/* Estilos principais e layout (legível) */
:root{
  --bg:#0f1226;
  --surface:#15193a;
  --surface-2:#1b2050;
  --text:#e7e9ff;
  --muted:#aab0d6;
  --primary:#6a7dff;
  --accent:#22d1ee;
  --success:#2dd36f;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
}

.hidden { display: none !important; }
[hidden] { display: none !important; }

*{ box-sizing:border-box; }
html, body { height: 100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, 'Helvetica Neue', Arial, 'Apple Color Emoji','Segoe UI Emoji';
  background: radial-gradient(1200px 800px at 70% -10%, #1c2251 0%, #0f1226 60%);
  color:var(--text);
  line-height:1.4;
}

.screen{
  position: relative;
  min-height: 100dvh;
  width: 100%;
  display: grid;
  place-items: center;
  padding: clamp(16px, 3vw, 32px);
}

.start .bg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .25;
  pointer-events: none;
  user-select: none;
}
.start .start-content{
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, rgba(21,25,58,.75), rgba(15,18,38,.75));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 36px);
  width: min(720px, 92vw);
  text-align: center;
  backdrop-filter: blur(6px);
}
.start h1{
  margin: 0 0 8px;
  font-weight: 800;
  letter-spacing: .5px;
  font-size: clamp(28px, 4.8vw, 44px);
}
.start p{ color: var(--muted); margin-top: 0; }
.start .tip{
  margin-top: 14px;
  font-size: .95rem;
  opacity: .9;
}
code{
  background: rgba(255,255,255,.08);
  padding: .15em .35em;
  border-radius: 6px;
  color: var(--text);
}

/* Botões */
.btn{
  appearance: none;
  border: 1px solid transparent;
  background: var(--surface-2);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .08s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn:active{ transform: translateY(0); }
.btn.primary{
  background: linear-gradient(135deg, var(--primary), #9ea8ff);
  color: #0b0e23;
  box-shadow: 0 8px 24px rgba(106,125,255,.35);
}
.btn.subtle{
  background: transparent;
  border-color: rgba(255,255,255,.12);
}
.actions{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* HUD */
.hud{
  position: fixed;
  inset: auto 16px 16px 16px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  pointer-events: none;
  z-index: 5;
}
.timer{
  font-variant-numeric: tabular-nums;
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.1);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  letter-spacing: .5px;
  pointer-events: auto;
}
#restartBtn{ pointer-events: auto; }

/* Grid e cartas */
.grid{
  width: min(1100px, 94vw);
  margin: 0 auto;
  display: grid;
  gap: clamp(10px, 2.2vw, 18px);
  grid-template-columns: repeat(auto-fit, minmax(clamp(68px, 20vw, 140px), 1fr));
  align-content: center;
  justify-content: center;
  padding: clamp(12px, 3vw, 28px);
}

.card{
  position: relative;
  aspect-ratio: 1/1;
  cursor: pointer;
  border: 0;
  background: transparent;
  perspective: 1000px;
  outline: none;
}
.card:focus-visible{
  box-shadow: 0 0 0 3px var(--accent);
  border-radius: 14px;
}
.card[aria-disabled="true"]{ cursor: default; }

.card-inner{
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 360ms cubic-bezier(.2,.8,.25,1);
  will-change: transform;
}
.card.is-flipped .card-inner{ transform: rotateY(180deg); }

.card-face{
  position: absolute;
  inset: 0;
  border-radius: 14px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: grid;
  place-items: center;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}

/* Frente (imagem do par) */
.card-face.front{
  background: radial-gradient(circle at 30% 20%, #222b6b, #161a3c);
  border: 1px solid rgba(255,255,255,.08);
  transform: rotateY(180deg);
}
.card-face.front img{
  width: 80%;
  height: 80%;
  object-fit: contain;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,.35));
  /* Visibilidade controlada pelo estado do card */
  opacity: 0;
  transition: opacity .18s ease;
}
.card.is-flipped .card-face.front img{
  opacity: 1;
}

/* Verso (capa padrão controlada por HTML via data-back) */
.card-face.back{
  background: linear-gradient(180deg, #121844, #0e1336);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow);
}
.card-face.back img.cover{
  width: 72%;
  height: 72%;
  object-fit: contain;
  opacity: 1;
  transition: opacity .18s ease;
}
/* Oculta a capa quando a carta estiver virada para a frente */
.card.is-flipped .card-face.back img.cover{
  opacity: 0;
}

.card.matched .front{
  outline: 2px solid rgba(45, 211, 111, .9);
  box-shadow: 0 0 0 3px rgba(45, 211, 111, .35) inset;
}

/* Win screen */
.win{
  display: grid;
  place-items: center;
}
.win-card{
  background: linear-gradient(180deg, rgba(21,25,58,.85), rgba(15,18,38,.85));
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: clamp(20px, 4vw, 32px);
  text-align: center;
  width: min(560px, 92vw);
  box-shadow: var(--shadow);
}
.win-card h2{ margin-top: 0; }
.final-time{
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .5px;
}

@media (prefers-reduced-motion: reduce){
  .card-inner{ transition-duration: 0ms; }
  .btn { transition: none; }
}

/* --- Formulário: estilos completos --- */
.form .form-card {
  font-size: 1rem;
  /* border-radius: var(--radius); */
  width: min(560px, 92vw);
  text-align: left;
  /* padding: clamp(20px, 4vw, 32px); */
  /* box-shadow: var(--shadow); */
}
.form .form-card.memoria-hero__lead {
  margin-top: 10vh;
  margin-bottom: 1.25rem;
}
.form .form-card h2 {
  font-size: 1rem;
  font-weight: 800;
  text-align: center;
  margin: 0 0 1rem;
}
.form .muted {
  color: var(--muted);
  margin: 0 0 18px;
}
.form .field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}
.form label {
  font-size: 1rem;
  font-weight: 600;
}
.form input[type="text"],
.form input[type="email"] {
  appearance: none;
  width: 100%;
  padding: 12px 14px;
  background: rgba(0,0,0,.28);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  color: var(--text);
}
.form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.form .error {
  color: #d20202;
  min-height: 1em;
}
.form .feedback {
  margin-top: 12px;
  min-height: 1.2em;
}

.form .form-card .memoria-hero__button {
  font-size: clamp(14px, 2.4vw, 18px);
  display: block;
  margin: 0 auto;
}