min(100vw, calc(100vh * 16 / 9));
  height: min(100vh, calc(100vw * 9 / 16));
}

@media (orientation: portrait) {
  #stage { align-items: flex-start; }
  #game-wrap { margin-top: 6px; }
}

#game-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: #04050d;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.35),
    0 0 32px rgba(0, 229, 255, 0.18),
    inset 0 0 80px rgba(0, 0, 0, 0.6);
}

/* ---------------- Scanlines / CRT ---------------- */
#scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 60;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.16) 0px,
    rgba(0, 0, 0, 0.16) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: multiply;
}
#scanlines::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 58%, rgba(0, 0, 0, 0.42) 100%);
}

/* ---------------- HUD ---------------- */
#hud {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  padding-top: calc(6px + env(safe-area-inset-top));
  background: linear-gradient(180deg, rgba(4, 6, 16, 0.92) 0%, rgba(4, 6, 16, 0.55) 70%, transparent 100%);
  pointer-events: none;
}
#hud .icon-btn { pointer-events: auto; }

.hud-p { display: flex; align-items: center; gap: 8px; min-width: 0; flex: 1; }
.hud-p2 { justify-content: flex-end; }

.hud-name {
  font-weight: bold;
  font-size: clamp(10px, 1.6vw, 15px);
  letter-spacing: 0.12em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 34vw;
}
.hud-p1 .hud-name { color: var(--p1); text-shadow: 0 0 8px var(--p1); }
.hud-p2 .hud-name { color: var(--p2); text-shadow: 0 0 8px var(--p2); }

.pips { display: flex; gap: 5px; }
.pips i {
  width: clamp(10px, 1.8vw, 16px);
  height: clamp(10px, 1.8vw, 16px);
  transform: rotate(45deg);
  border: 1.5px solid var(--dim);
  background: transparent;
  transition: background 0.2s, box-shadow 0.2s;
}
.hud-p1 .pips i.on { background: var(--p1); border-color: var(--p1); box-shadow: 0 0 10px var(--p1); }
.hud-p2 .pips i.on { background: var(--p2); border-color: var(--p2); box-shadow: 0 0 10px var(--p2); }

.hud-mid {
  text-align: center;
  line-height: 1.25;
  padding: 0 6px;
}
#round-label {
  font-size: clamp(11px, 1.8vw, 16px);
  font-weight: bold;
  letter-spacing: 0.18em;
  color: #eaf6ff;
  text-shadow: 0 0 10px rgba(234, 246, 255, 0.5);
}
#mode-label {
  font-size: clamp(8px, 1.1vw, 10px);
  letter-spacing: 0.3em;
  color: var(--dim);
}

.hud-btns { display: flex; gap: 6px; }
.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: rgba(10, 16, 36, 0.8);
  border: 1px solid var(--line);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
}
.icon-btn svg { width: 19px; height: 19px; }
.icon-btn:hover { border-color: var(--p1); color: var(--p1); box-shadow: 0 0 12px rgba(0, 229, 255, 0.4); }
.icon-btn:active { transform: scale(0.92); }
#btn-sound .snd-mute { display: none; }
#btn-sound.muted .snd-waves { display: none; }
#btn-sound.muted .snd-mute { display: block; }
#btn-sound.muted { color: var(--dim); }

/* ---------------- Touch controls ---------------- */
#touch-controls {
  position: absolute;
  inset: 0;
  z-index: 35;
  pointer-events: none;
}
#touch-controls.hidden { display: none; }
.tc-side { position: absolute; top: 0; bottom: 0; width: 50%; }
#tc-p1 { left: 0; }
#tc-p2 { right: 0; }

.tc-zone {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 62%;
  pointer-events: auto;
  touch-action: none;
}

.tc-joy {
  position: absolute;
  width: 118px; height: 118px;
  margin: -59px 0 0 -59px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  background: radial-gradient(circle, rgba(255,255,255,0.06) 30%, rgba(255,255,255,0.02) 100%);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.12), inset 0 0 24px rgba(255, 255, 255, 0.08);
  pointer-events: none;
}
#tc-p1 .tc-joy { border-color: rgba(0, 229, 255, 0.5); box-shadow: 0 0 18px rgba(0, 229, 255, 0.25), inset 0 0 24px rgba(0, 229, 255, 0.12); }
#tc-p2 .tc-joy { border-color: rgba(255, 138, 31, 0.5); box-shadow: 0 0 18px rgba(255, 138, 31, 0.25), inset 0 0 24px rgba(255, 138, 31, 0.12); }
.tc-knob {
  position: absolute;
  left: 50%; top: 50%;
  width: 52px; height: 52px;
  margin: -26px 0 0 -26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.35);
}
.tc-joy.hidden { display: none; }

.tc-fire {
  position: absolute;
  bottom: calc(26px + env(safe-area-inset-bottom));
  width: 84px; height: 84px;
  border-radius: 50%;
  font-family: var(--mono);
  font-weight: bold;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #fff;
  border: 2px solid;
  pointer-events: auto;
  touch-action: none;
  z-index: 2;
}
#tc-p1 .tc-fire {
  right: 14px;
  color: var(--p1);
  border-color: var(--p1);
  background: radial-gradient(circle, rgba(0, 229, 255, 0.22) 0%, rgba(0, 229, 255, 0.05) 70%);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
}
#tc-p2 .tc-fire {
  left: 14px;
  color: var(--p2);
  border-color: var(--p2);
  background: radial-gradient(circle, rgba(255, 138, 31, 0.22) 0%, rgba(255, 138, 31, 0.05) 70%);
  box-shadow: 0 0 18px rgba(255, 138, 31, 0.35);
}
.tc-fire.pressed { transform: scale(0.9); filter: brightness(1.6); }

/* Solo (AI) mode: one stick left, one fire right */
#touch-controls.solo #tc-p2 { display: none; }
#touch-controls.solo #tc-p1 { width: 100%; }
#touch-controls.solo #tc-p1 .tc-fire { right: calc(24px + env(safe-area-inset-right)); }

/* ---------------- Hint bar ---------------- */
#hint-bar {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  font-size: clamp(9px, 1.3vw, 12px);
  letter-spacing: 0.15em;
  color: var(--dim);
  background: rgba(4, 6, 16, 0.7);
  border: 1px solid rgba(95, 123, 166, 0.3);
  padding: 5px 14px;
  white-space: nowrap;
  transition: opacity 0.6s;
}
#hint-bar.hidden { opacity: 0; pointer-events: none; }

/* ---------------- Announcer ---------------- */
#announce {
  position: absolute;
  left: 50%;
  top: 34%;
  transform: translate(-50%, -50%);
  z-index: 45;
  font-size: clamp(30px, 8vw, 72px);
  font-weight: bold;
  letter-spacing: 0.14em;
  color: #fff;
  text-shadow:
    0 0 12px var(--p1),
    0 0 40px var(--p1),
    0 0 90px var(--p1);
  pointer-events: none;
  opacity: 0;
  white-space: nowrap;
}
#announce.show { animation: announce-pop 0.9s ease-out forwards; }
#announce.show.long { animation-duration: 1.6s; }
#announce.announce-p2 {
  text-shadow: 0 0 12px var(--p2), 0 0 40px var(--p2), 0 0 90px var(--p2);
}
#announce.announce-hot {
  text-shadow: 0 0 12px var(--hot), 0 0 40px var(--hot), 0 0 90px var(--hot);
}
@keyframes announce-pop {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(2.2); }
  18%  { opacity: 1; transform: translate(-50%, -50%) scale(0.96); }
  30%  { transform: translate(-50%, -50%) scale(1.05); }
  75%  { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.15); }
}

/* ---------------- Overlays ---------------- */
#overlay-menu { background: rgba(3, 4, 12, 0.66); }
.overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 4, 12, 0.78);
  backdrop-filter: blur(3px);
  animation: fade-in 0.25s ease-out;
}
.overlay.hidden { display: none; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.menu-scroll {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  -webkit-overflow-scrolling: touch;
}

.menu-box {
  width: min(680px, calc(100vw - 24px));
  margin: 12px 0 20px;
  padding: 18px 22px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.12), inset 0 0 60px rgba(0, 20, 40, 0.5);
  text-align: center;
}

.logo {
  font-size: clamp(34px, 9vw, 58px);
  letter-spacing: 0.12em;
  color: #eafcff;
  line-height: 1;
  text-shadow: 0 0 8px var(--p1), 0 0 30px var(--p1);
  animation: logo-flicker 4s infinite;
}
.logo span {
  color: #fff;
  text-shadow: 0 0 8px var(--p2), 0 0 34px var(--p2);
}
@keyframes logo-flicker {
  0%, 100% { opacity: 1; }
  92% { opacity: 1; }
  93% { opacity: 0.6; }
  94% { opacity: 1; }
  96% { opacity: 0.75; }
  97% { opacity: 1; }
}

.tagline {
  margin: 8px 0 16px;
  font-size: clamp(9px, 1.6vw, 12px);
  letter-spacing: 0.42em;
  color: var(--dim);
}

/* Mode buttons */
.mode-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.mode-btn {
  flex: 1 1 220px;
  max-width: 300px;
  padding: 12px 10px;
  font-family: var(--mono);
  font-size: clamp(12px, 2vw, 15px);
  font-weight: bold;
  letter-spacing: 0.14em;
  color: var(--text);
  background: rgba(10, 16, 38, 0.6);
  border: 1px solid rgba(95, 123, 166, 0.45);
  cursor: pointer;
  transition: all 0.15s;
}
.mode-btn .mode-key {
  display: block;
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--dim);
  margin-bottom: 5px;
}
.mode-btn:hover { border-color: var(--p1); transform: translateY(-1px); }
.mode-btn.active {
  color: #031018;
  background: var(--p1);
  border-color: var(--p1);
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.55);
}
.mode-btn.active .mode-key { color: rgba(3, 16, 24, 0.65); }
#btn-ai.active {
  background: var(--p2);
  border-color: var(--p2);
  box-shadow: 0 0 22px rgba(255, 138, 31, 0.55);
}

/* Difficulty */
.diff-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}
.diff-row.hidden { display: none; }
.diff-label { font-size: 10px; letter-spacing: 0.3em; color: var(--dim); }
.seg { display: flex; }
.seg-btn {
  padding: 7px 14px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 0.14em;
  color: var(--dim);
  background: transparent;
  border: 1px solid rgba(95, 123, 166, 0.4);
  cursor: pointer;
  transition: all 0.12s;
}
.seg-btn + .seg-btn { border-left: none; }
.seg-btn:hover { color: var(--text); }
.seg-btn.active { color: #1a0703; background: var(--p2); border-color: var(--p2); box-shadow: 0 0 14px rgba(255, 138, 31, 0.5); }

/* Customization */
.custom-row {
  display: flex;
  gap: 14px;
  margin-top: 16px;
  justify-content: center;
}
.custom-row.duo { }
.custom-row.solo #custom-p2 { display: none; }
.custom-col {
  flex: 1 1 0;
  max-width: 300px;
  padding: 12px 14px;
  background: rgba(6, 10, 24, 0.65);
  border: 1px solid rgba(95, 123, 166, 0.28);
  text-align: center;
}
.custom-title {
  font-size: 11px;
  letter-spacing: 0.3em;
  margin-bottom: 8px;
}
.custom-title.t1 { color: var(--p1); text-shadow: 0 0 8px var(--p1); }
.custom-title.t2 { color: var(--p2); text-shadow: 0 0 8px var(--p2); }

.name-input {
  width: 100%;
  padding: 7px 6px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: bold;
  letter-spacing: 0.18em;
  text-align: center;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(95, 123, 166, 0.4);
  outline: none;
}
.name-input:focus { border-color: var(--p1); box-shadow: 0 0 10px rgba(0, 229, 255, 0.3); }

.opt-label {
  font-size: 8px;
  letter-spacing: 0.34em;
  color: var(--dim);
  margin: 10px 0 6px;
}

.swatch-row { display: flex; gap: 8px; justify-content: center; }
.swatch {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
}
.swatch:hover { transform: scale(1.15); }
.swatch.active {
  border-color: #fff;
  transform: scale(1.15);
  box-shadow: 0 0 14px currentColor;
}
.c-cyan   { background: #00e5ff; color: #00e5ff; }
.c-volt   { background: #b6ff2e; color: #b6ff2e; }
.c-mag    { background: #ff4df2; color: #ff4df2; }
.c-gold   { background: #ffc93d; color: #ffc93d; }
.c-orange { background: #ff8a1f; color: #ff8a1f; }
.c-red    { background: #ff3b5c; color: #ff3b5c; }
.c-violet { background: #a05dff; color: #a05dff; }
.c-azure  { background: #4d7cff; color: #4d7cff; }

.shape-row { display: flex; gap: 8px; justify-content: center; }
.shape-btn {
  width: 42px; height: 34px;
  display: grid; place-items: center;
  color: var(--dim);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(95, 123, 166, 0.35);
  cursor: pointer;
  transition: all 0.12s;
}
.shape-btn svg { width: 22px; height: 22px; }
.shape-btn:hover { color: var(--text); }
.shape-btn.active { color: #fff; border-color: currentColor; box-shadow: 0 0 10px rgba(255, 255, 255, 0.25); }

/* Start button */
.start-btn {
  margin-top: 18px;
  width: min(340px, 100%);
  padding: 14px 20px;
  font-family: var(--mono);
  font-size: clamp(14px, 2.4vw, 18px);
  font-weight: bold;
  letter-spacing: 0.22em;
  color: #041018;
  background: linear-gradient(180deg, #5ff2ff 0%, #00cfe8 100%);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.5), 0 4px 0 rgba(0, 80, 100, 0.8);
  transition: transform 0.1s, box-shadow 0.1s;
  animation: start-pulse 1.6s ease-in-out infinite;
}
.start-btn svg { width: 16px; height: 16px; }
.start-btn:hover { transform: translateY(-2px); }
.start-btn:active { transform: translateY(2px); box-shadow: 0 0 18px rgba(0, 229, 255, 0.4), 0 1px 0 rgba(0, 80, 100, 0.8); }
@keyframes start-pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 229, 255, 0.45), 0 4px 0 rgba(0, 80, 100, 0.8); }
  50% { box-shadow: 0 0 34px rgba(0, 229, 255, 0.75), 0 4px 0 rgba(0, 80, 100, 0.8); }
}

.ghost-btn {
  width: min(340px, 100%);
  margin-top: 10px;
  padding: 11px 18px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 0.22em;
  color: var(--text);
  background: transparent;
  border: 1px solid rgba(95, 123, 166, 0.55);
  cursor: pointer;
  transition: all 0.15s;
}
.ghost-btn:hover { border-color: var(--p1); color: #fff; box-shadow: 0 0 14px rgba(0, 229, 255, 0.3); }
.ghost-btn:active { transform: scale(0.98); }

/* Help / hints */
.help-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}
.help {
  font-size: clamp(9px, 1.5vw, 11px);
  letter-spacing: 0.08em;
  color: var(--dim);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(95, 123, 166, 0.25);
  padding: 7px 12px;
}
.help b { letter-spacing: 0.2em; margin-right: 4px; }
.help.h1 b { color: var(--p1); }
.help.h2 b { color: var(--p2); }
.key {
  display: inline-block;
  min-width: 16px;
  padding: 1px 4px;
  margin: 0 1px;
  border: 1px solid rgba(160, 190, 230, 0.5);
  border-bottom-width: 2px;
  border-radius: 3px;
  color: var(--text);
  font-size: 0.92em;
  text-align: center;
}
.hint-line {
  margin-top: 14px;
  font-size: 9px;
  letter-spacing: 0.2em;
  color: rgba(95, 123, 166, 0.75);
  line-height: 1.9;
}

/* ---------------- Small overlay boxes (pause / round / match) ---------------- */
.small-box {
  width: min(440px, calc(100vw - 28px));
  padding: 26px 26px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 0 46px rgba(0, 229, 255, 0.16);
  text-align: center;
  animation: box-in 0.3s cubic-bezier(0.2, 1.4, 0.4, 1);
}
@keyframes box-in {
  from { opacity: 0; transform: scale(0.85) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.box-title {
  font-size: clamp(16px, 3.4vw, 22px);
  letter-spacing: 0.18em;
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.5);
  margin-bottom: 18px;
}
#match-winner { text-shadow: 0 0 14px var(--p1), 0 0 40px var(--p1); }
#match-winner.win-p2 { text-shadow: 0 0 14px var(--p2), 0 0 40px var(--p2); }

.round-result {
  font-size: clamp(16px, 3.6vw, 24px);
  font-weight: bold;
  letter-spacing: 0.12em;
  color: #fff;
  text-shadow: 0 0 16px var(--p1);
  margin-bottom: 8px;
}
.round-result.res-p2 { text-shadow: 0 0 16px var(--p2); }
.round-result.res-none { text-shadow: 0 0 16px var(--hot); color: #ffd9e4; }

.score-line {
  font-size: clamp(22px, 5vw, 34px);
  font-weight: bold;
  letter-spacing: 0.2em;
  color: #eaf6ff;
  text-shadow: 0 0 14px rgba(234, 246, 255, 0.55);
  margin-bottom: 14px;
}

.round-next {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--dim);
  margin-bottom: 16px;
}
.round-next b { color: #fff; font-size: 14px; }

.match-btns { display: flex; flex-direction: column; align-items: center; }
.trophy {
  width: 64px; height: 64px;
  color: #ffd75e;
  filter: drop-shadow(0 0 12px rgba(255, 215, 94, 0.8));
  margin-bottom: 10px;
  animation: trophy-bob 1.4s ease-in-out infinite;
}
@keyframes trophy-bob {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-6px) rotate(3deg); }
}

/* ---------------- Focus visibility ---------------- */
button:focus-visible, input:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ---------------- Small screens ---------------- */
@media (max-width: 560px) {
  .menu-box { padding: 14px 12px 18px; }
  .custom-row { flex-direction: column; align-items: center; }
  .custom-col { max-width: 340px; width: 100%; }
  .hud-mid { display: none; }
  #hint-bar { display: none; }
  .help { font-size: 9px; }
}
@media (max-height: 460px) and (orientation: landscape) {
  .menu-scroll { align-items: center; }
  .menu-box { margin: 6px 0; }
}