@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=IBM+Plex+Mono:wght@300;400;500;700&display=swap');

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

:root {
  --bg:     #0a0a0a;
  --panel:  #111111;
  --border: #222;
  --fg:     #f0f0f0;
  --dim:    #555;
  --green:  #00ff88;
  --red:    #ff3333;
  --yellow: #ffe033;
  --blue:   #33aaff;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: 'IBM Plex Mono', monospace;
  overflow: hidden;
  cursor: default;
}

.shell {
  height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem;
  letter-spacing: 0.12em;
  color: var(--fg);
}

.logo em {
  color: var(--green);
  font-style: normal;
}

.best-badge {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
}

.best-badge span {
  color: var(--green);
  font-size: 0.75rem;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  position: relative;
}

#arena {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 0.72;
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background 0.06s, border-color 0.06s;
  background: var(--panel);
  user-select: none;
  -webkit-user-select: none;
}

#arena::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg, transparent, transparent 39px,
      rgba(255,255,255,0.018) 39px, rgba(255,255,255,0.018) 40px
    ),
    repeating-linear-gradient(
      90deg, transparent, transparent 39px,
      rgba(255,255,255,0.018) 39px, rgba(255,255,255,0.018) 40px
    );
  pointer-events: none;
}

#arena.state-wait   { background: var(--panel); border-color: var(--border); }
#arena.state-ready  { background: #0d1a0d;      border-color: #1a3320; }
#arena.state-go     { background: #001a00;      border-color: var(--green); cursor: crosshair; }
#arena.state-early  { background: #1a0000;      border-color: var(--red);   cursor: not-allowed; }
#arena.state-result { background: var(--panel); border-color: var(--border); cursor: default; }

.arena-label {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.4rem, 10vw, 4.5rem);
  letter-spacing: 0.08em;
  line-height: 1;
  transition: color 0.08s;
  z-index: 1;
}

.arena-sub {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
  z-index: 1;
}

#arena.state-go    .arena-label { color: var(--green); text-shadow: 0 0 40px rgba(0,255,136,0.5); }
#arena.state-early .arena-label { color: var(--red); }
#arena.state-result .arena-label { color: var(--yellow); }

#rounds-row {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  width: 100%;
  max-width: 420px;
}

.round-slot {
  flex: 1;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  color: var(--dim);
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.round-slot::after {
  content: attr(data-n);
  position: absolute;
  top: 3px;
  left: 5px;
  font-size: 0.45rem;
  color: var(--dim);
  letter-spacing: 0.05em;
}

.round-slot.active            { border-color: #444; color: var(--fg); }
.round-slot.done              { border-color: #2a2a2a; color: var(--fg); }
.round-slot.done.fast         { border-color: rgba(0,255,136,0.4);  color: var(--green); }
.round-slot.done.ok           { border-color: rgba(255,224,51,0.3); color: var(--yellow); }
.round-slot.done.slow         { border-color: rgba(255,51,51,0.3);  color: var(--red); }

#stats-bar {
  display: flex;
  gap: 0;
  width: 100%;
  max-width: 420px;
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.stat-cell {
  flex: 1;
  padding: 10px 8px;
  border-right: 1px solid var(--border);
  text-align: center;
}

.stat-cell:last-child { border-right: none; }

.stat-val {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  color: var(--fg);
}

.stat-lbl {
  font-size: 0.48rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 2px;
}

footer {
  padding: 14px 0 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kbd {
  display: inline-block;
  padding: 2px 7px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 3px;
  font-size: 0.6rem;
  color: var(--dim);
}

#reset-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--dim);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 7px 16px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}

#reset-btn:hover {
  border-color: var(--fg);
  color: var(--fg);
}

#results-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.97);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  z-index: 10;
  padding: 28px;
  border-radius: 4px;
}

#results-overlay.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.final-time {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(3rem, 15vw, 6.5rem);
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--green);
  text-shadow: 0 0 60px rgba(0,255,136,0.3);
}

.final-unit {
  font-size: 0.7rem;
  color: var(--dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: -8px;
}

.percentile-bar-wrap {
  width: 100%;
  background: #1a1a1a;
  height: 6px;
  border-radius: 99px;
  overflow: hidden;
}

.percentile-bar {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--red), var(--yellow), var(--green));
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
  width: 0%;
}

.percentile-label {
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  width: 100%;
  display: flex;
  justify-content: space-between;
}

.percentile-label span { color: var(--fg); }

.verdict {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  text-align: center;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  width: 100%;
}

.rg-cell {
  background: #161616;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 8px;
  text-align: center;
}

.rg-val {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.rg-lbl {
  font-size: 0.48rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 2px;
}

.mini-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.bar-row { width: 100%; }

.mini-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.55rem;
  color: var(--dim);
  margin-bottom: 4px;
}

.mini-bar-track {
  height: 5px;
  background: #1a1a1a;
  border-radius: 99px;
  overflow: hidden;
}

.mini-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.8s ease;
}

.action-row {
  display: flex;
  gap: 10px;
  width: 100%;
}

.act-btn {
  flex: 1;
  padding: 13px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}

.act-btn.primary {
  background: var(--green);
  color: #000;
  border: none;
  font-weight: 700;
}

.act-btn.primary:hover { background: #00ffaa; }

.act-btn.secondary {
  background: none;
  border: 1px solid var(--border);
  color: var(--dim);
}

.act-btn.secondary:hover {
  border-color: var(--fg);
  color: var(--fg);
}