/*
  Click Speed Battle — style moderne, accessible et responsive
  - Typo: Inter
  - Thème sombre par défaut, variables CSS pour facile customisation
  - Etats dynamiques via [data-state]: idle | wait | go | false-start
*/

/* Reset léger / normalisation */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; }

/* Variables de thème */
:root {
  --bg: #0b0f14;            /* fond */
  --surface: #121923;       /* cartes */
  --surface-2: #0f141c;     /* barres, contraste léger */
  --text: #e6ecf2;          /* texte principal */
  --muted: #9fb0c3;         /* texte secondaire */
  --primary: #4cc9f0;       /* accent principal */
  --primary-600: #34b6e0;
  --primary-700: #279fc5;
  --success: #22c55e;       /* go */
  --warning: #f59e0b;       /* wait */
  --danger: #ef4444;        /* false start */
  --border: rgba(255,255,255,.08);
  --shadow: 0 10px 30px rgba(0,0,0,.35), 0 2px 10px rgba(0,0,0,.2);
  --radius: 14px;
  --radius-sm: 10px;
  --gap: 16px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fc;
    --surface: #ffffff;
    --surface-2: #f0f4f9;
    --text: #101827;
    --muted: #5b6b7c;
    --border: rgba(0,0,0,.08);
  }
}

/* Base */
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(76,201,240,.12), transparent),
              radial-gradient(1000px 600px at 120% 20%, rgba(34,197,94,.10), transparent),
              var(--bg);
  min-height: 100dvh;
  line-height: 1.6;
  letter-spacing: 0.2px;
}

.container {
  width: min(100%, 1000px);
  margin: 0 auto;
  padding: 32px 20px 40px;
  display: grid;
  gap: calc(var(--gap) * 1.5);
}

.header {
  display: grid;
  justify-items: start;
  gap: 8px;
}
.title {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.02em;
  font-weight: 800;
  /* Pas de dégradé dans le texte */
  color: var(--text);
}
.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: clamp(14px, 2vw, 16px);
}

/* Cartes */
.card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.game { display: grid; gap: 20px; }
.leaderboard { display: grid; gap: 14px; }

/* Contrôles: Start + Stop */
.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

/* Bouton secondaire (Stop) */
.btn.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn.btn-secondary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--surface-2) 60%, transparent);
}
.btn.btn-secondary:active:not(:disabled) {
  transform: translateY(1px);
}

.leaderboard h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

/* Formulaires et contrôles */
.controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
}

.label { font-size: 13px; color: var(--muted); }

.input {
  grid-column: 1 / -1;
  appearance: none;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.input:focus {
  border-color: color-mix(in srgb, var(--primary) 60%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 20%, transparent);
}

.btn {
  appearance: none;
  border: 0;
  background: linear-gradient(180deg, var(--primary), var(--primary-700));
  color: #0b0f14;
  font-weight: 800;
  letter-spacing: .3px;
  padding: 12px 18px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .06s ease, filter .2s ease, background .2s ease, opacity .2s ease;
  box-shadow: 0 8px 20px rgba(76,201,240,.25);
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:active { transform: translateY(0); filter: brightness(.98); }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* Zone de statut / score */
.status {
  display: grid;
  place-items: center;
  min-height: clamp(140px, 24vw, 230px);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), transparent);
  position: relative;
  overflow: hidden;
}

.score {
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 6vw, 56px);
  font-weight: 800;
  letter-spacing: .5px;
}

.hint { margin: 0; color: var(--muted); font-size: 13px; }

/* Etats du jeu visuels via [data-state] sur body */
/* Attente du GO */
body[data-state="wait"] .status { border-style: solid; border-color: color-mix(in srgb, var(--warning) 50%, var(--border)); }
body[data-state="wait"] .btn { background: linear-gradient(180deg, var(--warning), #d18a0b); box-shadow: 0 8px 20px rgba(245,158,11,.25); }
body[data-state="wait"] .score { color: var(--warning); }

/* GO */
body[data-state="go"] .status { border-color: color-mix(in srgb, var(--success) 55%, var(--border)); }
body[data-state="go"] .btn { background: linear-gradient(180deg, var(--success), #1a9c4a); box-shadow: 0 8px 20px rgba(34,197,94,.25); color: #03140a; }
body[data-state="go"] .score { color: var(--success); animation: pop .6s ease both; }

/* Faux départ */
body[data-state="false-start"] .status { border-color: color-mix(in srgb, var(--danger) 55%, var(--border)); }
body[data-state="false-start"] .btn { background: linear-gradient(180deg, var(--danger), #c03434); box-shadow: 0 8px 20px rgba(239,68,68,.25); color: #140303; }
body[data-state="false-start"] .score { color: var(--danger); }

@keyframes pop {
  0% { transform: scale(.96); filter: saturate(1.1); }
  60% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

/* Liste classement */
#leaderboard {
  background: linear-gradient(180deg, var(--surface-2), transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
#leaderboard h3 { margin: 6px 0 10px; font-size: 15px; color: var(--muted); }
#leaderboard ol { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
#leaderboard li { padding: 2px 0; }

/* Footer */
.footer {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 13px;
}

/* Accessibilité */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* Réduction d’animations si demandé */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* Responsive - ajustements */
@media (min-width: 720px) {
  .controls {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
  .input { grid-column: 1 / span 1; }
  .btn { grid-column: 2 / span 1; }
}

/* Version mobile */
@media (max-width: 480px) {
  .container { padding: 20px 14px 28px; gap: calc(var(--gap) * 1.2); }

  .title { font-size: clamp(24px, 7vw, 32px); }
  .subtitle { font-size: clamp(13px, 3.5vw, 15px); }

  .controls { grid-template-columns: 1fr; gap: 12px; }
  .input { grid-column: 1 / -1; padding: 14px 16px; }
  /* Bouton plus grand et plus confortable au toucher (mobile) */
  .btn {
    width: 100%;
    padding: 18px 20px;
    min-height: 56px;           /* cible tactile ≥ 56px */
    font-size: 18px;            /* texte plus lisible */
    border-radius: 14px;        /* un peu plus doux quand plus grand */
  }

  .status { min-height: 170px; }
  .score { font-size: clamp(26px, 10vw, 44px); }

  #leaderboard { padding: 10px 12px; }
  #leaderboard h3 { font-size: 14px; }
}

/* Très petits téléphones (ex: 320–360px) */
@media (max-width: 360px) {
  .btn {
    font-size: 17px;
    min-height: 54px;
    padding: 16px 18px;
  }
}