/* ─── Nightwire — late-night palette ─────────────────────────────────────── */
:root {
  --bg:        #07060e;
  --ink:       #0d0b18;
  --plum:      #1a1026;
  --plum-2:    #261a36;
  --line:      rgba(255,255,255,.08);
  --amber:     #f5b942;
  --amber-hi:  #ffd98a;
  --neon:      #ff3b4a;
  --neon-dim:  #8a1f2a;
  --cream:     #f3ecdc;
  --text:      #e8e4f0;
  --muted:     #8d87a6;
  --shadow:    rgba(0,0,0,.55);
  --radius:    14px;
  --radius-sm: 7px;
  --font:      'Space Grotesk', system-ui, sans-serif;
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
[hidden] { display:none !important; }

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

/* The canvas lives under every screen. */
#game-canvas { position:fixed; inset:0; display:block; touch-action:none; z-index:0; }

/* ─── Screen system ──────────────────────────────────────────────────────── */
.screen { display:none; width:100%; height:100%; position:absolute; top:0; left:0; z-index:1;
  overflow-y:auto; -webkit-overflow-scrolling:touch; scrollbar-width:none; }
.screen::-webkit-scrollbar { display:none; }
.screen.active { display:flex; flex-direction:column; }

/* ─── Sound toggle (floating pill, top-left) ─────────────────────────────── */
.sound-toggle {
  position:absolute; top:calc(env(safe-area-inset-top, 0px) + 14px); left:14px; z-index:5;
  height:32px; width:88px;
  border:2px solid var(--plum-2); border-radius:16px;
  background:rgba(13,11,24,.85);
  box-shadow:0 2px 0 var(--shadow);
  cursor:pointer; padding:0;
  display:flex; align-items:center;
  transition:background .3s ease, border-color .3s ease;
  overflow:hidden;
}
.sound-toggle:active { transform:translateY(1px); }
.sound-toggle.on { background:var(--amber); border-color:var(--amber-hi); }
.sound-knob {
  position:absolute; width:22px; height:22px; border-radius:50%;
  background:var(--cream); border:2px solid var(--plum-2);
  left:3px; top:3px;
  transition:left .3s cubic-bezier(.4,0,.2,1);
  box-shadow:0 1px 3px rgba(0,0,0,.35); z-index:2;
}
.sound-toggle.on .sound-knob { left:59px; border-color:var(--amber-hi); }
.sound-label {
  position:absolute; font-size:11px; font-weight:700; letter-spacing:.04em;
  color:var(--text); pointer-events:none; line-height:1; left:30px;
  transition:left .3s cubic-bezier(.4,0,.2,1), color .3s ease;
}
.sound-toggle.on .sound-label { left:8px; color:var(--ink); }

/* ═══════════════════════════════════════════
   START SCREEN
═══════════════════════════════════════════ */
#start-screen { align-items:center; justify-content:center;
  background:linear-gradient(180deg, rgba(7,6,14,.55) 0%, rgba(7,6,14,.25) 45%, rgba(7,6,14,.7) 100%); }
.start-inner {
  position:relative; z-index:1;
  display:flex; flex-direction:column; align-items:center; gap:18px;
  padding:calc(env(safe-area-inset-top, 0px) + 60px) 20px 32px; width:100%; max-width:420px;
}
.logo-area { text-align:center; }
.logo-kicker { font-size:11px; font-weight:700; letter-spacing:.32em; color:var(--amber); }
.logo-title {
  font-size:54px; font-weight:700; letter-spacing:.06em; line-height:1;
  color:var(--cream);
  text-shadow:0 0 18px rgba(245,185,66,.35), 0 4px 0 rgba(0,0,0,.6), 0 10px 30px rgba(0,0,0,.8);
  margin-top:8px;
}
.logo-tagline { font-size:14px; font-weight:500; color:var(--muted); margin-top:10px; font-style:italic; }

.start-card {
  background:rgba(13,11,24,.82);
  border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 18px; width:100%;
  box-shadow:0 8px 30px rgba(0,0,0,.5);
  backdrop-filter:blur(6px);
}
.start-card h2 { font-size:11px; letter-spacing:.2em; color:var(--amber); text-align:center; margin-bottom:8px; }
.how-to-steps { list-style:none; display:flex; flex-direction:column; gap:6px; }
.how-to-steps li { font-size:14px; font-weight:500; color:var(--text); padding-left:18px; position:relative; }
.how-to-steps li::before { content:''; position:absolute; left:2px; top:8px; width:6px; height:6px; border-radius:50%; background:var(--amber); box-shadow:0 0 8px var(--amber); }
.how-to-steps b { color:var(--amber-hi); font-weight:700; }

.start-best { font-size:13px; font-weight:700; color:var(--amber-hi); letter-spacing:.08em; }

/* ═══════════════════════════════════════════
   SHARED BUTTONS
═══════════════════════════════════════════ */
.btn {
  font-family:inherit;
  font-size:14px; font-weight:700; letter-spacing:.06em;
  padding:10px 18px;
  border:2px solid; border-radius:var(--radius);
  cursor:pointer;
  transition:transform .1s, box-shadow .1s, opacity .15s;
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
}
.btn:active:not(:disabled) { transform:translateY(3px); }
.btn:disabled { opacity:.5; cursor:not-allowed; }

.btn-primary {
  background:var(--amber); color:var(--ink);
  border-color:var(--amber-hi);
  box-shadow:0 4px 0 #8a6416, 0 0 24px rgba(245,185,66,.25);
}
.btn-primary:active:not(:disabled) { box-shadow:0 1px 0 #8a6416; }

.btn-secondary {
  background:rgba(13,11,24,.85); color:var(--text);
  border-color:var(--plum-2);
  box-shadow:0 4px 0 var(--shadow);
}
.btn-secondary:active { box-shadow:0 1px 0 var(--shadow); }

.btn-big { padding:14px 40px; font-size:18px; box-shadow:0 6px 0 #8a6416, 0 0 30px rgba(245,185,66,.3); }
.btn-big:active:not(:disabled) { transform:translateY(5px); box-shadow:0 1px 0 #8a6416; }

.back-btn {
  background:none; color:var(--muted);
  font-size:13px; font-weight:700; letter-spacing:.05em;
  cursor:pointer; padding:6px 14px;
  border:1px solid var(--line); border-radius:var(--radius);
  text-decoration:none;
}
.back-btn:hover { background:rgba(255,255,255,.06); }

/* ═══════════════════════════════════════════
   GAME SCREEN
═══════════════════════════════════════════ */
#game-screen {
  position:fixed; inset:0;
  height:100vh; height:100dvh;
  overflow:hidden;
  touch-action:none;
  overscroll-behavior:none;
  background:transparent;
}

#hud {
  position:absolute; left:0; right:0; top:0;
  padding:calc(env(safe-area-inset-top, 0px) + 12px) 16px 0;
  display:flex; justify-content:space-between; align-items:flex-start;
  pointer-events:none; z-index:2;
}
.hud-left, .hud-right { display:flex; flex-direction:column; gap:5px; }
.hud-right { align-items:flex-end; }
.hud-score {
  font-size:36px; font-weight:700; line-height:1; color:var(--cream);
  text-shadow:0 0 14px rgba(245,185,66,.25), 0 2px 0 rgba(0,0,0,.7), 0 4px 14px rgba(0,0,0,.9);
  font-variant-numeric:tabular-nums;
}
.hud-score.bump { animation:hudBump .18s ease-out; }
@keyframes hudBump { 0%{transform:scale(1.18)} 100%{transform:scale(1)} }
.hud-clock {
  font-size:12px; font-weight:700; letter-spacing:.16em; color:var(--amber);
  text-shadow:0 0 10px rgba(245,185,66,.5), 0 2px 6px rgba(0,0,0,.9);
  font-variant-numeric:tabular-nums;
}

.hud-mult {
  font-size:12px; font-weight:700; letter-spacing:.16em; color:var(--ink);
  background:var(--amber); border-radius:6px; padding:2px 7px; width:max-content;
  box-shadow:0 0 12px rgba(245,185,66,.6);
  animation:multIn .25s cubic-bezier(.2,.9,.3,1.3);
}
@keyframes multIn { 0%{transform:scale(.6); opacity:0} 100%{transform:scale(1); opacity:1} }

.hud-grips { display:flex; gap:6px; }
.grip {
  width:14px; height:14px; border-radius:50%;
  border:2px solid var(--amber); background:var(--amber);
  box-shadow:0 0 10px rgba(245,185,66,.6), 0 2px 6px rgba(0,0,0,.6);
  transition:background .2s, box-shadow .2s, transform .2s;
}
.grip.lost { background:transparent; border-color:var(--neon-dim); box-shadow:0 2px 6px rgba(0,0,0,.6); animation:gripPop .3s ease-out; }
@keyframes gripPop { 0%{transform:scale(1.6)} 100%{transform:scale(1)} }
.hud-stars { font-size:13px; font-weight:700; color:var(--cream); text-shadow:0 0 10px rgba(255,255,255,.4), 0 2px 6px rgba(0,0,0,.9); letter-spacing:.06em; }

.stage-card {
  position:absolute; left:50%; top:34%; transform:translate(-50%,-50%);
  text-align:center; pointer-events:none; z-index:3;
  padding:12px 26px;
  background:rgba(7,6,14,.78);
  border:1px solid rgba(245,185,66,.5); border-radius:var(--radius);
  box-shadow:0 10px 40px rgba(0,0,0,.7);
  animation:cardIn .3s cubic-bezier(.2,.9,.3,1.2);
  max-width:88%;
}
@keyframes cardIn { 0%{transform:translate(-50%,-50%) scale(.7); opacity:0} 100%{transform:translate(-50%,-50%) scale(1); opacity:1} }
.stage-card-kicker { font-size:11px; letter-spacing:.28em; color:var(--amber); font-weight:700; }
.stage-card-title { font-size:20px; font-weight:700; color:var(--cream); letter-spacing:.06em; margin-top:3px; }
.stage-card.warn .stage-card-kicker { color:var(--neon); }

.pause-overlay {
  position:absolute; inset:0; z-index:4;
  background:rgba(7,6,14,.72);
  display:flex; align-items:center; justify-content:center;
}
.pause-box { text-align:center; }
.pause-title { font-size:36px; font-weight:700; color:var(--cream); letter-spacing:.14em; }
.pause-sub { font-size:14px; font-weight:500; color:var(--muted); margin-top:6px; }

/* ═══════════════════════════════════════════
   GAME OVER SCREEN
═══════════════════════════════════════════ */
#gameover-screen { align-items:center; background:linear-gradient(180deg, rgba(7,6,14,.6), rgba(7,6,14,.85)); }
.gameover-inner {
  position:relative; z-index:1;
  display:flex; flex-direction:column; align-items:center; gap:14px;
  padding:calc(env(safe-area-inset-top, 0px) + 28px) 18px 32px; width:100%; max-width:420px;
}
.results-card {
  width:100%;
  background:rgba(13,11,24,.9);
  border:1px solid rgba(245,185,66,.5); border-radius:var(--radius);
  padding:16px 18px 14px; text-align:center;
  box-shadow:0 10px 40px rgba(0,0,0,.6);
}
.results-kicker { font-size:11px; letter-spacing:.3em; color:var(--neon); font-weight:700; }
.results-score {
  font-size:64px; font-weight:700; line-height:1.05; color:var(--cream);
  text-shadow:0 0 20px rgba(245,185,66,.3), 0 3px 0 rgba(0,0,0,.7);
  font-variant-numeric:tabular-nums;
}
.results-newbest { font-size:13px; font-weight:700; letter-spacing:.18em; color:var(--amber-hi); margin-top:2px; animation:glow 1.2s ease-in-out infinite alternate; }
@keyframes glow { from{text-shadow:0 0 4px rgba(255,217,138,.3)} to{text-shadow:0 0 16px rgba(255,217,138,.9)} }
.results-row { display:flex; justify-content:space-around; margin-top:12px; padding-top:10px; border-top:1px solid var(--line); }
.results-stat-value { font-size:22px; font-weight:700; color:var(--amber-hi); font-variant-numeric:tabular-nums; }
.results-stat-label { font-size:10px; font-weight:700; letter-spacing:.16em; color:var(--muted); }

.leaderboard {
  width:100%;
  background:rgba(7,6,14,.85);
  border:1px solid var(--line); border-radius:var(--radius);
  padding:10px 12px;
}
.lb-header { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:6px; }
.lb-title { font-size:12px; font-weight:700; letter-spacing:.16em; color:var(--amber); }
.lb-rank { font-size:11px; font-weight:700; color:var(--muted); }
.lb-list { list-style:none; display:flex; flex-direction:column; gap:2px; }
.lb-list li {
  display:grid; grid-template-columns:26px 1fr auto; align-items:center; gap:8px;
  font-size:13px; font-weight:500; padding:4px 6px; border-radius:var(--radius-sm);
  font-variant-numeric:tabular-nums;
}
.lb-list li.me { background:rgba(245,185,66,.14); outline:1px solid rgba(245,185,66,.5); }
.lb-list li .lb-pos { color:var(--amber); font-weight:700; }
.lb-list li .lb-name { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; display:flex; align-items:center; gap:6px; }
.lb-list li .lb-score { color:var(--amber-hi); font-weight:700; }
.lb-list li.lb-loading, .lb-list li.lb-empty { display:block; text-align:center; color:var(--muted); font-size:12px; }
.lb-edit { background:none; border:none; color:var(--muted); cursor:pointer; font-size:12px; padding:0 2px; line-height:1; }
.lb-edit:hover { color:var(--amber-hi); }
.lb-nick-form { display:flex; gap:6px; align-items:center; }
.lb-nick-input {
  font-family:inherit; font-weight:700; font-size:13px;
  width:110px; padding:3px 6px;
  border:1px solid var(--amber); border-radius:var(--radius-sm);
  background:var(--ink); color:var(--cream);
}
.lb-nick-save { font-size:11px; padding:3px 8px; border-radius:var(--radius-sm); border:1px solid var(--amber); background:var(--amber); color:var(--ink); font-weight:700; cursor:pointer; font-family:inherit; }
.lb-footer { margin-top:6px; text-align:center; font-size:11px; font-weight:500; color:var(--muted); }
.lb-footer a { color:var(--amber-hi); }

.results-actions { display:flex; flex-direction:column; align-items:center; gap:10px; width:100%; }

/* ── Auth icon + dropdown (shared auth-ui.js) ───────────────────────────── */
.auth-badge { position:fixed; top:calc(env(safe-area-inset-top, 0px) + 10px); right:12px; z-index:200; }
#game-screen.active ~ .auth-badge { display:none; }
.auth-icon-btn {
  width:32px; height:32px; border-radius:50%;
  border:1px solid var(--amber);
  background:rgba(13,11,24,.85); color:var(--cream);
  font-size:13px; font-weight:700; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.auth-icon-btn:hover { border-color:var(--amber-hi); }
.auth-dropdown {
  position:absolute; top:38px; right:0; min-width:180px;
  background:var(--plum); border:1px solid var(--amber); border-radius:var(--radius);
  box-shadow:0 4px 16px var(--shadow); padding:6px 0; z-index:201;
}
.auth-dropdown-email { padding:8px 14px; font-size:11px; color:var(--muted); border-bottom:1px solid var(--line); word-break:break-all; }
.auth-dropdown-item {
  display:block; width:100%; padding:8px 14px;
  font-size:12px; color:var(--text); font-family:inherit;
  background:none; border:none; text-decoration:none; text-align:left; cursor:pointer;
}
.auth-dropdown-item:hover { background:var(--ink); }

/* ── Small screens ─────────────────────────────────────────────────────── */
@media (max-height: 700px) {
  .logo-title { font-size:42px; }
  .start-inner { gap:12px; padding-top:calc(env(safe-area-inset-top, 0px) + 50px); }
  .how-to-steps li { font-size:13px; }
  .results-score { font-size:52px; }
}