/* ===== RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
 
/* ===== BODY ===== */
body {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: 'Share Tech Mono', 'Courier New', monospace;
  color: #00e5cc;
  padding: 20px;
}
 
/* ===== CONTENEDOR PRINCIPAL ===== */
.contenedor {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 24px 16px;
  border: 1px solid #00e5cc44;
  border-radius: 12px;
  box-shadow:
    0 0 30px #00e5cc22,
    0 0 60px #00e5cc11;
}
 
/* ===== TÍTULOS ===== */
h1 {
  font-size: 2.2rem;
  color: #00e5cc;
  letter-spacing: 6px;
  text-transform: uppercase;
  text-shadow:
    0 0 10px #00e5cc,
    0 0 25px #00e5cc88;
  text-align: center;
}
 
h2 {
  font-size: 1rem;
  color: #00e5cc99;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-align: center;
}
 
/* ===== CUADRO FIJO ===== */
.cuadro-fijo {
  width: 100%;
  border: 1px solid #00e5cc55;
  border-radius: 8px;
  padding: 16px 20px;
  background: #00e5cc08;
  box-shadow: 0 0 12px #00e5cc22;
  text-align: left;
}
 
/* ===== INPUT NOMBRE ===== */
input[type="text"] {
  width: 100%;
  margin-top: 8px;
  padding: 10px 14px;
  background: #000;
  border: 1px solid #00e5cc66;
  border-radius: 6px;
  color: #00e5cc;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.95rem;
  letter-spacing: 1px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
 
input[type="text"]:focus {
  border-color: #00e5cc;
  box-shadow: 0 0 10px #00e5cc55;
}
 
input[type="text"]::placeholder {
  color: #00e5cc44;
}
 
/* ===== MENSAJE ERROR ===== */
.mensaje-error {
  color: #ff4466;
  font-size: 0.8rem;
  margin-top: 6px;
  min-height: 16px;
  text-shadow: 0 0 8px #ff446688;
}
 
/* ===== ESTADO DEL JUEGO ===== */
.estado-juego {
  font-size: 0.9rem;
  color: #00e5ccbb;
  text-align: center;
  letter-spacing: 1px;
  min-height: 20px;
  text-shadow: 0 0 8px #00e5cc55;
  padding: 0 8px;
}
 
/* ===== TABLERO TRIQUI ===== */
.tablero {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 300px;
}
 
.celda {
  aspect-ratio: 1;
  border: 1px solid #00e5cc55;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  cursor: pointer;
  background: #00e5cc08;
  transition: background 0.2s, box-shadow 0.2s;
  user-select: none;
  color: #00e5cc;
  text-shadow:
    0 0 10px #00e5cc,
    0 0 20px #00e5cc88;
}
 
.celda:hover:not(.ocupada) {
  background: #00e5cc15;
  box-shadow: 0 0 14px #00e5cc44;
}
 
.celda.ocupada {
  cursor: not-allowed;
}
 
.celda.ganadora {
  background: #00e5cc25;
  box-shadow: 0 0 20px #00e5ccaa;
  border-color: #00e5cc;
}
 
.celda.maquina {
  color: #ff4466;
  text-shadow:
    0 0 10px #ff4466,
    0 0 20px #ff446688;
}
 
/* ===== CRONÓMETRO ===== */
.cronometro-box {
  display: flex;
  align-items: center;
  justify-content: center;
}
 
.clock-ring {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px solid #00e5cc;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 0 20px #00e5cc55,
    0 0 40px #00e5cc22,
    inset 0 0 20px #00e5cc22;
}
 
.clock-time {
  font-size: 2.2rem;
  color: #00e5cc;
  letter-spacing: 4px;
  text-shadow:
    0 0 10px #00e5cc,
    0 0 20px #00e5cc88,
    0 0 40px #00e5cc44;
  user-select: none;
}
 
/* ===== BOTONES ===== */
.botones {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
 
button {
  padding: 10px 28px;
  background: transparent;
  border: 1px solid #00e5cc;
  border-radius: 6px;
  color: #00e5cc;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.95rem;
  letter-spacing: 2px;
  cursor: pointer;
  text-transform: uppercase;
  transition: background 0.2s, box-shadow 0.2s;
}
 
button:hover {
  background: #00e5cc15;
  box-shadow: 0 0 16px #00e5cc55;
}
 
/* ===== MARCADOR ===== */
.marcador-box {
  text-align: center;
  font-size: 0.9rem;
  letter-spacing: 1px;
}
 
/* ===== MENSAJE GUARDADO ===== */
.mensaje-guardado {
  color: #00e5cc;
  font-size: 0.85rem;
  text-align: center;
  letter-spacing: 1px;
  min-height: 18px;
  text-shadow: 0 0 8px #00e5cc88;
}
 
/* ===== HR ===== */
hr {
  width: 100%;
  border: none;
  border-top: 1px solid #00e5cc33;
}
 
/* ===== RESPONSIVE MÓVIL ===== */
@media (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
    letter-spacing: 4px;
  }
 
  .clock-ring {
    width: 160px;
    height: 160px;
  }
 
  .clock-time {
    font-size: 1.7rem;
  }
 
  .celda {
    font-size: 1.8rem;
  }
 
  .tablero {
    max-width: 260px;
  }
 
  .contenedor {
    padding: 16px 10px;
    gap: 14px;
  }
 
  button {
    padding: 9px 18px;
    font-size: 0.85rem;
  }
}