/* style.css — Trench Runner UI
   Mobile-first, dark arcade aesthetic.
   All game chrome (HUD, modals, touch hint) lives here.
   The canvas is fullscreen and sits behind everything.
*/

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

:root {
  --bg:        #0b0c10;
  --surface:   #14161d;
  --border:    #2a2d3a;
  --accent:    #f0c040;   /* gold — coins / score */
  --accent2:   #3de0a0;   /* teal — secondary UI */
  --danger:    #e05050;
  --text:      #e8eaf0;
  --text-dim:  #7a7e92;
  --radius:    10px;
  --font:      "Segoe UI", system-ui, sans-serif;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  touch-action: none;        /* prevent scroll/zoom during play */
  user-select: none;
}

/* ── Canvas ────────────────────────────────────────────── */
#c {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}

/* ── Utility ────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── HUD ────────────────────────────────────────────────── */
#hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 12px 16px;
  pointer-events: none;
  /* subtle top gradient so text reads over the sky */
  background: linear-gradient(to bottom, rgba(0,0,0,.55) 0%, transparent 100%);
}

#hud-score {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .04em;
  text-shadow: 0 1px 6px rgba(0,0,0,.7);
}

/* $BULLRUN counter + multiplier — dead-centre top, independent of the flex
   row so it never drifts with window size or the other HUD items. */
#hud-center {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  pointer-events: none;
}
#hud-coins {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: .05em;
  background: linear-gradient(180deg, #ffe9a3 15%, #f0c040 55%, #b8811f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.65)) drop-shadow(0 0 16px rgba(240,192,64,.3));
}

#hud-dist {
  font-size: 1rem;
  color: var(--accent2);
  font-weight: 600;
  text-shadow: 0 1px 4px rgba(0,0,0,.7);
}

/* ── Game-over screen ───────────────────────────────────── */
#screen-gameover {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
}

.go-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 40px;
  min-width: 280px;
  max-width: 90vw;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,.7);
}

.go-card h2 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--danger);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.go-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 1.1rem;
}
.go-row:last-of-type { border-bottom: none; }

.go-label { color: var(--text-dim); }
.go-row span:last-child { font-weight: 700; color: var(--accent); font-size: 1.2rem; }

.go-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  justify-content: center;
}
.go-actions button { flex: 1; min-width: 90px; }

/* ── Buttons ────────────────────────────────────────────── */
button {
  cursor: pointer;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius);
  padding: 12px 24px;
  background: var(--accent);
  color: var(--bg);
  transition: opacity .15s, transform .1s;
  -webkit-tap-highlight-color: transparent;
}
button:active  { opacity: .8; transform: scale(.97); }
button:disabled { opacity: .4; cursor: default; }

#btn-retry  { background: var(--accent2); }
#btn-submit { background: var(--accent); }
#btn-lobby  { background: var(--border); color: var(--text); }

/* ── Lobby ──────────────────────────────────────────────── */
#screen-lobby {
  position: fixed; inset: 0; z-index: 25;
  display: flex; align-items: center; justify-content: center;
  padding: 16px; overflow-y: auto;
  background: radial-gradient(circle at 50% -10%, #19203a 0%, #0b0c10 65%);
}
.lobby-card {
  width: 100%; max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 12px 60px rgba(0,0,0,.7);
  display: flex; flex-direction: column; gap: 20px;
}
.lobby-brand { text-align: center; }
.lobby-brand h1 {
  font-size: 2rem; font-weight: 900; letter-spacing: .06em;
  color: var(--accent); text-transform: uppercase;
  text-shadow: 0 2px 24px rgba(240,192,64,.3);
}
.lobby-tag { color: var(--text-dim); font-size: .8rem; margin-top: 4px; letter-spacing: .03em; }

.lobby-stats { display: flex; gap: 12px; }
.lobby-stats .stat {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px; text-align: center;
}
.stat-num { display: block; font-size: 1.5rem; font-weight: 800; color: var(--accent2); }
.stat-lbl { display: block; font-size: .68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .08em; margin-top: 2px; }

.btn-play {
  width: 100%; padding: 18px; font-size: 1.3rem; font-weight: 900;
  letter-spacing: .14em; background: var(--accent); color: var(--bg);
  border-radius: 12px; box-shadow: 0 6px 28px rgba(240,192,64,.4);
}

.controls-legend {
  display: flex; justify-content: space-around; gap: 8px;
  font-size: .72rem; color: var(--text-dim); letter-spacing: .02em;
}
.controls-legend b { color: var(--text); }

.lobby-board h3 {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-dim); margin-bottom: 8px;
}
#lobby-leaderboard { list-style: none; display: flex; flex-direction: column; gap: 4px; }
#lobby-leaderboard li {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; background: var(--bg); border-radius: 8px; font-size: .85rem;
}
.lb-rank  { color: var(--accent); font-weight: 700; width: 26px; }
.lb-name  { flex: 1; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-score { color: var(--accent2); font-weight: 700; }
.lb-empty { color: var(--text-dim); justify-content: center; }

.lobby-foot {
  display: flex; align-items: center; justify-content: space-between;
  font-size: .8rem; color: var(--text-dim);
  border-top: 1px solid var(--border); padding-top: 14px;
}
.link-btn {
  background: none; color: var(--text-dim); padding: 4px 8px;
  font-size: .72rem; text-transform: uppercase; letter-spacing: .05em;
}

/* ── Modals (auth + recovery) ───────────────────────────── */
#auth-modal,
#recovery-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(6px);
  padding: 16px;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 48px rgba(0,0,0,.8);
}

.modal-card { position: relative; }
.modal-close {
  position: absolute; top: 10px; right: 10px;
  width: 32px; height: 32px; padding: 0;
  background: var(--bg); color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 8px;
  font-size: .9rem; line-height: 1;
}
.modal-close:active { color: var(--text); }

.modal-title {
  text-align: center;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--accent);
  margin-bottom: 4px;
  text-transform: uppercase;
}
.modal-sub {
  text-align: center;
  color: var(--text-dim);
  font-size: .78rem;
  margin-bottom: 20px;
}

/* Tab bar */
.atab-bar {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--bg);
  border-radius: calc(var(--radius) - 2px);
  padding: 4px;
}

.atab-bar button {
  flex: 1;
  padding: 8px;
  font-size: .85rem;
  background: transparent;
  color: var(--text-dim);
  border-radius: calc(var(--radius) - 4px);
  letter-spacing: .04em;
}
.atab-bar button.atab-on {
  background: var(--accent);
  color: var(--bg);
}

/* Forms */
form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .05em;
}

input {
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  outline: none;
  transition: border-color .15s;
}
input:focus { border-color: var(--accent2); }

form button[type="submit"] {
  margin-top: 4px;
  width: 100%;
}

/* Auth message */
.auth-msg {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: calc(var(--radius) - 2px);
  font-size: .9rem;
  text-align: center;
}
.auth-msg-err { background: rgba(224,80,80,.15); color: var(--danger); }
.auth-msg-ok  { background: rgba(61,224,160,.12); color: var(--accent2); }

/* Recovery modal specifics */
.recovery-card {
  text-align: center;
}
.recovery-card h2 {
  color: var(--accent);
  margin-bottom: 8px;
  font-size: 1.2rem;
}
.recovery-hint {
  color: var(--text-dim);
  font-size: .85rem;
  margin-bottom: 16px;
}
#recovery-code {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 1rem;
  font-family: monospace;
  letter-spacing: .12em;
  word-break: break-all;
  margin-bottom: 20px;
  color: var(--accent2);
}
#btn-recovery-ok { width: 100%; }

/* ── Touch controls ─────────────────────────────────────── */
#touch-controls {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none; /* individual elements opt in via touch-action */
}

.swipe-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.35);
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  pointer-events: none;
}

/* Hide swipe hint after first interaction */
.touch-device.interacted .swipe-hint { opacity: 0; transition: opacity .5s; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 400px) {
  .modal-card { padding: 20px 16px; }
  .go-card    { padding: 24px 20px; }
  #hud-score  { font-size: 1.3rem; }
  #hud-coins  { font-size: 1.35rem; }
  #hud-mult   { font-size: 1rem; }
}

/* Landscape on small phones: shrink modal */
@media (max-height: 500px) {
  .modal-card { padding: 16px 20px; max-height: 95vh; overflow-y: auto; }
  .modal-title { font-size: 1.2rem; margin-bottom: 10px; }
}

/* ── v2: run-time controls, telegraphs, toasts, countdown ─ */
#run-buttons {
  position: fixed;
  top: 10px; right: 12px;
  z-index: 12;
  display: flex;
  gap: 8px;
}
.icon-btn {
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(20,22,29,.65);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  backdrop-filter: blur(3px);
}
.icon-btn:active { transform: scale(.94); }

#hud-coins::before { content: "●"; margin-right: 6px; font-size: .8em; }

#hud-power {
  font-size: .95rem;
  font-weight: 700;
  color: var(--accent2);
  text-shadow: 0 1px 4px rgba(0,0,0,.7);
}

/* score/coin pop */
.bump { animation: bump .25s ease-out; }
@keyframes bump {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.35); }
  100% { transform: scale(1); }
}

/* corner telegraph chevron */
#turn-hint {
  position: fixed;
  top: 22%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 11;
  font-size: 3.2rem;
  color: var(--accent);
  text-shadow: 0 2px 14px rgba(0,0,0,.8);
  pointer-events: none;
  animation: hintPulse 1s ease-in-out infinite;
}
#turn-hint.urgent { color: var(--danger); animation-duration: .4s; }
@keyframes hintPulse {
  0%, 100% { opacity: .55; transform: translateX(-50%) scale(1); }
  50%      { opacity: 1;   transform: translateX(-50%) scale(1.15); }
}

/* milestone / powerup toast */
#toast {
  position: fixed;
  top: 34%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 11;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--accent);
  text-shadow: 0 2px 12px rgba(0,0,0,.85);
  opacity: 0;
  pointer-events: none;
}
#toast.show { animation: toastUp 1.4s ease-out forwards; }
@keyframes toastUp {
  0%   { opacity: 0; transform: translate(-50%, 14px) scale(.8); }
  15%  { opacity: 1; transform: translate(-50%, 0)    scale(1.1); }
  30%  { transform: translate(-50%, 0) scale(1); }
  75%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -18px); }
}

/* 3-2-1-GO countdown */
#countdown {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 7rem;
  font-weight: 900;
  color: var(--accent);
  text-shadow: 0 4px 30px rgba(0,0,0,.9);
  pointer-events: none;
}

/* stumble danger vignette */
#danger-vignette {
  position: fixed;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  box-shadow: inset 0 0 120px 40px rgba(224, 80, 80, 0);
  transition: box-shadow .25s ease-out;
}
#danger-vignette.on {
  box-shadow: inset 0 0 120px 40px rgba(224, 80, 80, .55);
}

/* game-over extras */
.go-reason {
  color: var(--text-dim);
  font-size: .95rem;
  margin: -6px 0 12px;
}
.go-newbest {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .18em;
  margin-bottom: 12px;
  animation: bestGlow 1.2s ease-in-out infinite;
}
@keyframes bestGlow {
  0%, 100% { text-shadow: 0 0 6px rgba(240,192,64,.4); }
  50%      { text-shadow: 0 0 18px rgba(240,192,64,.95); }
}

/* cinematic vignette over the 3D scene (under all UI) */
#vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 45%, transparent 55%, rgba(10, 14, 8, .32) 100%);
}

/* perf: backdrop-filter forced live blur over the canvas every frame */
.icon-btn { backdrop-filter: none; background: rgba(14, 16, 22, .78); }

/* per-round token payout on the game-over card */
.go-earned {
  color: var(--accent2);
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 12px;
}

/* claim box — cash out earned tokens */
.claim-box {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 12px;
}
.claim-box input {
  flex: 1 1 200px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: .85rem;
}
.claim-box button {
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent2);
  color: #08281c;
  font-weight: 700;
  cursor: pointer;
}
.claim-box button:disabled { opacity: .5; cursor: default; }
.claim-msg { flex-basis: 100%; font-size: .8rem; color: var(--accent2); }
.claim-msg.err { color: var(--danger); }

/* ── indie-polish pass: typography ─────────────────────── */
#hud-score {
  font-size: 2.1rem;
  font-weight: 900;
  background: linear-gradient(180deg, #ffe9a3 20%, #f0c040 55%, #c8922a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,.55));
}
#hud-dist { font-size: 1.05rem; letter-spacing: .05em; }

.lobby-brand h1 {
  background: linear-gradient(180deg, #ffe9a3 15%, #f0c040 55%, #b8811f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: .12em;
  filter: drop-shadow(0 2px 8px rgba(240,192,64,.25));
}

#countdown {
  background: linear-gradient(180deg, #fff3c0 15%, #f0c040 60%, #c8922a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 24px rgba(0,0,0,.6));
}

/* HUD $BULLRUN suffix (the coin counter counts $BULLRUN now) */
#hud-coins::before { content: none; }
#hud-coins::after {
  content: " $BULLRUN"; font-size: .48em; opacity: .85; letter-spacing: .06em;
  /* the parent's transparent text-fill inherits but its gradient bg doesn't —
     give the suffix its own gold or it renders invisible */
  -webkit-text-fill-color: #e9c765;
}

/* LAST RUN results card polish */
.go-kicker {
  font-size: .68rem; letter-spacing: .28em; font-weight: 800;
  color: var(--accent2); margin-bottom: 6px;
}
.go-row.go-hero { font-size: 1.15rem; padding: 6px 0; }
.go-row.go-hero span:last-child { color: var(--accent); font-weight: 800; }

/* live coin multiplier badge in the HUD — pill under the centred counter */
#hud-mult {
  font-size: 1.2rem; font-weight: 900; letter-spacing: .04em;
  color: #ffe06a;
  text-shadow: 0 0 12px rgba(255,180,40,.75), 0 1px 3px rgba(0,0,0,.7);
  padding: 1px 14px;
  border-radius: 999px;
  background: rgba(22, 16, 4, 0.5);
  border: 1px solid rgba(255, 214, 90, 0.45);
  box-shadow: 0 0 14px rgba(240, 192, 64, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  animation: multPop .3s ease-out;
}
@keyframes multPop { 0%{transform:scale(1.5)} 100%{transform:scale(1)} }
.go-row #go-mult { color: var(--accent); font-weight: 800; }