/* ============================================================
   NEON GRID DUEL — folha de estilos autoral
   Paleta: jogador ciano elétrico, IA laranja energético,
   neutros em azul-escuro/grafite. Sem referências visuais a
   franquias de terceiros.
   ============================================================ */

:root {
  --bg: #03040c;
  --ink: #eaf6ff;
  --muted: #8fa8c9;
  --line: rgba(255, 255, 255, .16);
  --panel: rgba(6, 10, 24, .86);
  --accent: #22e0ff;   /* jogador */
  --foe: #ff8a2a;      /* IA */
  --green: #58f0a8;
  --red: #ff4d5e;
  --shadow: 0 18px 70px rgba(0, 0, 0, .55);
}

* { box-sizing: border-box; }

.hidden { display: none !important; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: "Trebuchet MS", system-ui, sans-serif;
  background:
    radial-gradient(circle at 16% 10%, rgba(34, 224, 255, .16), transparent 22rem),
    radial-gradient(circle at 84% 16%, rgba(255, 138, 42, .12), transparent 24rem),
    linear-gradient(160deg, #03040c, #071026 46%, #0a1530);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

/* grade tecnológica sutil no fundo da página */
body::before {
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
}

body::after {
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,.045), rgba(255,255,255,.045) 1px, transparent 1px, transparent 4px);
  mix-blend-mode: soft-light;
  opacity: .32;
}

/* ---------- link de volta ao portal ---------- */
.home-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 20;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .45);
  padding: .55rem .75rem;
  border-radius: 6px;
  backdrop-filter: blur(10px);
}

.home-link:hover,
.home-link:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 18px rgba(34, 224, 255, .26);
  outline: none;
}

/* ---------- layout gabinete + painel ---------- */
.shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100vw - 2rem));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 860px) minmax(280px, 320px);
  gap: 1rem;
  align-items: center;
  padding: 4.5rem 0 5rem;
}

.cabinet,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.cabinet { padding: .8rem; }

.marquee {
  min-height: 3.2rem;
  margin-bottom: .8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem .9rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(34,224,255,.14), rgba(255,138,42,.1));
  text-transform: uppercase;
}

.marquee span {
  color: var(--accent);
  font-size: clamp(1.1rem, 3.2vw, 2.2rem);
  font-weight: 900;
  letter-spacing: .1em;
  text-shadow: 0 0 14px rgba(34, 224, 255, .5), 0 0 28px rgba(255, 138, 42, .2);
}

.marquee small {
  color: var(--foe);
  font-weight: 800;
  letter-spacing: .08em;
  text-align: right;
}

.screen-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
}

#board {
  display: block;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(255,255,255,.28);
  border-radius: 6px;
  background: #000;
  box-shadow: inset 0 0 34px rgba(0,0,0,.78), 0 0 34px rgba(34,224,255,.14);
  touch-action: none;
}

/* ---------- overlay (menu, resultado, pausa) ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, .58);
}

.overlay.hidden { display: none; }

.overlay-panel {
  width: min(92%, 400px);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  background: rgba(4, 8, 20, .94);
  padding: 1.15rem;
  text-align: center;
  box-shadow: 0 18px 55px rgba(0,0,0,.56);
}

.overline {
  margin: 0 0 .35rem;
  color: var(--foe);
  text-transform: uppercase;
  font-size: .75rem;
  letter-spacing: .14em;
}

.overlay-panel h1 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(1.5rem, 7vw, 2.4rem);
  letter-spacing: .06em;
  text-shadow: 0 0 18px rgba(34, 224, 255, .42);
}

.overlay-panel h1.record-pulse {
  animation: recordPulse 1s ease-in-out infinite alternate;
}

@keyframes recordPulse {
  from { text-shadow: 0 0 12px rgba(34,224,255,.4); }
  to   { text-shadow: 0 0 26px rgba(88,240,168,.9), 0 0 40px rgba(34,224,255,.6); }
}

.overlay-panel p {
  color: var(--muted);
  line-height: 1.45;
}

.overlay-stats {
  list-style: none;
  margin: .7rem 0;
  padding: .6rem .8rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.04);
  text-align: left;
}

.overlay-stats li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: .92rem;
  padding: .18rem 0;
}

.overlay-stats li b { color: var(--ink); }

/* ---------- seletor de dificuldade ---------- */
.difficulty-pick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .4rem;
  margin: .85rem 0 .2rem;
}

.difficulty-pick.hidden { display: none; }

/* especificidade extra (.overlay-panel) para vencer a regra generica
   .overlay-panel button, que senao coloriria os botoes nao selecionados */
.overlay-panel .diff-btn {
  display: flex;
  flex-direction: column;
  gap: .1rem;
  align-items: center;
  padding: .55rem .3rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, .05);
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.overlay-panel .diff-btn small {
  color: var(--muted);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.overlay-panel .diff-btn:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }

.overlay-panel .diff-btn.active {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(34,224,255,.28), rgba(255,138,42,.16));
  box-shadow: 0 0 16px rgba(34, 224, 255, .3);
}

.overlay-panel .diff-btn.active small { color: var(--ink); }

.overlay-actions {
  display: grid;
  gap: .5rem;
  margin-top: .85rem;
}

.overlay-panel button,
.panel-buttons button {
  border: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--accent), var(--foe));
  color: #041018;
  cursor: pointer;
  font-weight: 900;
  padding: .8rem 1rem;
  text-transform: uppercase;
}

.overlay-panel button.secondary {
  background: rgba(255,255,255,.09);
  color: var(--ink);
  border: 1px solid var(--line);
}

.overlay-panel button:hover,
.panel-buttons button:hover,
.touch-controls button:hover {
  filter: brightness(1.08);
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* entrada de iniciais (placar universal do portal) */
.score-entry {
  display: grid;
  gap: .55rem;
  margin: .85rem 0 0;
}

.score-entry.hidden { display: none; }

.score-entry label { color: var(--ink); font-weight: 800; }

.score-entry input {
  width: 6rem;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #081226;
  color: var(--ink);
  padding: .65rem;
  text-align: center;
  text-transform: uppercase;
  font: 900 1.2rem "Courier New", monospace;
}

/* ---------- painel lateral ---------- */
.panel { padding: 1rem; }

.meter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .6rem;
}

.meter,
.scores-box,
.controls {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.05);
}

.meter {
  min-height: 64px;
  padding: .6rem;
}

/* medidor que ocupa a linha inteira (dificuldade) */
.meter-wide { grid-column: 1 / -1; }

.meter span,
.scores-box h2,
.controls h2 {
  display: block;
  margin: 0 0 .3rem;
  color: var(--muted);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.meter strong {
  color: var(--ink);
  font-size: clamp(1.05rem, 3vw, 1.4rem);
}

.scores-box,
.controls {
  margin-top: .75rem;
  padding: .85rem;
}

.score-list {
  margin: 0;
  padding-left: 1.4rem;
  display: grid;
  gap: .25rem;
}

.score-list li {
  color: var(--ink);
  font-family: "Courier New", monospace;
}

.score-list span { color: var(--accent); }

.controls p {
  margin: .34rem 0;
  color: var(--muted);
  font-size: .92rem;
}

.controls b { color: var(--ink); }

.panel-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .5rem;
  margin-top: .75rem;
}

.panel-buttons button {
  padding: .6rem .5rem;
  font-size: .8rem;
}

/* ---------- D-pad touch (padrão arcade) ----------
        ↑
     ←  ↓  →                                          */
.touch-controls {
  position: fixed;
  left: 50%;
  bottom: calc(.75rem + env(safe-area-inset-bottom, 0px));
  z-index: 15;
  width: min(72vw, 300px);
  transform: translateX(-50%);
  display: none;
  grid-template-areas:
    ". up ."
    "left down right";
  grid-template-columns: repeat(3, 1fr);
  gap: .45rem;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.touch-controls .dpad-up    { grid-area: up; }
.touch-controls .dpad-left  { grid-area: left; }
.touch-controls .dpad-down  { grid-area: down; }
.touch-controls .dpad-right { grid-area: right; }

.touch-controls button {
  min-height: 58px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(0, 0, 0, .66);
  color: var(--ink);
  cursor: pointer;
  font-size: 1.4rem;
  font-weight: 900;
  backdrop-filter: blur(10px);
  touch-action: none;
}

.touch-controls button:active {
  background: linear-gradient(90deg, var(--accent), var(--foe));
  color: #041018;
  transform: scale(.96);
}

/* ---------- alto contraste ---------- */
body.hc {
  --bg: #000;
  --ink: #fff;
  --muted: #d0d0d0;
  --line: rgba(255,255,255,.55);
  --panel: rgba(0,0,0,.92);
  background: #000;
}

body.hc::before,
body.hc::after { display: none; }

body.hc #board { border-color: #fff; box-shadow: none; }

/* ---------- movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ---------- responsividade ---------- */
@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 4rem;
  }

  .panel { margin-bottom: 7.5rem; }

  .touch-controls { display: grid; }
}

@media (max-width: 560px) {
  .home-link {
    position: static;
    display: inline-block;
    margin: .75rem 1rem 0;
  }

  .shell {
    width: min(100vw - 1rem, 1180px);
    padding-top: .75rem;
  }

  .marquee {
    align-items: flex-start;
    flex-direction: column;
    gap: .25rem;
  }

  .panel-buttons { grid-template-columns: repeat(2, 1fr); }
}