/* ============================================================
   Lucky Coin Carnival — NNPlays
   Neon night-carnival theme. Mobile-first portrait stage.
   ============================================================ */
:root {
  --bg0: #0a0420;
  --bg1: #16093a;
  --gold: #ffd34d;
  --gold-deep: #f5a623;
  --pink: #ff3d9a;
  --cyan: #29e7ff;
  --green: #46f3a0;
  --danger: #ff4d5e;
  --ink: #f4efff;
  --panel: rgba(18, 9, 46, 0.92);
  --font: 'Chakra Petch', system-ui, sans-serif;
  --mono: 'Share Tech Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: radial-gradient(120% 90% at 50% 0%, #1c0c46 0%, var(--bg0) 60%, #05010f 100%);
  color: var(--ink);
  font-family: var(--font);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  height: 100dvh;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.bg-glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(40% 30% at 18% 12%, rgba(255, 61, 154, 0.25), transparent 70%),
    radial-gradient(45% 35% at 82% 18%, rgba(41, 231, 255, 0.22), transparent 70%),
    radial-gradient(60% 40% at 50% 100%, rgba(255, 211, 77, 0.18), transparent 70%);
  animation: glowDrift 14s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes glowDrift { from { transform: translateY(0) scale(1); } to { transform: translateY(-12px) scale(1.05); } }

.bg-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(120% 100% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%);
  pointer-events: none;
}

/* ---- Frame: portrait playfield ---- */
#frame {
  position: relative;
  height: 100%;
  aspect-ratio: 540 / 960;
  max-width: 100%;
  max-height: 100%;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 0 0 2px rgba(255,211,77,0.18), 0 24px 80px rgba(0,0,0,0.6);
}

canvas#game {
  display: block;
  width: 100%;
  height: 100%;
  background: #08031a;
  touch-action: none;
}

/* ---- HUD ---- */
.hud {
  position: absolute; top: 0; left: 0; right: 0;
  z-index: 6;
  padding: 10px 12px 8px;
  background: linear-gradient(180deg, rgba(8,3,26,0.85) 0%, rgba(8,3,26,0) 100%);
  pointer-events: none;
  transition: opacity 0.3s;
}
.hud.hidden { opacity: 0; pointer-events: none; }
.hud-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.hud-group { display: flex; align-items: center; gap: 8px; pointer-events: auto; }
.hud-cell { display: flex; flex-direction: column; line-height: 1; }
.hud-center { align-items: center; }
.hud-label { font-size: 9px; letter-spacing: 2px; color: rgba(244,239,255,0.55); font-weight: 600; }
.hud-value { font-family: var(--mono); font-size: 22px; color: var(--gold); text-shadow: 0 0 12px rgba(255,211,77,0.55); }
.hud-value.flash { animation: pop 0.4s ease; }
@keyframes pop { 0% { transform: scale(1.35); color: #fff; } 100% { transform: scale(1); } }

.mult-chip {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink), var(--gold-deep));
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
  box-shadow: 0 0 16px rgba(255,61,154,0.5);
}

.hud-btn {
  pointer-events: auto;
  width: 38px; height: 38px;
  border: none; border-radius: 11px;
  background: rgba(255,255,255,0.08);
  color: var(--ink);
  font-size: 15px;
  cursor: pointer;
  display: grid; place-items: center;
  backdrop-filter: blur(6px);
  transition: background 0.15s, transform 0.1s;
}
.hud-btn:hover { background: rgba(255,255,255,0.16); }
.hud-btn:active { transform: scale(0.92); }

.luck-wrap { display: flex; align-items: center; gap: 8px; margin-top: 8px; pointer-events: none; }
.luck-label { font-size: 9px; letter-spacing: 2px; color: var(--green); font-weight: 700; }
.luck-bar {
  flex: 1; height: 8px; border-radius: 999px;
  background: rgba(255,255,255,0.1);
  overflow: hidden;
  box-shadow: inset 0 0 6px rgba(0,0,0,0.5);
}
.luck-bar > span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--green), var(--cyan));
  box-shadow: 0 0 12px var(--green);
  transition: width 0.2s ease;
}

/* ---- FX layers ---- */
.flash {
  position: absolute; inset: 0; z-index: 7;
  background: #fff; opacity: 0; pointer-events: none;
  mix-blend-mode: screen;
}
.flash.hit { animation: flashHit 0.35s ease; }
@keyframes flashHit { 0% { opacity: 0.55; } 100% { opacity: 0; } }

.jackpot-banner {
  position: absolute; top: 38%; left: 0; right: 0; z-index: 8;
  text-align: center;
  font-size: clamp(28px, 9vw, 56px);
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--gold);
  text-shadow: 0 0 24px var(--gold-deep), 0 0 48px var(--pink);
  opacity: 0; pointer-events: none;
  transform: scale(0.7);
}
.jackpot-banner.show { animation: jackpotPop 1.6s ease; }
@keyframes jackpotPop {
  0% { opacity: 0; transform: scale(0.5) rotate(-4deg); }
  18% { opacity: 1; transform: scale(1.1) rotate(2deg); }
  30% { transform: scale(1) rotate(0); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.05); }
}

/* ---- Screens ---- */
.screen {
  position: absolute; inset: 0; z-index: 10;
  display: none;
  align-items: center; justify-content: center;
  padding: 20px;
  background: radial-gradient(120% 90% at 50% 0%, rgba(33,18,77,0.6), rgba(5,1,15,0.82) 75%);
  backdrop-filter: blur(2px);
}
.screen.active { display: flex; animation: fadeIn 0.35s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.panel {
  width: 100%; max-width: 380px;
  background: var(--panel);
  border: 1px solid rgba(255,211,77,0.18);
  border-radius: 22px;
  padding: 26px 22px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.55), inset 0 1px 0 rgba(255,255,255,0.06);
}

.tag {
  display: inline-block;
  font-size: 11px; letter-spacing: 4px; font-weight: 700;
  color: var(--cyan);
  padding: 4px 12px; margin-bottom: 14px;
  border: 1px solid rgba(41,231,255,0.4);
  border-radius: 999px;
  text-shadow: 0 0 12px rgba(41,231,255,0.6);
}
.tag.gold { color: var(--gold); border-color: rgba(255,211,77,0.5); text-shadow: 0 0 12px rgba(255,211,77,0.6); }

.logo {
  font-size: clamp(30px, 9vw, 46px);
  line-height: 0.95;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 14px;
  color: var(--gold);
  text-shadow: 0 0 22px rgba(255,211,77,0.55), 0 4px 0 rgba(0,0,0,0.25);
}
.logo span { display: block; color: var(--pink); text-shadow: 0 0 22px rgba(255,61,154,0.6); }
.logo em { display: block; font-style: normal; font-size: 0.6em; letter-spacing: 6px; color: var(--cyan); text-shadow: 0 0 18px rgba(41,231,255,0.6); }

.subtitle { font-size: 13px; color: rgba(244,239,255,0.72); margin-bottom: 22px; line-height: 1.5; }
.screen-title { font-size: 30px; font-weight: 700; letter-spacing: 2px; margin-bottom: 18px; color: var(--ink); }
.screen-title.gold { color: var(--gold); text-shadow: 0 0 20px rgba(255,211,77,0.5); }

.btn {
  display: block; width: 100%;
  border: none; border-radius: 14px;
  padding: 15px;
  font-family: var(--font); font-size: 16px; font-weight: 700; letter-spacing: 2px;
  cursor: pointer;
  margin-bottom: 10px;
  transition: transform 0.1s, filter 0.15s, box-shadow 0.15s;
}
.btn:active { transform: scale(0.97); }
.btn.primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  color: #2a1500;
  box-shadow: 0 8px 24px rgba(245,166,35,0.4);
}
.btn.primary:hover { filter: brightness(1.08); box-shadow: 0 10px 30px rgba(245,166,35,0.55); }
.btn.ghost {
  background: rgba(255,255,255,0.06);
  color: var(--ink);
  border: 1px solid rgba(255,255,255,0.12);
}
.btn.ghost:hover { background: rgba(255,255,255,0.12); }

.best-line { margin-top: 8px; font-family: var(--mono); font-size: 13px; letter-spacing: 2px; color: rgba(244,239,255,0.6); }
.best-line span { color: var(--gold); }

.how-list { text-align: left; margin-bottom: 18px; font-size: 13.5px; line-height: 1.6; color: rgba(244,239,255,0.85); }
.how-list li { margin-bottom: 9px; list-style: none; padding-left: 18px; position: relative; }
.how-list li::before { content: '▸'; position: absolute; left: 0; color: var(--gold); }
.how-list b { color: var(--ink); }

.stat-row { display: flex; justify-content: space-between; align-items: center; padding: 9px 4px; border-bottom: 1px solid rgba(255,255,255,0.07); font-size: 14px; }
.stat-row span { color: rgba(244,239,255,0.6); letter-spacing: 1px; font-size: 12px; }
.stat-row b { font-family: var(--mono); font-size: 18px; color: var(--gold); }

.new-best { margin: 12px 0; font-weight: 700; letter-spacing: 3px; color: var(--green); text-shadow: 0 0 16px rgba(70,243,160,0.6); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0.4; } }

/* ---- Auth row ---- */
.auth-row { margin-top: 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.auth-status { font-size: 12px; color: rgba(244,239,255,0.6); }
.auth-status b { color: var(--cyan); }
.auth-link { background: none; border: none; color: var(--pink); font-size: 12px; cursor: pointer; text-decoration: underline; }
.hidden { display: none !important; }

.controls-hint { margin-top: 16px; font-size: 11px; color: rgba(244,239,255,0.5); line-height: 1.8; }
.controls-hint span { display: block; }
kbd {
  display: inline-block; padding: 1px 6px; border-radius: 5px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.18);
  font-family: var(--mono); font-size: 11px;
}
.touch-only { display: none; }

/* ---- Leaderboard ---- */
.leaderboard { margin: 16px 0 4px; text-align: left; position: relative; }
.lb-title { font-size: 11px; letter-spacing: 3px; color: rgba(244,239,255,0.55); margin-bottom: 8px; text-align: center; }
.lb-list { list-style: none; }
.lb-list li { display: flex; align-items: center; gap: 10px; padding: 6px 8px; border-radius: 8px; font-size: 13px; }
.lb-list li.me { background: rgba(255,211,77,0.12); }
.lb-rank { font-family: var(--mono); color: var(--gold); width: 22px; }
.lb-name { flex: 1; color: rgba(244,239,255,0.85); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-pts { font-family: var(--mono); color: var(--cyan); }
.lb-loading, .lb-empty { color: rgba(244,239,255,0.45); font-size: 12px; text-align: center; padding: 10px; }
.lb-source { position: absolute; top: 0; right: 0; font-size: 9px; letter-spacing: 1px; color: rgba(244,239,255,0.35); }

/* ---- Guest nudge ---- */
.nn-score-nudge { margin: 14px 0; padding: 14px; border-radius: 14px; background: rgba(41,231,255,0.08); border: 1px solid rgba(41,231,255,0.25); }
.nn-score-nudge p { font-size: 13px; margin-bottom: 10px; }
.nn-nudge-btns { display: flex; gap: 8px; }
.nn-nudge-signup { flex: 1; text-decoration: none; text-align: center; padding: 10px; border-radius: 10px; background: linear-gradient(135deg, var(--cyan), #1aa8d8); color: #04212b; font-weight: 700; font-size: 13px; }
.nn-nudge-later { flex: 1; padding: 10px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.15); background: transparent; color: rgba(244,239,255,0.7); font-size: 13px; cursor: pointer; }

.fb-btn:empty { display: none; }

/* ---- Touch device tweaks ---- */
@media (pointer: coarse) {
  .touch-only { display: block; }
  .controls-hint span:first-child { display: none; }
}

/* ---- Short / landscape safety ---- */
@media (max-height: 560px) {
  .panel { padding: 18px 16px; }
  .logo { font-size: clamp(24px, 7vw, 36px); }
  .subtitle { margin-bottom: 14px; }
  .leaderboard { display: none; }
}